CN111763043A

CN111763043A - Mix proportion design method of regenerated all-light concrete

Info

Publication number: CN111763043A
Application number: CN201910260852.7A
Authority: CN
Inventors: 吕杉; 王亚彬; 巫仕斌
Original assignee: Sichuan Gongyuming Graphic Design Co ltd
Current assignee: Sichuan Gongyuming Graphic Design Co ltd
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-10-13

Abstract

The invention provides a mix proportion design method of regenerated all-light concrete, belonging to the field of building materials. The design method comprises the following steps: (1) determining the water-gel ratio and the single-component initial dosage of each raw material in the paste body; (2) screening the regenerated light material, and determining the primary clear distance of the regenerated light material according to the oversize masses with different particle sizes; (3) determining the single-component usage of the regenerated light material and the clean slurry body according to the primary clear distance; converting the initial quantitative amount of each raw material into an initial reference mixing ratio; (4) performing trial mixing optimization on the preliminary reference mixing ratio to obtain a reference mixing ratio; (5) detecting raw material indexes for production adjustment, and converting the reference mixing ratio into a production mixing ratio. The method realizes the reasonable use of the regenerated powder and the regenerated light material in the regenerated all-light concrete, not only meets the internal stress balance, but also considers the workability and the cost performance.

Description

Mix proportion design method of regenerated all-light concrete

Technical Field

The invention relates to the technical field of building materials, in particular to a mix proportion design method of regenerated all-light concrete.

Background

With the overall development of the economy of various industries, natural resources are more and more in short supply, and various wastes are more and more generated. The various wastes are stacked in a concentrated manner, so that the space is occupied, and the environment is seriously polluted, so that the problem that people generally pay attention to how to recycle the various wastes is solved.

Because various wastes have various types and different characteristics, no reasonable configuration method is used in the field of construction, so that the consumption of the wastes in the field of construction is small, the application range is too small or the comprehensive recovery utilization rate is not high.

At present, the configuration method of various wastes in the recycling process mainly has the following technical bottlenecks: the method has the advantages that the recycled powder has different characteristics, and when the recycled powder is recycled, various solid inorganic wastes are tested singly or mutually in a combined mode for research, so that the method is long in time consumption and very high in cost; secondly, commercial agricultural light garbage is wide, and the discreteness of the crushed light garbage is large, so that the integral strength and performance of concrete are easily reduced greatly; thirdly, the regenerated powder and the regenerated light material are combined for use, the technical control is more difficult, the variety of the raw material garbage is more, the difference of regions is large, and the recovery amount of single garbage is limited, so how to effectively combine and control the regenerated powder and the regenerated light material to change waste into valuable needs to be scientifically and reasonably solved.

Disclosure of Invention

The invention aims to provide a mix proportion design method of regenerated all-light concrete, and the regenerated all-light concrete prepared by the design method can be widely applied to the field of building materials by various wastes.

In order to achieve the above object, the present invention provides the following technical solutions:

the invention provides a mix proportion design method of regenerated all-light concrete, which comprises the following steps:

(1) determining the water-glue ratio, and determining the single-component initial dosage of each raw material in the paste body according to the water-glue ratio; preparing a net slurry body according to the single-component initial fixed dosage of each raw material, and measuring the density of the net slurry body and the gas content of the net slurry body; the raw materials in the clean slurry body comprise cement, water and regeneration powder;

(2) screening the regenerated light material to obtain the oversize quality with different particle sizes;

carrying out volume equivalent transformation on the regenerated light material particles with the screening particle size of 0.15-5 mm, and obtaining the total average particle size of the regenerated light material according to the oversize mass with different particle sizes;

determining the primary clear distance of the regenerated light material according to the overall average particle size of the regenerated light material, the density and the gas content of the clean slurry body in the step (1);

(3) determining the unilateral volume and the unilateral dosage of the net slurry body and the regenerated light material according to the primary clear distance of the regenerated light material in the step (2);

converting the initial quantitative amount of each raw material in the clean slurry body in the step (1) into the amount of each raw material in the initial standard mixing ratio to obtain the initial standard mixing ratio;

(4) adjusting the clear distance of the regenerated light material, and obtaining a corresponding mixing proportion after the clear distance is adjusted and a sample of the corresponding mixing proportion according to the determination method of the preliminary reference mixing proportion in the step (3);

detecting the workability of the sample, and taking the optimal cost performance as a reference mix proportion;

(5) and (3) detecting indexes of the raw materials for production adjustment, converting the reference mixing ratio into a production mixing ratio by detecting the indexes, and performing trial mixing optimization of the production mixing ratio by taking the water-glue ratio in the step (1) as a reference to obtain a final production mixing ratio.

Preferably, the reclaimed powder in the step (1) is prepared from building solid inorganic garbage and/or industrial solid inorganic garbage; the building solid inorganic garbage comprises one or more of waste bricks, waste ceramic tiles, waste concrete blocks, waste mortar, stone powder and sandstone waste, and the industrial solid inorganic garbage comprises one or more of metallurgical waste residues, mining waste residues, fuel waste residues and chemical waste residues; the particle size of the regenerated powder is less than 0.15 mm.

Preferably, the mud content of the reclaimed powder is less than 5 wt.%.

Preferably, the method for determining the water-to-glue ratio in the step (1) comprises the following steps:

(a) determining the preparation strength of the regenerated all-light concrete according to the formula 1:

R_i＝R_k× mu/(0.9577-1.129 k) formula 1

In the formula 1, R_iPreparing strength (MPa) for the regenerated all-light concrete; r_kThe strength (MPa) of the regenerated all-light concrete product is shown, and k is the voidage (%) of the regenerated all-light concrete product; im is correction coefficient: the production control level is determined, wherein the excellent production control is 1.1, generally 1.15, and the worse is 1.2;

(b) determining the theoretical single-formula standard dosage of a cementing material according to the formula 2 and the formula 3, wherein the cementing material is a mixture of cement and regenerated powder;

qc to 1000(Ri- β)/(α -fce) formula 2

fce ═ rc

In the formulas 2 and 3, Qc-is the theoretical single-formula standard dosage (Kg) of the cementing material; alpha is a characteristic coefficient of 3.03; taking a beta characteristic coefficient of-15.09; fce is the measured strength (MPa) of the cement; fcek is cement strength grade (MPa); rc is a cement margin coefficient;

taking the maximum value of the theoretical single-prescription dosage and 200Kg of the cementing material as the single-prescription dosage of the cementing material;

(c) determining the unilateral specification dosage of water in the clean slurry body according to formula 4:

qs + (e-d) x (c-a)/(b-a) formula 4;

in formula 4, Qs is the single standard amount (Kg) of water in the pure slurry; a is the lower limit value (mm) of the slurry preparation consistency range required by construction, b is the upper limit value (mm) of the slurry preparation consistency range required by construction, c is the consistency set value (mm) required to be achieved, d is the lower limit value (Kg) of water consumption determined according to masonry mortar mix proportion design rule JGJT98-2010, and e is the upper limit value (Kg) of water consumption determined according to masonry mortar mix proportion design rule JGJT 98-2010;

(d) determining the water-cement ratio according to the application of the regenerated all-light concrete: when the regenerated all-light concrete is used for producing a leveling layer or a heat insulation material, determining the water-cement ratio by adopting a formula 5 and a formula 7; when the regenerated all-light concrete is used for producing the batten for the building partition wall or the component for the building partition wall, the water-cement ratio is determined by adopting the formulas 6 and 7:

(Qs/Qc) - [ (Qs/Qc- (Qs/Qc) × η ] } 0.81, 5

W ═ 0.69- [ (Qs/Qc) × (Qs/Qc) - (Qs/Qc) × η ] × 0.5589 formula 6

Eta ═ 1-F). times.lambda.formula 7

In the formulas 5, 6 and 7, W is the water-to-glue ratio; qs is the single specification amount (Kg) of water in the pure slurry; qc is the single specification dosage (Kg) of the cementing material; eta is the corrected value of the water-to-gel ratio of the regenerated powder; f is the determined mixing amount (%) of the reclaimed powder, and lambda is the activity index (%) of the determined mixing amount (%) of the reclaimed powder measured according to the detection method of the mineral admixture application technical specification GB/T51003-2014 appendix B.

Preferably, when the raw materials of the clean slurry body do not contain the additive, the single initial dosage of each raw material in the clean slurry body in the step (1) is determined by the following method:

taking the unilateral standard dosage of the cementing material obtained in the step (b) as the unilateral initial dosage of the cementing material in the paste body;

determining the single-component initial dosage of water according to the single-component initial dosage and the water-to-glue ratio of the cementing material;

determining the single-prescription initial dosage of the regeneration powder and the cement according to the doping amount of the regeneration powder and the single-prescription initial dosage of the cementing material;

when the raw materials of the clean slurry body also comprise an additive, the single-component initial dosage of each raw material in the clean slurry body in the step (1) is determined by the following method:

taking the sum of the single-prescription standard dosage of the cementing material obtained in the step (b) and the single-prescription standard dosage of the water in the net slurry obtained in the step (c) as the single-prescription initial dosage of the net slurry;

the initial quantitative amount of the single-formula theory of water is determined according to formula 8:

qsk ═ B/(1+1/W + p × j/W/10000) formula 8

In the formula 8, Qsk is the initial quantitative (Kg) of single theory of water; b is the single initial dosage (Kg) of the pure slurry; w is the water-to-glue ratio; p is the solid content (%) of the additive; j is admixture doping amount (%);

determining the single-component initial dosage of the cementing material according to the theoretical single-component initial dosage of water and the water-to-gel ratio;

determining the single-component initial dosage of the additive according to the single-component initial dosage of the cementing material and the mixing amount of the additive;

after single-side initial fixed dosage of the additive is obtained, determining single-side water content of the additive according to the single-side initial fixed dosage of the additive and the solid content of the additive;

the single formula initial definite dosage of the actual water is obtained by subtracting the single formula water content of the admixture from the single formula theoretical water consumption.

Preferably, the recycled light material in the step (2) is prepared from light waste, the light waste comprises one or more of commercial waste, agricultural waste and forestry waste, the commercial waste comprises one or more of polyester boards, plastic mats, foam blocks and disposable lunch boxes, the agricultural waste comprises one or more of straws, rapeseed straws, corn cobs and shells, and the forestry waste comprises one or more of roots, stems, leaves and shells of forestry plants; the particle size of the regenerated light material is less than 5 mm.

Preferably, the determination of the overall average particle size of the regenerated light material in the step (2) comprises the following steps:

setting the surplus regenerated light materials of each screen mesh with screen holes within the range of 0.15-5 mm to be equivalent to cubes with the average grain diameter as side length;

step two, determining the average particle size of the screen residue of each screen of the regenerated light material according to the formula 9:

the remaining average particle size of each mesh screen is (the side length of the square mesh of the mesh screen in the same grid plus the side length of the square mesh of the mesh screen in the last grid)/2 formula 9;

taking the cube of the average particle size of the screened residue of each grid screen as the average volume of the single particle of the screened residue of each grid screen; taking the product of the average volume of the single particles screened by each screen and the apparent density of the regenerated light material as the mass of the single particles screened by each screen; taking the ratio of the corresponding screen residue value of each grid screen to the mass of the single particles remaining on each grid screen as the number of the particles of the regenerated light material remaining on each grid screen;

the overall average particle size of the recycled light material is determined according to equation 10:

the total average particle size of the regenerated light material [ Σ (the average particle size remaining on each grid sieve × the number of particles of the regenerated light material remaining on each grid sieve) ]/(Σthe number of particles of the regenerated light material remaining on each grid sieve) is expressed by formula 10.

Preferably, the step (2) of determining the primary clear distance of the regenerated light material according to the overall average particle size of the regenerated light material comprises:

determining a first clear distance according to equation 11 and a second clear distance according to equation 12; taking the maximum value of the first clear distance and the second clear distance as the primary clear distance of the regenerated light material;

the first clear distance is the total average grain size of the regenerated light material multiplied by the prepared strength of the regenerated all-light concrete/28-day compressive strength of the clean slurry/3.8284 formula 11;

second clear distance [ (the overall average particle size of the recycled light material)³Volume of regenerated light material]^1/3-overall average particle size of the recycled light material +0.049 formula 12;

in the formula 12, the ratio of the single-component initial fixed usage amount of the net slurry body to the density of the net slurry body is used as the single-component initial fixed volume of the net slurry body; and subtracting the air volume of the regenerated all-light concrete and the single initial volume of the clean slurry body from the single volume of the regenerated all-light concrete to obtain the volume of the regenerated light material.

Preferably, the determination process of the single use amount of the regenerated light material in the step (3) includes:

i. the theoretical void fraction of the regenerated light material is determined according to equation 13:

the theoretical void ratio of the regenerated light material (primary clear distance of the regenerated light material + total average particle size of the regenerated light material)³Overall average particle size of the recycled light material³]× 100%/(primary clear distance of recycled light material + overall average particle size of recycled light material)³Formula 13;

determining a single volume of the regenerated light material according to equation 14:

the single volume of the recycled light material (1-theoretical void fraction of recycled light material) × (1-air volume of recycled all-light concrete) is 14;

determining a single use amount of the regenerated light material according to equation 15:

the single amount of the regenerated light material is equal to the single volume of the regenerated light material multiplied by the apparent density of the regenerated light material, which is 15.

Preferably, the method for adjusting the net distance of the regenerated light material in the step (4) comprises the following steps:

taking the primary clearance as a reference, adjusting and reducing the primary clearance of the regenerated light material by two levels, and adjusting and reducing according to the total average particle size of the regenerated light material of 1/5-1/10 as a base number, wherein the adjustment and reduction value corresponding to the first level is 1/5-1/10 of the total average particle size of the regenerated light material, and the adjustment and reduction value corresponding to the second level is twice of the adjustment and reduction value corresponding to the first level, so that two clearances after the first level adjustment and the second level adjustment and reduction are obtained;

if the samples corresponding to the two adjusted clear distances and the samples corresponding to the primary clear distance both meet the requirement on the workability, taking the two-stage decreased clear distances as new reference clear distances, and continuing to perform two-stage adjustment and reduction according to the overall average particle size of the regenerated light materials of 1/5-1/10 as a base number until the samples corresponding to the reference clear distances meet the requirement on the workability and the samples corresponding to the two adjusted clear distances do not meet the requirement on the workability, and taking the final reference clear distances as the clear distances of the regenerated light materials;

if only the sample corresponding to the primary clear distance in the two samples corresponding to the adjusted clear distances and the sample corresponding to the primary clear distance meet the requirement on the workability, taking the clear distance corresponding to the primary clear distance as the clear distance of the regenerated light material;

if only the samples corresponding to the primary clear distances and the samples corresponding to the primary clear distances meet the requirement on the operability, taking the clear distances corresponding to the first level as new reference clear distances, and continuing to perform two-level adjustment and reduction by taking the total average particle size of the regenerated light materials of 1/5-1/10 as a base number until the samples corresponding to the reference clear distances meet the requirement on the operability and the samples corresponding to the two adjusted clear distances do not meet the requirement on the operability, and taking the final reference clear distances as the clear distances of the regenerated light materials;

and if the samples corresponding to the two adjusted clear distances and the samples corresponding to the primary clear distance do not meet the working requirement, taking 2 times of the primary clear distance as a new reference clear distance, and performing two-stage adjustment and reduction by taking the total average particle size of the regenerated light materials of 1/5-1/10 as a base number until the samples corresponding to the reference clear distance meet the working requirement and the samples corresponding to the two adjusted clear distances do not meet the working requirement, and taking the final reference clear distance as the clear distance of the regenerated light materials.

The invention provides a mix proportion design method for producing regenerated all-light concrete by adopting regenerated powder and regenerated light material, which comprises the following steps: (1) determining the water-glue ratio, and determining the single-component initial dosage of each raw material in the paste body according to the water-glue ratio; preparing a clean slurry body according to the single-component initial fixed dosage of each raw material and measuring the density and the gas content of the clean slurry body; the raw materials in the clean slurry body comprise cement, water and regeneration powder; (2) screening the regenerated light material to obtain the oversize quality with different particle sizes; carrying out volume equivalent transformation on the regenerated light material particles with the particle size of 0.15-5 mm, and obtaining the total average particle size of the regenerated light material according to the oversize mass with different particle sizes; determining the primary clear distance of the regenerated light material according to the overall average particle size of the regenerated light material, the density and the gas content of the clean slurry body in the step (1); (3) determining the unilateral volume and the unilateral dosage of the net slurry body and the regenerated light material according to the primary clear distance of the regenerated light material in the step (2); converting the initial quantitative amount of each raw material in the clean slurry body in the step (1) into the amount of each raw material in the initial standard mixing ratio to obtain the initial standard mixing ratio; (4) adjusting the clear distance of the regenerated light material, and obtaining a corresponding mixing proportion after the clear distance is adjusted and a sample of the corresponding mixing proportion according to the determination method of the preliminary reference mixing proportion in the step (3); detecting the workability of the sample, and taking the optimal cost performance as a reference mix proportion; (5) and (3) detecting indexes of the raw materials for production adjustment, converting the reference mixing ratio into a production mixing ratio by detecting the indexes, and performing trial mixing optimization of the production mixing ratio by taking the water-glue ratio in the step (1) as a reference to obtain a final production mixing ratio.

The invention realizes the reasonable use of the regenerated powder and the regenerated light material in the production of the regenerated all-light concrete by adopting the method, obtains the total average grain diameter of the regenerated light material by screening test actual measurement data when determining the use amounts of the clean slurry and the light material which form the single-component regenerated all-light concrete, and converts the reference mix proportion into the production mix proportion only by actually measuring indexes of all raw materials when determining the production mix proportion, so the whole mix proportion design takes the detection data of the combined raw materials as the basis, and the use amounts of all the raw materials are determined by scientific and reasonable design, thereby not only meeting the internal stress balance of the regenerated all-light concrete, but also considering the workability and the cost performance.

In addition, the recycled light material is prepared from one or more of various types of light waste, such as commercial garbage, polyester boards, plastic mats, foam blocks, disposable lunch boxes and the like, agricultural garbage: straws, rapeseed stalks, corncobs, shells and the like, forestry waste: roots, stems, leaves, husks, etc. of forestry plants; light waste: the garbage is recovered as light material to produce light concrete, and has low cost, light dead weight, high and stable strength, high durability and comprehensive performance higher than that of other light material.

Finally, the mix proportion design method of the invention provides a scientific recycling channel for the mass recovery of various wastes as renewable resources for building materials.

Detailed Description

The invention provides a mix proportion design method for producing regenerated all-light concrete by adopting regenerated powder and regenerated light material, which comprises the following steps:

(1) determining the water-glue ratio, and determining the single-component initial dosage of each raw material in the paste body according to the water-glue ratio; preparing a clean slurry body according to the single-component initial fixed dosage of each raw material and measuring the density and the gas content of the clean slurry body; the raw materials in the clean slurry body comprise cement, water and regeneration powder;

carrying out volume equivalent transformation on the regenerated light material particles with the particle size of 0.15-5 mm, and obtaining the total average particle size of the regenerated light material according to the oversize mass with different particle sizes;

(4) adjusting the two-stage clear distance of the regenerated light material, and determining the corresponding mix proportion after the clear distance is adjusted according to the determination method of the preliminary reference mix proportion in the step (3) to obtain a sample with the corresponding mix proportion;

(5) and (2) detecting indexes of the raw materials for production adjustment, converting the reference mixing ratio into a production mixing ratio by detecting the indexes, and increasing and decreasing the water-glue ratio in the step (1) to perform trial mixing optimization of the production mixing ratio to obtain a final production mixing ratio.

In the present invention, unless otherwise specified, the raw materials except the reclaimed powder and the reclaimed light material are commercially available products.

The invention determines the water-glue ratio and determines the single-component initial dosage of each raw material in the pure slurry body according to the water-glue ratio; preparing a clean slurry body according to the single-component initial fixed dosage of each raw material and measuring the density and the gas content of the clean slurry body; the raw materials in the clean slurry body comprise cement, water and regeneration powder. In the invention, the single-material initial quantitative amount of each raw material refers to the initial quantitative mass of each raw material in the single-material regenerated all-light concrete.

Before determining the water-gel ratio of the clean slurry body, the raw material of the clean slurry body is preferably determined and each raw material index is detected, so that each raw material index accords with relevant regulations.

In the invention, the raw materials of the purifying body comprise cement, water and regeneration powder. The invention has no special requirements on the types of the cement and can meet the requirements on the strength and the performance of the product. In the present invention, the raw material of the net slurry body preferably further comprises an additive, and the additive is preferably a polycarboxylic acid water reducing agent.

In the invention, the regenerated powder is preferably prepared from building solid inorganic garbage and/or industrial solid inorganic garbage; the building solid inorganic garbage comprises one or more of waste bricks, waste ceramic tiles, waste concrete blocks, waste mortar, stone powder and sandstone waste, and the industrial solid inorganic garbage comprises one or more of metallurgical waste residues, mining waste residues, fuel waste residues and chemical waste residues. The invention has no special requirements on the specific types of the metallurgical waste residues, the mining waste residues, the fuel waste residues and the chemical waste residues, and the metallurgical waste residues, the mining waste residues, the fuel waste residues and the chemical waste residues which are well known by the technical personnel in the field can be adopted, such as: the metallurgical waste residue can be blast furnace slag and the like, the mining waste residue can be waste stone and the like, the fuel waste residue can be carbon residue, coal residue and the like, and the chemical waste residue can be aluminum residue and the like. In the present invention, the particle size of the reclaimed powder is preferably 0.15mm or less, and more preferably 0.02 to 0.15 mm.

In the present invention, the preparation of the reclaimed powder preferably comprises the steps of: the construction solid inorganic garbage and/or industrial solid inorganic waste are sequentially subjected to impurity removal, alkalization, drying, crushing and separation to obtain regenerated powder. In the invention, the impurity removal is to control the content of organic impurities and mud and eliminate the harm of radioactive substances. The invention has no special requirements on the specific implementation mode of impurity removal, and can achieve the effects. After impurity removal, the content of organic impurities in the reclaimed powder is preferably below 7 wt.%, and the content of mud is preferably below 5 wt.%. The invention preferably reduces the content of organic impurities, recycled powder mud and the doping amount of radioactive substances by matching and using the recycled powder. The matching use of the invention preferably reduces the content of organic impurities, recycled powder mud and the doping amount of radioactive substances by matching the use amounts of the recycled materials with each other according to the detection index condition of the recycled materials. In the invention, the alkalization mode is preferably to soak the raw material by using alkaline liquid so that the pH value of the regeneration powder is not less than 6. In the present invention, the alkaline solution is preferably a sodium hydroxide solution. The invention has no special requirement on the concentration of the alkaline solution, and can achieve the purpose. The pH value of the regenerated powder refers to the pH value of a solution obtained after the regenerated powder is soaked in water for 2 hours. The present invention does not require any particular embodiment of the disruption and separation, and the disruption and separation means known to those skilled in the art may be used. When the regenerated powder comprises a plurality of kinds, the invention has no special requirements on the blending proportion of various powders in the regenerated powder, and is determined by tests according to the performance of the regenerated all-light concrete. The present invention is preferably prepared by mixing at a fixed volume ratio or mass ratio in a certain production period, in order not to increase the detection frequency due to the change of raw materials, according to the guaranteed amount of each waste recovery in a region.

After the raw materials are determined, index detection is carried out on the raw materials of the paste purifying body. In the invention, the water index is preferably detected according to JGJ63-2006, and the concrete water standard; the indexes of the cement are preferably detected according to GB 175-2007; the indexes of the regenerated powder are preferably detected according to a composite mineral admixture of mineral admixture application technical specification GB/T51003-2014; the indexes of the admixture are preferably detected according to the concrete admixture application technical specification (GB 50119-2013).

After the raw material indexes are detected to meet the specification, the water-glue ratio is determined, and the method for determining the water-glue ratio preferably comprises the following steps:

R_i＝R_k× mu/(0.9577-1.129 k) formula 1

(c) determining the theoretical single-formula standard dosage of a cementing material according to the formula 2 and the formula 3, wherein the cementing material is a mixture of cement and regenerated powder;

qc to 1000(Ri- β)/(α -fce) formula 2

fce ═ rc

taking the maximum value of theoretical single-prescription dosage Qc-200 Kg of the cementing material as the single-prescription dosage of the cementing material;

qs + (e-d) x (c-a)/(b-a) formula 4;

(Qs/Qc) - [ (Qs/Qc- (Qs/Qc) × η ] } 0.81, 5

W ═ 0.69- [ (Qs/Qc) × (Qs/Qc) - (Qs/Qc) × η ] × 0.5589 formula 6

Eta ═ 1-F). times.lambda.formula 7

The invention has no special requirements on the specifications of the leveling layer, the heat insulating material, the batten for the building partition wall and the member for the building partition wall in the step (d), and the specifications are all known to those skilled in the art.

After the water-glue ratio is obtained, the single-component initial dosage of each raw material in the paste body is determined according to the water-glue ratio.

When the raw materials of the clean slurry body do not contain the additive, the single initial dosage of each raw material in the clean slurry body is preferably determined by the following method:

taking the unilateral standard dosage of the cementing material obtained in the step (b) as the unilateral initial dosage of the cementing material in the paste body; determining the single-component initial dosage of water according to the single-component initial dosage and the water-to-glue ratio of the cementing material; and determining the single-prescription initial dosage of the regeneration powder and the cement according to the doping amount of the regeneration powder and the single-prescription initial dosage of the cementing material.

In the present invention, the single initial dosage of water is preferably: the single-component initial dosage of water is equal to the single-component initial dosage/water-gel ratio of the cementing material.

In the invention, the mixing amount of the regenerated powder is preferably 20-60% of the total mass of the cementing material.

In the invention, the single-component initial dosage of the regeneration powder is preferably as follows: the single initial dosage of the regeneration powder is equal to the single initial dosage of the cementing material multiplied by the mixing amount of the regeneration powder.

In the invention, the single initial dosage of the cement is the single initial dosage of the cementing material-the single initial dosage of the regeneration powder.

When the raw materials of the clean slurry body also comprise an additive, the single initial dosage of each raw material in the clean slurry body is preferably determined by the following method:

taking the sum of the single-prescription standard dosage of the cementing material obtained in the step (b) and the single-prescription standard dosage of the water in the net slurry obtained in the step (c) as the single-prescription initial dosage of the net slurry; the initial quantitative amount of the single-formula theory of water is determined according to formula 8:

qsk ═ B/(1+1/W + p × j/W/10000) formula 8

In the formula 8, Qsk is the initial quantitative (Kg) of single theory of water; b is the single initial dosage (Kg) of the pure slurry; w is the water-to-glue ratio; p is the solid content (%) of the additive; j is admixture doping amount (%); determining the single-component initial dosage of the cementing material according to the theoretical single-component initial dosage of water and the water-to-gel ratio;

determining the single-prescription initial dosage of the regeneration powder and the cement according to the doping amount of the regeneration powder and the single-prescription initial dosage of the cementing material; the single-component initial dosage of the additive is determined according to the single-component initial dosage of the cementing material and the mixing amount of the additive; after single-side initial fixed dosage of the additive is obtained, determining single-side water content of the additive according to the single-side initial fixed dosage of the additive and the solid content of the additive; the single formula initial definite dosage of the actual water is obtained by subtracting the single formula water content of the admixture from the single formula theoretical water consumption.

In the invention, the single initial dosage of the cementing material is preferably as follows: the single-component initial dosage of the cementing material is equal to the theoretical single-component initial dosage/water-cement ratio of water.

In the present invention, the single initial dosage of the cement is preferably: the single-prescription initial definite quantity of cement is the single-prescription initial definite quantity of cementing material-the single-prescription initial definite quantity of regenerated powder material.

In the invention, the single initial dosage of the admixture is preferably as follows: the single initial dosage of the admixture is equal to the single initial dosage of the cementing material multiplied by the addition amount of the admixture.

In the present invention, the unilateral water content of the admixture is preferably: the single-component water content of the additive is equal to the single-component initial fixed dosage of the additive and the solid content of the additive.

In the present invention, the single initial dosage of the actual water is preferably: the actual single-component initial fixed amount of water is the single-component theoretical water consumption-the single-component water content of the admixture.

After the single-component initial quantitative amount of each raw material of the net slurry body is obtained, the net slurry body is prepared according to the single-component initial quantitative amount of each raw material, and the density and the gas content of the net slurry body are measured.

In the invention, the dosage ratio of each raw material is preferably calculated by taking the dosage of cement as a reference according to the single initial dosage of each raw material in the paste body, and then the paste body is prepared according to the dosage ratio of each raw material. The invention preferably prepares the net slurry body according to 1.5 times of the dosage of the detection container and determines the density and the gas content of the net slurry body.

In the specific embodiment of the invention, the density and the gas content of the clean slurry are preferably determined according to a building mortar basic performance test method standard JGJ/T70-2009 density test, namely the density and the gas content of the clean slurry are detected after the clean slurry is vibrated and compacted for multiple times in a detection container.

After the clean slurry body is prepared, the invention sieves the regenerated light material to obtain the oversize masses with different grain diameters; performing volume equivalent conversion on the regenerated light material particles with the particle size of 0.15-5 mm according to the screened residual mass with different particle sizes to obtain the total average particle size of the regenerated light material; and determining the primary clear distance of the regenerated light material according to the overall average particle size of the regenerated light material, the density of the net slurry body and the gas content.

In the present invention, the recycled light material is preferably prepared from light waste, the light waste comprises one or more of commercial waste, agricultural waste and forestry waste, the commercial waste comprises one or more of polyester board, plastic pad, foam block and disposable lunch box, the agricultural waste comprises one or more of straw, rapeseed straw, corn cob and shells, the forestry waste comprises one or more of root, stem, leaf and shell of forestry plant; the particle size of the regenerated light material is preferably less than 5 mm.

In the present invention, the preparation of the regenerated light material preferably comprises the following steps: and (3) sequentially carrying out impurity removal, alkalization, drying, crushing and separation on the light waste to obtain a regenerated light material. In the invention, the impurity removal is to control the content of organic impurities and mud and eliminate the harm of radioactive substances. The invention has no special requirements on the specific implementation mode of impurity removal, and can achieve the effects. The invention preferably reduces the content of organic impurities, regenerated light material mud and the doping amount of radioactive substances by matching and using the regenerated light material. The matching use of the invention preferably reduces the content of organic impurities, the content of regenerated light mud and the doping amount of radioactive substances by matching the use amount of the recycled materials with each other according to the detection index condition of the recycled materials. In the invention, the alkalization mode is preferably to soak the raw material by using alkaline liquid so that the pH value of the regeneration powder is not less than 6. In the present invention, the alkaline solution is preferably a sodium hydroxide solution. The invention has no special requirement on the concentration of the alkaline solution, and can achieve the purpose. The pH value of the regenerated light material refers to the pH value of a solution obtained after the regenerated light material is soaked in water for 2 hours. The present invention does not require any particular embodiment of the disruption and separation, and the disruption and separation means known to those skilled in the art may be used. When the regenerated light material comprises a plurality of types, the invention has no special requirements on the blending proportion of each type in the regenerated light material, and is determined by tests according to the performance of the regenerated all-light concrete. The present invention is preferably prepared by mixing at a fixed volume ratio or mass ratio in a certain production period, in order not to increase the detection frequency due to the change of raw materials, according to the guaranteed amount of each waste recovery in a region.

After the regenerated light material is obtained, the invention sieves the regenerated light material to obtain the oversize quality with different grain diameters. The method preferably screens and detects the regenerated light materials according to the quality of the sand and stone for the common concrete and the screening analysis test of the sand in the detection method standard (JGJ 52-2006).

After the oversize masses of the regenerated light materials with different particle sizes are obtained, the method performs volume equivalent transformation on the regenerated light material particles with the particle sizes of 0.15-5 mm, and obtains the overall average particle size of the regenerated light materials according to the oversize masses of the regenerated light materials with different particle sizes.

In the present invention, the method for determining the overall average particle size of the regenerated light material preferably comprises the following steps:

In the invention, the apparent density of the regenerated light material in the third step is preferably detected according to the method disclosed in CN 107132148A.

When the regeneration light material particles with the screening particle size within the range of 0.15-5 mm are subjected to volume equivalent conversion, the particles with the screening particle size smaller than 0.15mm are preferably used as regeneration powder, and the content of the regeneration powder is used for subsequent production proportioning adjustment.

After the overall average particle size of the recycled light material is obtained, the invention preferably determines the primary clearance of the recycled light material according to the overall average particle size of the recycled light material.

In the present invention, the manner of determining the primary clear distance of the regenerated light material according to the total average particle size of the regenerated light material, the density of the clean slurry body and the gas content comprises:

determining a first clear distance according to equation 11 and a second clear distance according to equation 12; and taking the maximum value of the first clear distance and the second clear distance as the primary clear distance of the regenerated light material.

in the formula 12, the ratio of the single-component initial fixed usage amount of the net slurry body to the density of the net slurry body is used as the single-component initial fixed volume of the net slurry body; the air content of the clean slurry is multiplied by 0.575 to be used as the air volume of the regenerated all-light concrete; and subtracting the air volume of the regenerated all-light concrete and the single initial volume of the clean slurry body from the single volume to serve as the volume of the regenerated light material.

According to the invention, the maximum value of the first clear distance and the second clear distance is taken as the primary clear distance, so that the internal stress balance of the regenerated all-light concrete can be met, and the workability can be considered.

After the primary clear distance of the regenerated light material is obtained, the invention determines the single volume and the single dosage of the clear slurry body and the regenerated light material according to the primary clear distance of the regenerated light material. In the invention, the single volume of the regenerated light material refers to the volume of the regenerated light material in the single regenerated all-light concrete, namely 1 cubic regenerated all-light concrete.

In the present invention, the method for determining the single amount of the light regeneration material preferably comprises:

In the present invention, the air volume of the recycled all-light concrete in the formula 14 refers to the volume of air in 1 cubic of the recycled all-light concrete; the apparent density of the regenerated light material in the formula 15 is preferably detected according to a method disclosed in CN 107132148A.

After the single formula dosage of the regenerated light material is obtained, the invention determines the single formula volume of the net slurry body. In the invention, the single volume of the clean slurry body refers to the volume of the clean slurry body in 1 cubic regenerative all-light concrete.

In the invention, the single volume of the net slurry body is 1-the single volume of the regenerated light material-the air volume of the regenerated all-light concrete.

After the single volume of the pure slurry body is obtained, the initial quantitative amount of each raw material in the pure slurry body is converted into the amount of each raw material in the initial standard mixing ratio, so that the initial standard mixing ratio is obtained.

In the present invention, the conversion process of the preliminary reference mix ratio preferably includes:

multiplying the single volume of the clean slurry body by the density of the clean slurry body to be used as the single dosage of the existing clean slurry body;

the amounts of the respective raw materials in the preliminary reference compounding ratio are preferably obtained according to formula 16:

the amount of each raw material is x (amount of each raw material/amount of each raw material) formula 16.

Since the water absorption of the regenerated light material is large, when the actual water consumption in the reference mixing proportion is determined, the actual mixing water consumption is equal to the water consumption of the clean slurry plus (1-stacking porosity of the regenerated light material) multiplied by the total detection water absorption of the regenerated light material multiplied by the usage of the regenerated light material. In the present invention, the bulk porosity and water absorption of the regenerated light material are preferably measured according to the method disclosed in CN 107132148A.

After the preliminary reference mixing proportion of the regenerated all-light concrete is obtained, adjusting the clear distance of the regenerated light concrete, and obtaining a corresponding mixing proportion after the clear distance is adjusted and a sample with the corresponding mixing proportion according to the method for determining the preliminary reference mixing proportion; and detecting the workability of the sample, and taking the optimal cost performance as a reference mixing ratio.

In the present invention, the method for adjusting the net distance of the regenerated light material preferably comprises:

if the samples corresponding to the two adjusted clear distances and the samples corresponding to the primary clear distance both meet the working requirement, taking the two-stage decreased clear distance as a new reference clear distance, and continuing to perform two-stage adjustment and reduction by taking the total average particle size of the regenerated light materials of 1/2-1/5 as a base number until the samples corresponding to the reference clear distance meet the working requirement, and taking the final reference clear distance as the clear distance of the regenerated light materials and the mixing ratio corresponding to the final reference clear distance as a reference mixing ratio when the samples corresponding to the two adjusted clear distances do not meet the working requirement;

if only the sample corresponding to the primary clear distance in the two samples corresponding to the adjusted clear distances and the sample corresponding to the primary clear distance meet the requirement on the workability, taking the clear distance corresponding to the primary clear distance as the clear distance of the regenerated light material, and taking the mixing ratio corresponding to the final reference clear distance as the reference mixing ratio;

if only the samples corresponding to the primary clear distances and the samples corresponding to the primary clear distances after adjustment meet the working requirement, taking the clear distances corresponding to the first level as new reference clear distances, and continuing to perform two-level adjustment and reduction by taking the total average particle size of the regenerated light materials from 1/5 to 1/10 as a base number until the samples corresponding to the reference clear distances meet the working requirement and the samples corresponding to the two adjusted clear distances do not meet the working requirement, taking the final reference clear distances as the clear distances of the regenerated light materials, and taking the mix ratio corresponding to the final reference clear distances as a reference mix ratio;

and if the samples corresponding to the two adjusted clear distances and the samples corresponding to the primary clear distances do not meet the working requirement, performing two-stage adjustment and reduction by taking 2 times of the primary clear distance as a new reference clear distance and taking the total average particle size of the regenerated light materials of 1/5-1/10 as a base number until the samples corresponding to the reference clear distances meet the working requirement and the samples corresponding to the two adjusted clear distances do not meet the working requirement, and taking the final reference clear distance as the clear distance of the regenerated light materials and the mixing ratio corresponding to the final reference clear distance as the reference mixing ratio.

In the present invention, the workability preferably includes consistency, water retention and volume weight. The invention adopts the adjustment method of the clear distance, which can meet the requirement of workability, and simultaneously, the smaller the clear distance is, the less the clear slurry is, the larger the consumption of the regenerated light material in the single-side regenerated all-light concrete is, and the lower the cost is, therefore, the adjustment method of the clear distance provided by the invention can ensure that the obtained reference mix ratio meets the requirement of the highest cost performance.

In the invention, when the minimum trial mixing amount of the sample workability detection is to detect the performance of the regenerated all-light concrete, the sample workability detection method is preferably to detect according to the requirement of the basic performance test method standard JGJ70-90 of the building mortar, and the sample workability detection method is to prepare and detect according to 1.5 times of the weight of the regenerated all-light concrete wet material required by the detection container.

After the reference mixing ratio is determined, the invention detects the indexes of each raw material for production adjustment, converts the reference mixing ratio into the production mixing ratio through detecting the indexes, and performs trial mixing optimization of the production mixing ratio by taking the water-glue ratio adopted when the single-material initial dosage of each raw material of the net slurry body is determined as the reference to obtain the final production mixing ratio.

In the present invention, the method of converting the reference mixing ratio into the production mixing ratio by detecting the index of each raw material preferably includes:

and detecting the water content of each raw material and the powder content of the regenerated light material, keeping the dry weight of each raw material consistent with the dry weight of each raw material in the reference mixing proportion, and converting the reference mixing proportion into a production mixing proportion.

The specific process of the conversion is preferably as follows: detecting the water content of each raw material and the powder content of the regenerated light material in the clean slurry body, when the raw materials contain water, increasing the use amount of each raw material according to the water content of the raw materials, ensuring the dry material use amount of each raw material in the reference mixing proportion to be unchanged, and simultaneously deducting the total water content of each raw material from the total water use amount determined by the reference mixing proportion; when the light material contains powder with the particle size of less than 0.15mm, the using amount of the regenerated light material is increased according to the powder content, the using amount of the regenerated light material in the particle size range of 0.15-5 mm in the reference mixing proportion is ensured to be unchanged, and the using amount of the regenerated powder is reduced.

In the present invention, the trial mixing optimization of the production mix ratio preferably comprises the following steps:

taking the water-glue ratio adopted when determining the initial quantitative amount of each raw material of the clean slurry body as a reference, generally increasing or decreasing a numerical value less than 0.2 at the same time to obtain two increased or decreased water-glue ratios, respectively adopting the reference water-glue ratio and the two increased or decreased water-glue ratios for trial mixing, and taking the mixing ratio corresponding to the reference water-glue ratio as the final production mixing ratio if the sample workability corresponding to the reference water-glue ratio is optimal;

if the sample workability corresponding to the adjusted and increased water-glue ratio is optimal, taking the adjusted and increased water-glue ratio as a new reference water-glue ratio, and simultaneously increasing or decreasing a numerical value smaller than 0.2 to obtain two new increased and decreased water-glue ratios, respectively adopting the new reference water-glue ratio and the two increased and decreased water-glue ratios for trial mixing until the workability of the reference water-glue ratio is optimal, and taking the mixing ratio corresponding to the reference water-glue ratio as a final production mixing ratio;

and if the sample workability corresponding to the adjusted and reduced water-glue ratio is optimal, taking the adjusted and reduced water-glue ratio as a new reference water-glue ratio, simultaneously increasing and decreasing a numerical value smaller than 0.2 to obtain two new water-glue ratios after increasing and decreasing, respectively adopting the new reference water-glue ratio and the two water-glue ratios after increasing and decreasing to carry out trial mixing until the workability of the reference water-glue ratio is optimal, and taking the mixing ratio corresponding to the reference water-glue ratio as a final production mixing ratio.

In the invention, when the trial mixing optimization of the production mixing proportion is carried out, the water-glue ratio is further preferably increased or decreased by 0.05 at the same time.

The present invention has no special requirements for the implementation of the workability and index detection, and the implementation manner known to those skilled in the art can be adopted.

The invention can ensure the workability of the regenerated all-light concrete by performing trial mixing optimization of the production mix proportion in the mode, and simultaneously, the larger the water-cement ratio is, the less the gelling amount is, and the lower the cost of the single-side regenerated all-light concrete is, so that the workability is ensured, and the optimal cost performance is also ensured.

The mixing proportion design method of the invention is mainly used for designing necessary raw materials for preparing the regenerated all-light concrete, and other auxiliary materials (such as silica fume, waterproof powder, thickening agent and the like) for improving or enhancing the performance of the regenerated all-light concrete.

The design method of the mix ratio of the recycled all-light concrete provided by the invention is described in detail with reference to the following examples, but the design method is not to be construed as limiting the scope of the invention.

Example 1

The prepared regenerated all-light concrete is used for batten products for building partition walls, the strength of the batten is MU5, the range of consistency is 70-90 mm when construction is required, the consistency set value is 70mm, the production level is determined to be general, the initial setting time is more than 3 hours, the final setting time is more than 5 hours, the 28-day compressive strength is more than or equal to 5MPa, and the prepared regenerated all-light concrete meets the requirements of relevant specifications, production requirements, reasonable product performance and unit price and the like.

First, the clean slurry body is determined and the density and the gas content are measured

1. The raw materials of the selected clean slurry body are as follows: the concrete is 42.5 cement, the recycled powder is powder (with the particle size of 0.02-0.15 mm) which is obtained by mixing and grinding recycled old concrete blocks and waste bricks (in a volume ratio of 2: 1-3: 1), and the additive is a polycarboxylic acid water reducing agent.

2. And (3) measuring the indexes of the raw materials:

the block strength standard deviation is not more than 1.25 according to the specification, the actual statistical strength standard deviation is 1.2, and the specification requirement is met. The statistics of the cement abundance coefficient is 1.1, the mixing amount of an externally added water reducing agent is 2.5 percent, the water reducing rate is 23 percent, the solid content of an additive is measured to be 27 percent, the 28-day strength of the clean slurry is determined according to the specification, and the mud content of the regenerated powder is 3 percent by weight.

The indexes are as follows: the production level is determined according to the proficiency of production technology control, the consistency is determined by a production mould and a process, and the slurry strength is determined by the general technical standard of the light batten for the building partition wall and is not less than M5.0 MPa; the cement strength is determined by the quality and unit price of the cement which can be purchased in the region, the abundance coefficient is detected and counted according to the selected cement, the mixing amount of the regenerated powder is selected according to the general range of 25-60 percent, and is determined to be 49 percent by a mortar strength detection test; the activity index of the regenerated powder mixed with cement is 49 percent (namely the tested mortar is 230g of cement, 220g of regenerated powder, 1350g of ISO sand and 225g of water) of the regenerated powder is 47.6 percent; the water reducing rate, the mixing amount and the solid content of the additive are detected and determined by tests according to a standard detection method.

3. Determining the preparation strength:

the preparation strength Q of the regenerated all-light concrete is calculated according to the current design rule of the mix proportion of the masonry mortar, because the construction level is common, k is 1.15, the strength MU5 of the prepared lath is 27% actually measured, and therefore, the preparation strength of the regenerated all-light concrete is 5 multiplied by 1.15/(0.9577-1.129 multiplied by 0.27) which is 8.81 MPa.

4. And determining the water-glue ratio and the single-component initial dosage of each raw material.

4-1, determining the water-gel ratio W according to the initial dosage of each raw material:

a, determining the initial gel amount by referring to the JGJ/T98-2010 specification (masonry mortar mix proportion design rule):

taking the standard alpha as a characteristic coefficient of 3.03; taking a beta characteristic coefficient of-15.09;

measured strength of cement is 1.1X 42.5-46.75 MPa

The gel dosage is 1000(8.81+ 15.09)/(3.03X 46.75), 168.7Kg and less than 200Kg, and 200Kg is taken.

B, determining the unilateral standard dosage Qs of water in the mortar body by referring to (masonry mortar mix proportion design rule) JGJ/T98-2011 standard:

(the amount of water used in determining the reference mix ratio should be free of physical and chemical water absorption of the raw materials used in the body cleaner).

The thickness of the regenerated all-light concrete is 70mm, the thickness range required by the production of the regenerated all-light concrete is as follows: minimum value a 70mm, maximum value b 90mm, design consistency c 70mm, water usage range: the minimum value d is 270Kg and the maximum value e is 330 Kg.

Qs＝d+(e-d)×(c-a)/(b-a)＝270+(330-270)×(70-70)/(90-70)＝270Kg

C, determining the water-gel ratio according to the application: producing a ribbon board with the length of more than 1 meter, wherein eta is as follows:

(1-49％)×47.6％＝0.2427；

water-glue ratio W is 270X 0.69/200- (270/200-270X 0.2427/200). times. 0.5589 is 0.36

4-2, the raw materials of the embodiment use the admixture as the mixing ratio, the initial dosage of each raw material of the net slurry is:

the single prescription dosage B of the pure slurry body is 200+ 270-470 Kg

Measuring the doping amount j% of the additive to be used to be 2.5%, the water reducing rate g% to be 23% and the solid content p% to be 27%;

initial single-formula theory of water:

Qsk＝B/(1+1/W+p×j/W/10000)

＝470/(1+1/0.36+27×2.5/0.36/10000＝123.797Kg；

the total amount of the cementing material is Qsk/W (123.797/0.36) and 343.88 Kg;

the dosage of the additive is Wc equals Jz multiplied by f equals 343.88 multiplied by 2.5 equals 8.597 Kg;

the admixture contains Wh ═ Wc × (100-h)/100 ═ 8.597 × (100-27)/100 ═ 6.276 Kg;

the dosage of the regenerated powder material Qf ~% i x Jz ═ 343.88 × 49/100 ═ 168.5 Kg;

the cement dosage Qc-Jz-Qf-343.88-168.5-175.38 Kg;

the actual water consumption Ws is Qsk-Wh 123.797-6.276 is 117.521 Kg;

the dosage ratio of the raw materials of the paste body is as follows: water: cement: regeneration of powder: the specific amounts of the raw materials are shown in table 1, except that the additive is 0.67:1:0.961: 0.049.

Table 1 results of the amounts of the respective raw materials

5. Preparing a clean slurry body, detecting the density of the clean slurry body and measuring the gas content of the clean slurry body:

the net weight of the pure slurry filled in 2 detection containers is 1Kg, the preparation amount is not less than 1.5 times, 2X 1X 1.5 is 3Kg, and the minimum preparation pure slurry is 3 Kg.

The amount of each raw material of 3Kg of net slurry obtained by the above ratio is shown in Table 2.

TABLE 2 results of raw material dosage for 3Kg of paste

Mixed mortar slurry	Water (W)	Cement	Powder material	Additive agent	Unit of
						The dosage of each raw material	127.1	189.7	182.3	9.3	Kg
The dosage of each raw material	0.670	1.000	0.961	0.049	Ratio of
						Test volume for measuring density	0.75	1.12	1.08	0.05	Kg

Weighing the raw materials according to the mixing amount of the selected raw materials for measuring the density, and uniformly mixing the raw materials by using a small-sized mixer according to the existing (building sand)Pulp base performance test method standard) method determines the neat paste density as: 1552Kg/m³See table 3 for details.

TABLE 3 Density of neat slurries

The air content of the clean slurry is detected to be 8.7%, and the air volume of the regenerated all-light concrete is converted to be about 8.7% multiplied by 0.335-5%.

Secondly, determining the dosage of the regenerated light material

1. Grading of recycled light material

Sawdust particles produced in a wood processing factory are selected as a regeneration light material, two particles with the average particle size of 0.35mm and 0.42mm are mixed according to the volume ratio of 1:1, two samples are taken, and the screening data are shown in table 4.

Table 4 recycled light material screening data

2. Detecting various indexes of the regenerated light material

The apparent density, bulk density, water absorption and bulk porosity of the recycled light material were measured by the method disclosed in CN107132148A, and the specific results are shown in table 5.

TABLE 5 indexes of recycled light material

3. Calculation of the overall average particle size of the recycled light material:

calculating the total average particle size of the regenerated light material according to the following steps:

a. setting the regenerated light material of the screen residue of each screen to be equivalent to a cube taking the average grain diameter as the side length according to the screen residue mass with different grain diameters;

b. converting the regenerated light material with the screened particle size of less than 0.15mm into regenerated powder for subsequent proportioning adjustment;

c. calculating the average particle size of the screen residue of each screen of the regenerated light material, wherein the calculation formula is as follows: the average particle size of the rest of the sieve of each grid is (the side length of the square mesh of the sieve of the grid plus the side length of the square mesh of the sieve of the previous grid)/2;

d. the total average particle size of the regenerated light material is obtained by sequentially calculating according to the following formula:

the average volume of the single particles left by the screen of each grid is equal to the cube of the average particle size left by the screen of each grid;

the mass of the single particle left by each screen is equal to the average volume of the single particle left by each screen and the apparent density of the regenerated light material

Thirdly, the number of particles of the regenerated light materials left by the screen of each grid is equal to the corresponding screen residue value of each grid/the mass of the single particles left by the screen of each grid;

and fourthly, the total average particle size of the regenerated light material is [ ∑ (the average particle size of the rest of the sieve screens of each grid multiplied by the number of the rest of the regenerated light material of the sieve screens of each grid) ]/(Σthe number of the rest of the regenerated light material of the sieve screens of each grid).

The calculation results are shown in Table 6.

TABLE 6 regenerated light material grading test conclusion

4. Calculating volume of regenerated light material cube

And performing volume equivalent conversion for analyzing and calculating the reasonable using amount of the regenerated light material. The cube side length (unit: mm, precision: 0.1) of the regenerated light material is taken as the total average grain diameter of the regenerated light material.

Volume (unit: mm) of regenerated light material cube³And precision: 0.1) ═ cube side length of the cube of the recycled light material.

The volume of the cube is 0.386 × 0.386 × 0.386 0.0575mm³。

5. Calculating the clear distance of the regenerated light material particles:

(1) calculating the first clear distance of the regenerated light material particles by using an equal pressure method

The first clear distance is the overall average particle size of the recycled light material x the formulated strength of the recycled all-light concrete/28 day compressive strength of the clean slurry/3.8284.

The prepared strength is 8.81MPa, the strip plate strength is MU5, 42.5 cement is adopted, the coefficient of abundance is 1.1, and the 28-day compressive strength of the net slurry body is 1.1 multiplied by 42.5 which is 46.8 MPa.

Therefore, the first clear distance is the total average grain diameter of the recycled light material multiplied by the formulated strength of the recycled all-light concrete/28-day compressive strength of the slurry/3.8284 is 0.386 × 8.81/46.8/3.8284 is 0.019 mm.

(2) Calculating the second clear distance of the regenerated light material particles by adopting a work-preserving method

The initial dosage of the pure slurry body is 470Kg, and the density of the pure slurry body is 1552Kg/m³The air content of the regenerated all-light concrete is 5 percent.

The initial volume of the net slurry is the initial dosage of the net slurry/density of the net slurry is 470/1552-0.303 m³.

The volume of regenerated light material (1-air volume-initial volume of clean slurry) is 1-0.05-0.303-0.647 m³.

Second clear distance [ (the overall average particle size of the recycled light material)³Volume of regenerated light material]^1/3Overall average particle size of the recycled light material +0.049 ═ 0.386 (³/0.647)^1/3-0.386+0.049＝0.109mm。

(3) The reasonable clear distance for regenerating the light material is the maximum value of the first clear distance and the second clear distance, namely the maximum value of pressure balance and work-keeping performance.

The reasonable clear distance is 0.109-0.019, so 0.109mm is taken.

6. Calculating the single dosage of the regenerated light material

The theoretical void ratio of the regenerated light material (primary clear distance of the regenerated light material + total average particle size of the regenerated light material)³Regenerated light-material cube volume]× 100%/(primary clear distance of recycled light material + overall average particle size of recycled light material)³＝[(0.109+0.386)³-0.647]×100％/(0.109+0.386)³＝52.66％，

The volume of the single regenerated light material is (1-theoretical porosity of the regenerated light material) x (1-air volume) is (1-52.66%) × (1-0.05) is 0.45;

the volume of the single amount of the regenerated light material multiplied by the apparent density of the regenerated light material is 0.45 multiplied by 726.4 to 327 (Kg).

7. Calculating a single volume of a neat paste

The volume of the net slurry is 1-the volume of the regenerated light material-the volume of the air is 1-0.05-0.45-0.50.

Thirdly, determining the initial reference mixing ratio of the slurry

The respective use amount of each raw material of the net slurry body is converted into the respective use amount of the net slurry body through the initial determination of the use amount of each raw material of the net slurry body to obtain the preliminary reference mix proportion, which specifically comprises the following steps:

the dosage of the existing pure slurry is that the single volume of the pure slurry is multiplied by the density of the pure slurry is 0.50 multiplied by 1552 which is 776 Kg.

The total amount of the initially clean slurry is 776Kg, the initial cement is 175.36Kg, so the cement consumption is converted into 175.36X 776/470 ═ 289.5Kg, the water consumption is 117.56X 776/470 ═ 194.1Kg (not considering the water absorption of the regenerated light material), and the rest is the same.

The water absorption detected by the regenerated light material is very high, so that the water consumption is increased and the actual water inlet and outlet are very high, and tests show that: the internal structure of the regenerated light material particles is loose, namely the volume composition is except the material, and the gap is large, so the detected water absorption rate comprises two parts: the material itself absorbs water and the gaps outside the material itself absorb water. The proportion of the self water absorption of the material to the total water absorption of the regenerated light material is as follows: 1-bulk porosity of reclaimed aggregate.

Calculating the formula: the water consumption for the actual mixing is the water consumption for the clean slurry + (1-stacking porosity of regenerated aggregate) x the total detection water absorption of the light material x the amount of regenerated light material.

The stacking porosity of the regenerated light material is 74.1%, and the total detected water absorption of the regenerated light material is 149.5%, so that the self water absorption of the regenerated light material is (1-0.741) × 149.5%: 38.7%.

Therefore, the water consumption is 194.1+327 × 38.7% and 321 Kg.

The preliminary base mix ratios after conversion are shown in table 7.

TABLE 7 preliminary Standard match ratio results

Fourthly, trial mixing is carried out according to the preliminary reference mixing proportion, and the workability is detected

1. Trial mixing comparison method

And (3) based on the preliminary reference mixing proportion, optimizing the amount of the clean slurry, adjusting and reducing the clean distance of the two-stage regenerated aggregates by adopting a trial mixing comparison method, wherein the clean distance of the two-stage regenerated light materials cannot be adjusted, and respectively calculating the respective mixing proportion amount according to a reference mixing proportion calculation method to detect the workability for judgment.

In this example, the clear distance of the recycled light material was 0.109, and the mix ratios for comparison were determined at-0.01 and-0.02, respectively.

2. The initial detection indexes of the workability are as follows: the consistency, water retention and volume weight do not exceed the design value.

3. Mixing the raw materials according to the three mixing ratios, and determining a reference mixing ratio:

1) the minimum mixing amount and the detection method are detected according to the current (standard of the basic performance test method of the building mortar) requirements.

2) And on the premise that the workability is basically met, detecting the compressive strength and the like according to the actual production mixing proportion. Unreasonably readjust raw materials or mix proportion.

3) Other performance-improving materials commonly used in slurries (e.g.: waterproof powder, tensile fiber, silicon powder and the like) are directly doped according to the using amount and the reasonable doping amount of the cementing material, and the reasonable doping amount is independently determined according to tests.

The concrete mixing ratio and the workability are shown in table 8.

TABLE 8 trial and mix proportion and workability

From the trial test results in table 8, it can be seen that: the adjustment ratios 1 and 2 are relatively poor in overall workability due to the fact that the amount of light materials is too large, except that the volume weight of the moisture is reduced, and therefore the proportion is relatively reasonable according to the initially determined reference.

Fifthly, determining the production mixing proportion

1. The parameters of raw materials for producing the mixing proportion are detected, and the method mainly comprises the following steps: actual moisture content of the regenerated light material, content of powder in the regenerated light material, water absorption of the regenerated light material, moisture content of the regenerated powder and the like.

In this embodiment: the powder content was 9.3% and the water content was 1.1%, as shown in Table 9.

TABLE 9 detection results of moisture content of reclaimed powder

2. Conversion production mixing ratio

The reference mix ratio is shown in Table 10.

TABLE 10 base mix ratio

And converting the reference mixing ratio into a production mixing ratio under the condition of keeping the reference mixing ratio unchanged according to the parameters.

3. Optimizing the production mixing ratio: and (4) increasing or decreasing the determined water-gel ratio of the slurry by 0.05 to carry out trial matching, carrying out index detection on workability, performance and the like, and selecting an optimal reference ratio as a production mixing ratio.

In this embodiment: the mixing amount is at least 31 Kg.

The production mix proportion of the test mix is shown in Table 11.

Table 11 production mix proportions of trial mix

The performance of each mixture ratio in table 11 is detected, and the detection results are shown in table 12.

TABLE 12 test results

From the above results, it appears that: the production is most reasonable according to the reference mixing proportion, and the preparation of the regenerated all-light concrete is carried out according to the mixing proportion, so that the wide application of various wastes in the field of buildings is successfully realized.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A mix proportion design method of regenerated all-light concrete is characterized by comprising the following steps:

2. The mix proportion design method according to claim 1, wherein the reclaimed powder in the step (1) is prepared from building solid inorganic garbage and/or industrial solid inorganic garbage; the building solid inorganic garbage comprises one or more of waste bricks, waste ceramic tiles, waste concrete blocks, waste mortar, stone powder and sandstone waste, and the industrial solid inorganic garbage comprises one or more of metallurgical waste residues, mining waste residues, fuel waste residues and chemical waste residues; the particle size of the regenerated powder is less than 0.15 mm.

3. The method of claim 1 or 2, wherein the content of sludge in the reclaimed powder is 5 wt.% or less.

4. The mix proportion design method according to claim 1, wherein the method for determining the water-to-glue ratio in the step (1) comprises the following steps:

R_i＝R_k× mu/(0.9577-1.129 k) formula 1

Qc～＝1000(R_i- β)/(α. fce) formula 2

fce ═ rc

qs + (e-d) x (c-a)/(b-a) formula 4;

(Qs/Qc) - [ (Qs/Qc- (Qs/Qc) × η ] } 0.81, 5

W ═ 0.69- [ (Qs/Qc) × (Qs/Qc) - (Qs/Qc) × η ] × 0.5589 formula 6

Eta ═ 1-F). times.lambda.formula 7

5. The mix proportion designing method according to claim 4,

when the raw materials of the clean slurry body do not contain additives, the single-component initial dosage of each raw material in the clean slurry body in the step (1) is determined by the following method:

qsk ═ B/(1+1/W + p × j/W/10000) formula 8

6. The mix proportion design method according to claim 1, wherein the recycled light material in the step (2) is prepared from light waste, the light waste comprises one or more of commercial waste, agricultural waste and forestry waste, the commercial waste comprises one or more of polyester board, plastic pad, foam block and disposable lunch box, the agricultural waste comprises one or more of straw, rapeseed straw, corncob and shells, the forestry waste comprises one or more of root, stem, leaf and shell of forestry plant; the particle size of the regenerated light material is less than 5 mm.

7. A mix proportion design method as claimed in claim 1 or 6, wherein the determination of the overall average particle size of the light reclaimed material in the step (2) comprises the following steps:

8. The mix proportion design method of claim 7, wherein the step (2) of determining the primary clearance of the recycled light material according to the total average particle size of the recycled light material, the density and the gas content of the net slurry body in the step (1) comprises the following steps:

in the formula 12, the ratio of the single-component initial fixed usage amount of the net slurry body to the density of the net slurry body is used as the single-component initial fixed volume of the net slurry body; the air content of the clean slurry is multiplied by 0.575 to be used as the air volume of the regenerated all-light concrete; and subtracting the air volume of the regenerated all-light concrete and the single initial volume of the clean slurry body from the single volume of the regenerated all-light concrete to obtain the volume of the regenerated light material.

9. The mix proportion design method of claim 1, wherein the step (3) of determining the amount of the regenerated light material single prescription comprises the steps of:

10. The mix proportion design method of claim 1, wherein the method for adjusting the net distance of the recycled light material in the step (4) comprises the following steps: