CN110482945A - A kind of Machine-made Sand regeneration concrete and preparation method thereof for high speed base course - Google Patents
A kind of Machine-made Sand regeneration concrete and preparation method thereof for high speed base course Download PDFInfo
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- CN110482945A CN110482945A CN201910733237.3A CN201910733237A CN110482945A CN 110482945 A CN110482945 A CN 110482945A CN 201910733237 A CN201910733237 A CN 201910733237A CN 110482945 A CN110482945 A CN 110482945A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The Machine-made Sand regeneration concrete and preparation method thereof that the invention discloses a kind of for high speed base course, it wherein, include following components by weight percent for the Machine-made Sand regeneration concrete of high speed base course: 320-340 parts of cement, 927-1027 parts of regenerated coarse aggregates, 869-969 parts of Machine-made Sands, 218 parts of water and 1.5-2.25 parts of water-reducing agents；Aggregate regeneration is processed as from the macadam base material of highway digging section milling, it is configured to the Machine-made Sand regeneration concrete that strength grade is met the requirements and fills out back the digging section as base material, on the one hand the bearing capacity and service level of Liao Gaiduan highway are obviously improved, on the other hand be also the building waste processing difficulty that solves to be generated by road construction with simply as the low effective means of aggregate regeneration added value, to realize building energy conservation.
Description
Technical field
The present invention relates to the Concrete technical field of civil engineering more particularly to a kind of machines for high speed base course
Sand regeneration concrete processed and preparation method thereof.
Background technique
Since reform and opening-up, China's rapid economic development constantly increases energy demand, socio-economic development and supply
Between contradiction become increasingly conspicuous, it is energy saving have become China realize the sustainable development of socio-economy a fundamental state policy.Currently,
Building energy consumption is still AND ENERGY RESOURCES CONSUMPTION IN CHINA rich and influential family, and it is energy-saving and emission-reduction that building total energy consumption, which accounts for 30% or more of social terminal energy consumption,
The problem of major fields, building energy conservation, is urgently to be resolved.
Summary of the invention
The Machine-made Sand regeneration concrete and preparation method thereof that the purpose of the present invention is to provide a kind of for high speed base course,
The problem of aiming to solve the problem that building energy conservation.
To achieve the above object, in a first aspect, the present invention provides a kind of Machine-made Sand regeneration for high speed base course is mixed
Solidifying soil, including following components by weight percent:
320-340 parts of cement, 927-1027 parts of regenerated coarse aggregates, 869-969 parts of Machine-made Sands, 218 parts of water and 1.5-2.25
Part water-reducing agent.
Wherein, the Machine-made Sand regeneration concrete for high speed base course, including following components by weight percent:
340 parts of cement, 927.1 parts of regenerated coarse aggregates, 969 parts of Machine-made Sands, 218 parts of water and 1.5 parts of water-reducing agents.
Wherein, the Machine-made Sand regeneration concrete for high speed base course, including following components by weight percent:
320 parts of cement, 927.1 parts of regenerated coarse aggregates, 969 parts of Machine-made Sands, 218 parts of water and 2.25 parts of water-reducing agents.
Wherein, the Machine-made Sand regeneration concrete for high speed base course, including following components by weight percent:
320 parts of cement, 1027 parts of regenerated coarse aggregates, 869.4 parts of Machine-made Sands, 218 parts of water and 2.25 parts of water-reducing agents.
Wherein, the cement is portland cement, water-cement ratio 0.66.
Wherein, the regenerated coarse aggregate partial size is 5mm-26.5mm.
Wherein, the Machine-made Sand is middle sand, partial size 0.5mm-5mm, water absorption rate 2%, fineness modulus 3.
Wherein, the water-reducing agent is powdered water-reducing agent, volume 0.6-0.9%.
Second aspect, the present invention provide a kind of preparation method of Machine-made Sand regeneration concrete for high speed base course, packet
It includes:
The Machine-made Sand that partial size is 0.5mm-5mm is screened out of construction waste；
Steady layer of water waste material is dug out from cement stabilized macadam base, filtering out partial size with screening plant is 5mm-26.5mm's
Regenerated coarse aggregate；
Test grain composition, bulk density, apparent density, water absorption rate, faller gill index and the crushing of the regenerated coarse aggregate
Index；
Wet agitated kettle, empties ponding, and cement, regenerated coarse aggregate, Machine-made Sand, water and water-reducing agent is added and is stirred, shape
At material, mixing time 90S-120S is mixed, amount of agitation is less than or equal to the 90% of agitated kettle rated capacity；
Material will be mixed to pour into the base's slot excavated, sequentially insert vibration once comprehensively with poker vibrator, Forming Mechanism sand
Regeneration concrete.
Wherein, it pours into the base's slot excavated material will be mixed, it is primary sequentially to insert vibration comprehensively with poker vibrator, is formed
Before Machine-made Sand regeneration concrete, the preparation method further include:
The useless steady layer of water clast in base's slot is removed, and lays steel mesh on base's slot, steel mesh is that diameter is 6mm's
Reinforcing bar, grid are made by 10 multiplied by 10mm size.
A kind of Machine-made Sand regeneration concrete and preparation method thereof for high speed base course of the invention, passes through following weight
Component: 320-340 parts of cement, 927-1027 parts of regenerated coarse aggregates, 869-969 parts of Machine-made Sands, 218 parts of water and 1.5-2.25 parts subtract
Aqua；Using construction waste as Machine-made Sand, aggregate regeneration is processed as with the macadam base material of highway digging section milling,
It is configured to the Machine-made Sand regeneration concrete that strength grade is met the requirements and fills out back the digging section as base material, on the one hand obviously mention
On the other hand the bearing capacity and service level of Sheng Liaogaiduan highway are also that the building waste for solving to be generated by road construction is handled
It is difficult with simply as the low effective means of aggregate regeneration added value, to realize building energy conservation.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is flow diagram of the present invention for the preparation method of the Machine-made Sand regeneration concrete of high speed base course.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In a first aspect, the present invention provides a kind of Machine-made Sand regeneration concretes for high speed base course, including weigh as follows
Measure component:
320-340 parts of cement, 927-1027 parts of regenerated coarse aggregates, 869-969 parts of Machine-made Sands, 218 parts of water and 1.5-2.25
Part water-reducing agent.
Embodiment 1:
A kind of Machine-made Sand regeneration concrete for high speed base course, including following components by weight percent:
340 parts of cement, 927.1 parts of regenerated coarse aggregates, 969 parts of Machine-made Sands, 218 parts of water and 1.5 parts of water-reducing agents.
32.5 ordinary portland cement of cement selection, ordinary portland cement by lime stone, clay, Iron Ore Powder press than
Then the levigate mixing of example, mixture at this time are calcined raw material, general temperature is at 1450 degree or so, calcined production
Object is then levigate together by clinker and gypsum clinker, mixes in proportion, is just referred to as cement.Portland cement intensity is high, solidifying
Knot hardening is fast；The heat of hydration is high, C3S and C3A content is high in Portland clinker.Keep early stage thermal discharge big, exotherm rate is fast, by force
Degree is high, often can avoid freeze injury for winter construction；Good frost resistance, portland cement mixture is not susceptible to bleeding, after hardening
Behavior of Hardened Cement Paste density it is larger, so frost resistance be better than other general-purpose cements；Basicity is high, resisting carbonization is strong, and portland cement is hard
Behavior of Hardened Cement Paste after change shows strong basicity, is embedded in reinforcing bar therein one layer of grey passivating film of Surface Creation in alkaline environment, can protect
Hold reinforcing bar decades non-corrosive；Drying shrinkage is small, and portland cement forms a large amount of hydrated calcium silicate gel body in hardening process,
Keep Behavior of Hardened Cement Paste closely knit, free moisture is few, is not likely to produce cup shake；Wearability is good.Water-cement ratio is 0.66, and water-cement ratio, which refers to, often to be stood
The ratio of square rice concrete water amount and all gel material contents.Save cement consumption.The regenerated coarse aggregate is that high speed is public
The original cement rigid base in road digging section construction site is through milling, the recycled aggregate for being crushed, screening out, the regenerated coarse aggregate
Partial size is 5mm-26.5mm, and the recycled coarse aggregate contents are 100%, realizes conversion of the building waste to buildings and resources,
The exploitation to natural resources is avoided, environment is protected, the value added applications to building waste is realized, rather than simply will
It is used for paved roads base.The Machine-made Sand be middle sand, partial size 0.5mm-5mm, water absorption rate 2%, fineness modulus 3,
The fineness of the fineness modulus characterization sand grains diameter and the index of classification.The Machine-made Sand is discarded tailing machine-made sand finished product money
Source recycles sand processed, and the use for Machine-made Sand can reduce the exhaustive exploitation for natural river sand, while realize discarded tail
The recycling of ore resources, the Machine-made Sand compare natural river sand and have the following characteristics that 1, stablize supply problem, and natural sand is due to more
The exploitation in year, resource is fewer and fewer, and supply falls short of demand, rapid rise of price, and supplies and do not ensure with quality；And Machine-made Sand raw material fills
Foot, as long as having the place production mechanism sand of stone, urban architecture waste material (building waste), rubble tailing, leftover bits and pieces, stone
Bits, rock ballast, mill tailings etc. all can serve as Machine-made Sand raw material.2, price problem, price of the Machine-made Sand in various regions are not quite similar,
But substantially all it is cheaper than river sand very much, compared with river sand, cheap 20 yuan per ton of Machine-made Sand or so.In addition, the profit of Machine-made Sand
It is rather considerable, it is calculated with 2000 ton/days of scale and according to present market price, monthly estimated 1,000,000 yuan of gross profit or more.3, ring
Guarantor's problem, the production of traditional mechanism sand can bring the environmental problems such as dust pollution, but continuously improving with technology for making sand really, existing
Full-closed structure is used substantially in production, and each machine mouth has water spray to be arranged, dust is not excessive, and the dry process of environmental protection,
The problems such as being not required to wash, not generating sewage, mud, fugitive dust.4, the robustness of Machine-made Sand still can reach GB/T 141684293
The high-class product index of standard.5, influence of the Machine-made Sand content of stone powder to cement mixture performance.It is tried by the test of cement, mortar
Test, concrete test, with Machine-made Sand concrete batching and natural sand without big difference, in general, with the slump under the premise of,
The water consumption of Machine-made Sand wants slightly larger, but to be considered according to factors such as execution conditions and works and transports.But to concrete
Intensity is basically unchanged, and is noticed that sand coarse aggregate ratio is unsuitable excessively high when preparing the special concretes such as pump concrete with Machine-made Sand, is prevented from reducing mixed
The solidifying soil construction qualities such as intensity and durability.6, the granularity of Machine-made Sand is more irregular, past when using structure bonds such as cement
Toward having better degree of adhesion, more resistance to compression, service life is also longer.In conclusion in the area of natural sand resource shortage, manufacture makes
Meet engineering construction demand with high-quality Machine-made Sand and be not only feasible, comprehensive benefit is also considerable.The water
For tap water.The water-reducing agent is powdered water-reducing agent, volume 0.6-0.9%.The water-reducing agent is a kind of in maintenance coagulation
Under conditions of the native slump is basically unchanged, the concrete admixture of mixing water amount can be reduced.It is living to belong to anionic surface mostly
Property agent, there is lignosulfonates, naphthalene sulphonate formaldehyde polymer etc..Being added after concrete mix has dispersion to make cement granules
With can improve its workability, reduce unit consumption of water, improve the mobility of concrete mix；Or unit cement consumption is reduced,
Save cement.Machine made of 340 parts of cement, 927.1 parts of regenerated coarse aggregates, 969 parts of Machine-made Sands, 218 parts of water and 1.5 parts of water-reducing agents
Sand regeneration concrete processed, ratio of mud W/C are 0.64, compression strength 26.31MPa.The ratio of mud refers to the dosage of water in concrete
With the weight ratio of cement consumption.
Embodiment 2:
A kind of Machine-made Sand regeneration concrete for high speed base course, including following components by weight percent:
320 parts of cement, 927.1 parts of regenerated coarse aggregates, 969 parts of Machine-made Sands, 218 parts of water and 2.25 parts of water-reducing agents.
32.5 ordinary portland cement of cement selection, ordinary portland cement by lime stone, clay, Iron Ore Powder press than
Then the levigate mixing of example, mixture at this time are calcined raw material, general temperature is at 1450 degree or so, calcined production
Object is then levigate together by clinker and gypsum clinker, mixes in proportion, is just referred to as cement.Portland cement intensity is high, solidifying
Knot hardening is fast；The heat of hydration is high, C3S and C3A content is high in Portland clinker.Keep early stage thermal discharge big, exotherm rate is fast, by force
Degree is high, often can avoid freeze injury for winter construction；Good frost resistance, portland cement mixture is not susceptible to bleeding, after hardening
Behavior of Hardened Cement Paste density it is larger, so frost resistance be better than other general-purpose cements；Basicity is high, resisting carbonization is strong, and portland cement is hard
Behavior of Hardened Cement Paste after change shows strong basicity, is embedded in reinforcing bar therein one layer of grey passivating film of Surface Creation in alkaline environment, can protect
Hold reinforcing bar decades non-corrosive；Drying shrinkage is small, and portland cement forms a large amount of hydrated calcium silicate gel body in hardening process,
Keep Behavior of Hardened Cement Paste closely knit, free moisture is few, is not likely to produce cup shake；Wearability is good.Water-cement ratio is 0.66, and water-cement ratio, which refers to, often to be stood
The ratio of square rice concrete water amount and all gel material contents.Save cement consumption.The regenerated coarse aggregate is that high speed is public
The original cement rigid base in road digging section construction site is through milling, the recycled aggregate for being crushed, screening out, the regenerated coarse aggregate
Partial size is 5mm-26.5mm, and the recycled coarse aggregate contents are 100%, realizes conversion of the building waste to buildings and resources,
The exploitation to natural resources is avoided, environment is protected, the value added applications to building waste is realized, rather than simply will
It is used for paved roads base.The Machine-made Sand be middle sand, partial size 0.5mm-5mm, water absorption rate 2%, fineness modulus 3,
The fineness of the fineness modulus characterization sand grains diameter and the index of classification.The Machine-made Sand is discarded tailing machine-made sand finished product money
Source recycles sand processed, and the use for Machine-made Sand can reduce the exhaustive exploitation for natural river sand, while realize discarded tail
The recycling of ore resources, the Machine-made Sand compare natural river sand and have the following characteristics that 1, stablize supply problem, and natural sand is due to more
The exploitation in year, resource is fewer and fewer, and supply falls short of demand, rapid rise of price, and supplies and do not ensure with quality；And Machine-made Sand raw material fills
Foot, as long as having the place production mechanism sand of stone, urban architecture waste material (building waste), rubble tailing, leftover bits and pieces, stone
Bits, rock ballast, mill tailings etc. all can serve as Machine-made Sand raw material.2, price problem, price not to the utmost phase of the Machine-made Sand in various regions
Together, but substantially all it is cheaper than river sand very much, compared with river sand, cheap 20 yuan per ton of Machine-made Sand or so.In addition, the profit of Machine-made Sand
Also rather considerable, it is calculated with 2000 ton/days of scale and according to present market price, monthly estimated 1,000,000 yuan of gross profit or more.3,
Environmental issue, the production of traditional mechanism sand can bring the environmental problems such as dust pollution, but continuously improving with technology for making sand really,
Production now uses full-closed structure substantially, and each machine mouth has water spray to be arranged, and dust is not excessive, and the dry method work of environmental protection
Skill, the problems such as being not required to wash, do not generate sewage, mud, fugitive dust.4, the robustness of Machine-made Sand still can reach GB/T
The high-class product index of 141684293 standards.5, influence of the Machine-made Sand content of stone powder to cement mixture performance.Pass through the examination of cement
It tests, mortar test, concrete test, with Machine-made Sand concrete batching and natural sand without big difference, in general, the same to slump
Under the premise of, the water consumption of Machine-made Sand wants slightly larger, but to be considered according to factors such as execution conditions and works and transports.But it is right
The intensity of concrete is basically unchanged, and is noticed that sand coarse aggregate ratio is unsuitable excessively high when preparing the special concretes such as pump concrete with Machine-made Sand, is prevented
Only reduce the construction qualities such as concrete strength and durability.6, the granularity of Machine-made Sand is more irregular, is using the structures such as cement
When bonding, often there are better degree of adhesion, more resistance to compression, service life is also longer.In conclusion on the ground of natural sand resource shortage
Area, manufacture are met engineering construction demand using high-quality Machine-made Sand and are not only feasible, and comprehensive benefit is also considerable
's.The water is tap water.The water-reducing agent is powdered water-reducing agent, volume 0.6-0.9%.The water-reducing agent is that one kind exists
Under conditions of maintaining concrete slump to be basically unchanged, the concrete admixture of mixing water amount can be reduced.Mostly belong to yin from
Sub- surfactant has lignosulfonates, naphthalene sulphonate formaldehyde polymer etc..It is added after concrete mix to cement granules
There is peptizaiton, its workability can be improved, reduces unit consumption of water, improve the mobility of concrete mix；Or reduce unit
Cement consumption saves cement.320 parts of cement, 927.1 parts of regenerated coarse aggregates, 969 parts of Machine-made Sands, 218 parts of water and 2.25 parts of diminishings
Machine-made Sand regeneration concrete made of agent, ratio of mud W/C are 0.68, compression strength 25.23MPa.
Embodiment 3:
A kind of Machine-made Sand regeneration concrete for high speed base course, including following components by weight percent:
320 parts of cement, 1027 parts of regenerated coarse aggregates, 869.4 parts of Machine-made Sands, 218 parts of water and 2.25 parts of water-reducing agents.
32.5 ordinary portland cement of cement selection, ordinary portland cement by lime stone, clay, Iron Ore Powder press than
Then the levigate mixing of example, mixture at this time are calcined raw material, general temperature is at 1450 degree or so, calcined production
Object is then levigate together by clinker and gypsum clinker, mixes in proportion, is just referred to as cement.Portland cement intensity is high, solidifying
Knot hardening is fast；The heat of hydration is high, C3S and C3A content is high in Portland clinker.Keep early stage thermal discharge big, exotherm rate is fast, by force
Degree is high, often can avoid freeze injury for winter construction；Good frost resistance, portland cement mixture is not susceptible to bleeding, after hardening
Behavior of Hardened Cement Paste density it is larger, so frost resistance be better than other general-purpose cements；Basicity is high, resisting carbonization is strong, and portland cement is hard
Behavior of Hardened Cement Paste after change shows strong basicity, is embedded in reinforcing bar therein one layer of grey passivating film of Surface Creation in alkaline environment, can protect
Hold reinforcing bar decades non-corrosive；Drying shrinkage is small, and portland cement forms a large amount of hydrated calcium silicate gel body in hardening process,
Keep Behavior of Hardened Cement Paste closely knit, free moisture is few, is not likely to produce cup shake；Wearability is good.Water-cement ratio is 0.66, and water-cement ratio, which refers to, often to be stood
The ratio of square rice concrete water amount and all gel material contents.Save cement consumption.The regenerated coarse aggregate is that high speed is public
The original cement rigid base in road digging section construction site is through milling, the recycled aggregate for being crushed, screening out, the regenerated coarse aggregate
Partial size is 5mm-26.5mm, and the recycled coarse aggregate contents are 100%, realizes conversion of the building waste to buildings and resources,
The exploitation to natural resources is avoided, environment is protected, the value added applications to building waste is realized, rather than simply will
It is used for paved roads base.The Machine-made Sand be middle sand, partial size 0.5mm-5mm, water absorption rate 2%, fineness modulus 3,
The fineness of the fineness modulus characterization sand grains diameter and the index of classification.The Machine-made Sand is discarded tailing machine-made sand finished product money
Source recycles sand processed, and the use for Machine-made Sand can reduce the exhaustive exploitation for natural river sand, while realize discarded tail
The recycling of ore resources, the Machine-made Sand compare natural river sand and have the following characteristics that 1, stablize supply problem, and natural sand is due to more
The exploitation in year, resource is fewer and fewer, and supply falls short of demand, rapid rise of price, and supplies and do not ensure with quality；And Machine-made Sand raw material fills
Foot, as long as having the place production mechanism sand of stone, urban architecture waste material (building waste), rubble tailing, leftover bits and pieces, stone
Bits, rock ballast, mill tailings etc. all can serve as Machine-made Sand raw material.2, price problem, price not to the utmost phase of the Machine-made Sand in various regions
Together, but substantially all it is cheaper than river sand very much, compared with river sand, cheap 20 yuan per ton of Machine-made Sand or so.In addition, the profit of Machine-made Sand
Also rather considerable, it is calculated with 2000 ton/days of scale and according to present market price, monthly estimated 1,000,000 yuan of gross profit or more.3,
Environmental issue, the production of traditional mechanism sand can bring the environmental problems such as dust pollution, but continuously improving with technology for making sand really,
Production now uses full-closed structure substantially, and each machine mouth has water spray to be arranged, and dust is not excessive, and the dry method work of environmental protection
Skill, the problems such as being not required to wash, do not generate sewage, mud, fugitive dust.4, the robustness of Machine-made Sand still can reach GB/T
The high-class product index of 141684293 standards.5, influence of the Machine-made Sand content of stone powder to cement mixture performance.Pass through the examination of cement
It tests, mortar test, concrete test, with Machine-made Sand concrete batching and natural sand without big difference, in general, the same to slump
Under the premise of, the water consumption of Machine-made Sand wants slightly larger, but to be considered according to factors such as execution conditions and works and transports.But it is right
The intensity of concrete is basically unchanged, and is noticed that sand coarse aggregate ratio is unsuitable excessively high when preparing the special concretes such as pump concrete with Machine-made Sand, is prevented
Only reduce the construction qualities such as concrete strength and durability.6, the granularity of Machine-made Sand is more irregular, is using the structures such as cement
When bonding, often there are better degree of adhesion, more resistance to compression, service life is also longer.In conclusion on the ground of natural sand resource shortage
Area, manufacture are met engineering construction demand using high-quality Machine-made Sand and are not only feasible, and comprehensive benefit is also considerable
's.The water is tap water.The water-reducing agent is powdered water-reducing agent, volume 0.6-0.9%.The water-reducing agent is that one kind exists
Under conditions of maintaining concrete slump to be basically unchanged, the concrete admixture of mixing water amount can be reduced.Mostly belong to yin from
Sub- surfactant has lignosulfonates, naphthalene sulphonate formaldehyde polymer etc..It is added after concrete mix to cement granules
There is peptizaiton, its workability can be improved, reduces unit consumption of water, improve the mobility of concrete mix；Or reduce unit
Cement consumption saves cement.320 parts of cement, 1027 parts of regenerated coarse aggregates, 869.4 parts of Machine-made Sands, 218 parts of water and 2.25 parts subtract
Machine-made Sand regeneration concrete made of aqua, ratio of mud W/C are 0.68, compression strength 24.98MPa.
It will implement the 1, compression strength corresponding with 3 different ratio of embodiment of embodiment 2 to compare, and be recorded in table 1:
First group of proportion is construction site using proportion as shown in Table 1, is optimal proportion, other two groups of proportions compare performance
For be not much different compared with first group of effect, be also able to satisfy site operation demand.
Second aspect, referring to Fig. 1, the present invention provides a kind of Machine-made Sand regeneration concretes for high speed base course
Preparation method:
S101, the Machine-made Sand that partial size is 0.5mm-5mm is screened out of construction waste.
In embodiments of the present invention, the Machine-made Sand can be urban architecture waste material (building waste), rubble tailing, get a foothold
Material, aggregate chips, rock ballast, mill tailings etc., the utilization for the Machine-made Sand, can reduce the exhaustive exploitation to natural river sand, together
When realize the recycling of discarded tailing resource.
S102, steady layer of water waste material is dug out from cement stabilized macadam base, filtering out partial size with screening plant is 5mm-
26.5mm regenerated coarse aggregate.
In embodiments of the present invention, cement stabilized macadam base is a kind of half for high-grade highway underlayment or base
Rigid pavement structure is the main structure type of China Higher grade highway.The reconstruction of high-grade highway disease is overhauled, water
The punishment and utilization of cement-stabilizing broken stone base are that design and construction have to solve the problems, such as, by highway digging section milling
Macadam base material is processed as aggregate regeneration.With being transported to broken, screening branch by the steady layer of water waste material excavated, symbol is utilized
Desired crushing process is closed to be crushed steady layer of water waste material, be sieved into the regenerated coarse aggregate that partial size is 5mm-26.5mm.According to investment
The amount of the amount of the steady layered material of broken waste water and the recycled aggregate actually obtained obtains the available broken ratio of recycled aggregate, calculates
The steady layer of water excavated whether can be filled up completely, and respective material dosage plans are made according to result.
S103, the grain composition of the test regenerated coarse aggregate, bulk density, apparent density, water absorption rate, faller gill index and
Crush index.
In embodiments of the present invention, categorised collection is carried out to the recycled aggregate of each discharge port of screening plant, considers Regenerated Bone
The randomness and variability of itself are expected, to guarantee the quality of production, according to standard GB/T/T 14685-2011 " normal concrete
With sand, Shi Zhiliang and test method standard ", and domestic and international relevant criterion is combined, such as " concrete regenerated coarse aggregate " (GB/T
Grain composition, bulk density, apparent density, water absorption rate, faller gill index and crush index 25177-2010) are carried out to recycled aggregate
Performance test.The regenerated coarse aggregate performance is as shown in table 2:
S104, wet agitated kettle, empty ponding, and cement, regenerated coarse aggregate, Machine-made Sand, water and water-reducing agent is added and is stirred
It mixes, material is mixed in formation.
In embodiments of the present invention, the volume of the Machine-made Sand and regenerated coarse aggregate design uses minute design side
Method, this method fully consider the influence of the two particle diameter distribution, by using the volume ratio of both least square method selections to guarantee
The gap that coarse-fine aggregate is formed is minimum, and cement is enable to wrap up the gap in coarse-fine aggregate and fill concrete sufficiently to guarantee it
Working performance.The technological parameters such as mixer coordination in works proportioning accuracy, the mix slump, mixer outlet concrete mix
The slump of object should be determined according to the optimum slump value of making plus the gradual loss value of the slump in transportational process, and be answered
It is finely adjusted at any time according to haul distance length, temperature height.Mixer should soak agitated kettle before mixing and stirring the 1st disk mixture, and
Empty ponding.Reasonable mixing time should be selected according to Mixing Machine, wherein Double-horizontal-shaft forced action type mixing time is preferably 90-
120s.Blender concrete amount of agitation is not to be exceeded the 90% of its rated capacity.Before the vehicle charging for transporting coagulation scholar, Ying Qingjie
Compartment or vehicle tank, watering profit wall, drain ponding.Concrete answers mortar leakage prevention, material leakage and pollution during transportation, prevents mix
Object isolation.Concrete mixer charges, transports, the time of discharging must be strictly controlled, and should control at 60 to 90 minutes or so.
The useless steady layer of water clast in base's slot is removed, and lays steel mesh on base's slot, steel mesh is the reinforcing bar that diameter is 6mm, net
Lattice are made by 10 multiplied by 10mm size.
S105, it will mix and expect to pour into the base's slot excavated, sequentially insert vibration once comprehensively with poker vibrator, formed again
Growing concrete.
In embodiments of the present invention, after sending vehicle to reach pouring location, material will be mixed and stirred and directly poured into the base's slot excavated.
Steady layer of water thickness is generally more than 60cm, and concrete answers placement layer by layer.The loose metal thickness of casting, is considered as the influence of jolt ramming and reserves
Certain height.The concrete poured mixes and stirs material, sequentially should insert vibration once comprehensively with poker vibrator in time, vibrator
Mobile to answer slow and uniform, should be subject to surface when vibrating no longer bubbles and glows cement slurry.After concrete vibrating, with big wood
Plate smears repeatedly plastering until surface is without bleeding.After concrete base layer surfacing, Ying Jinhang health is being laid with base
Have enough intensity and quality before asphalt surface course.During health, it must prevent the moisture of concrete from evaporating and air-drying, in order to avoid generate
Contraction fissure.According to the case where construction site and condition, select it is wet controls health, conditioned time is 3 days.Using plastic film mixed
The surface of base, daily uniform sprinkling are covered in after solidifying soil final set.
The explanation of value, step S102 can all may be used before and after step S101.
A kind of Machine-made Sand regeneration concrete and preparation method for high speed base course provided by the invention, including weigh as follows
Measure component: 320-340 parts of cement, 927-1027 parts of regenerated coarse aggregates, 869-969 parts of Machine-made Sands, 218 parts of water and 1.5-2.25 parts
Water-reducing agent.Using construction waste as Machine-made Sand, aggregate is processed as with the macadam base material of highway digging section milling and is made profits again
With being configured to the regeneration concrete that strength grade is met the requirements and fill out back the digging section as base material, be on the one hand obviously improved
On the other hand the bearing capacity and service level of Liao Gaiduan highway are also that the building waste processing for solving to be generated by road construction is stranded
It is difficult with simply as the low effective means of aggregate regeneration added value, to realize building energy conservation.Preparation simultaneously
The slump 20-40mm of regeneration concrete, and stick poly- property and good water-retaining property, that is, there is good workability, be suitable for work
The more demanding regeneration concrete of property.It may advantageously facilitate development of the regeneration concrete to recycled high performance concrete direction, promote
The high-grade application of China's construction refuse regenerated aggregate improves China's construction refuse resource utilization rate, is conducive to promote China
Construction refuse resource utilization technology, preferably realize conversion of the building waste to buildings and resources, further push China
The sustainable development of Resource Architecture environment.
Above disclosed is only a preferred embodiment of the present invention, cannot limit the power of the present invention with this certainly
Sharp range, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and weighs according to the present invention
Benefit requires made equivalent variations, still belongs to the scope covered by the invention.
Claims (10)
1. a kind of Machine-made Sand regeneration concrete for high speed base course, which is characterized in that including following components by weight percent:
320-340 parts of cement, 927-1027 parts of regenerated coarse aggregates, 869-969 parts of Machine-made Sands, 218 parts of water and 1.5-2.25 parts subtract
Aqua.
2. being used for the Machine-made Sand regeneration concrete of high speed base course as described in claim 1, which is characterized in that including weighing as follows
Measure component:
340 parts of cement, 927.1 parts of regenerated coarse aggregates, 969 parts of Machine-made Sands, 218 parts of water and 1.5 parts of water-reducing agents.
3. being used for the Machine-made Sand regeneration concrete of high speed base course as described in claim 1, which is characterized in that including weighing as follows
Measure component:
320 parts of cement, 927.1 parts of regenerated coarse aggregates, 969 parts of Machine-made Sands, 218 parts of water and 2.25 parts of water-reducing agents.
4. being used for the Machine-made Sand regeneration concrete of high speed base course as described in claim 1, which is characterized in that including weighing as follows
Measure component:
320 parts of cement, 1027 parts of regenerated coarse aggregates, 869.4 parts of Machine-made Sands, 218 parts of water and 2.25 parts of water-reducing agents.
5. the Machine-made Sand regeneration concrete for high speed base course as described in any one of claim 1-4, feature exist
In,
The cement is portland cement, water-cement ratio 0.66.
6. being used for the Machine-made Sand regeneration concrete of high speed base course as claimed in claim 5, which is characterized in that
The regenerated coarse aggregate partial size is 5mm-26.5mm.
7. being used for the Machine-made Sand regeneration concrete of high speed base course as claimed in claim 5, which is characterized in that
The Machine-made Sand is middle sand, partial size 0.5mm-5mm, water absorption rate 2%, fineness modulus 3.
8. being used for the Machine-made Sand regeneration concrete of high speed base course as claimed in claim 5, which is characterized in that
The water-reducing agent is powdered water-reducing agent, volume 0.6-0.9%.
9. a kind of preparation method of the Machine-made Sand regeneration concrete for high speed base course characterized by comprising
The Machine-made Sand that partial size is 0.5mm-5mm is screened out of construction waste；
Steady layer of water waste material is dug out from cement stabilized macadam base, filters out the regeneration that partial size is 5mm-26.5mm with screening plant
Coarse aggregate；
Test grain composition, bulk density, apparent density, water absorption rate, faller gill index and the crush index of the regenerated coarse aggregate；
Wet agitated kettle, empties ponding, and cement, regenerated coarse aggregate, Machine-made Sand, water and water-reducing agent is added and is stirred, formation is stirred
And material, mixing time 90S-120S, amount of agitation are less than or equal to the 90% of agitated kettle rated capacity；
Material will be mixed to pour into the base's slot excavated, sequentially insert vibration once comprehensively with poker vibrator, the regeneration of Forming Mechanism sand
Concrete.
10. the preparation method for the Machine-made Sand regeneration concrete of high speed base course, feature exist as claimed in claim 9
In, it is poured into the base's slot excavated material will be mixed, is sequentially inserted and shaken once comprehensively with poker vibrator, the regeneration of Forming Mechanism sand
Before concrete, the preparation method further include:
The useless steady layer of water clast in base's slot is removed, and lays steel mesh on base's slot, steel mesh is the steel that diameter is 6mm
Muscle, grid are made by 10 multiplied by 10mm size.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111574165A (en) * | 2020-04-21 | 2020-08-25 | 北京智华通科技有限公司 | Low-crack full-solid waste cement stabilized macadam base material and preparation and construction method thereof |
| CN114351743A (en) * | 2021-12-02 | 2022-04-15 | 内蒙古平庄煤业(集团)有限责任公司 | Method and device for preparing in-situ sand pebble impermeable material and constructing water-intercepting curtain |
| CN114477901A (en) * | 2022-02-07 | 2022-05-13 | 连云港美特佳新型建材有限公司 | Compression-resistant carbonization-resistant recycled concrete and preparation method thereof |
| CN114988781A (en) * | 2022-05-18 | 2022-09-02 | 三亚瑞泽再生资源利用有限公司 | Recycled concrete material for enhancing pore characteristics and preparation method thereof |
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2019
- 2019-08-09 CN CN201910733237.3A patent/CN110482945A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111574165A (en) * | 2020-04-21 | 2020-08-25 | 北京智华通科技有限公司 | Low-crack full-solid waste cement stabilized macadam base material and preparation and construction method thereof |
| CN114351743A (en) * | 2021-12-02 | 2022-04-15 | 内蒙古平庄煤业(集团)有限责任公司 | Method and device for preparing in-situ sand pebble impermeable material and constructing water-intercepting curtain |
| CN114477901A (en) * | 2022-02-07 | 2022-05-13 | 连云港美特佳新型建材有限公司 | Compression-resistant carbonization-resistant recycled concrete and preparation method thereof |
| CN114988781A (en) * | 2022-05-18 | 2022-09-02 | 三亚瑞泽再生资源利用有限公司 | Recycled concrete material for enhancing pore characteristics and preparation method thereof |
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