CN111499289A - High-strength heat-insulating concrete and preparation method thereof - Google Patents
High-strength heat-insulating concrete and preparation method thereof Download PDFInfo
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- CN111499289A CN111499289A CN202010415413.1A CN202010415413A CN111499289A CN 111499289 A CN111499289 A CN 111499289A CN 202010415413 A CN202010415413 A CN 202010415413A CN 111499289 A CN111499289 A CN 111499289A
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- 239000004567 concrete Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 41
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 26
- 239000000919 ceramic Substances 0.000 claims abstract description 25
- 239000000843 powder Substances 0.000 claims abstract description 25
- 239000004568 cement Substances 0.000 claims abstract description 13
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 12
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 11
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 11
- 239000001110 calcium chloride Substances 0.000 claims abstract description 11
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 11
- 239000010881 fly ash Substances 0.000 claims abstract description 11
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 11
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 51
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 11
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 10
- 239000005751 Copper oxide Substances 0.000 claims description 10
- 239000012752 auxiliary agent Substances 0.000 claims description 10
- 229910000431 copper oxide Inorganic materials 0.000 claims description 10
- 239000002270 dispersing agent Substances 0.000 claims description 10
- 239000000395 magnesium oxide Substances 0.000 claims description 10
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 10
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 10
- 239000002244 precipitate Substances 0.000 claims description 10
- 239000002562 thickening agent Substances 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 10
- 239000011787 zinc oxide Substances 0.000 claims description 10
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 125000001931 aliphatic group Chemical group 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- 239000010962 carbon steel Substances 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 229920000728 polyester Polymers 0.000 claims description 5
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 5
- 239000000376 reactant Substances 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 238000005336 cracking Methods 0.000 abstract description 8
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004321 preservation Methods 0.000 abstract description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract description 2
- 229910021529 ammonia Inorganic materials 0.000 abstract description 2
- 230000003197 catalytic effect Effects 0.000 abstract description 2
- 238000005524 ceramic coating Methods 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 230000001954 sterilising effect Effects 0.000 abstract description 2
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/45—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on copper oxide or solid solutions thereof with other oxides
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/453—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zinc, tin, or bismuth oxides or solid solutions thereof with other oxides, e.g. zincates, stannates or bismuthates
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
-
- 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
- C04B2111/00025—Aspects relating to the protection of the health, e.g. materials containing special additives to afford skin protection
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the technical field of concrete preparation, and discloses a high-strength heat-insulating concrete which comprises the following components in parts by weight: 100-200 parts of cement, 80-160 parts of water, 10-40 parts of a water reducing agent, 15-55 parts of a drought strength agent, 30-60 parts of fly ash, 5-20 parts of sodium sulfate, 20-80 parts of calcium chloride, 10-40 parts of an anti-cracking fiber agent and 50-90 parts of far infrared ceramic powder. According to the invention, the anti-cracking fiber agent is added into the traditional concrete raw material, so that micro-gaps on the concrete interface can be filled, the bonding force between the interfaces is enhanced, the crack resistance and the compressive strength of the concrete are greatly increased, the far infrared ceramic coating (containing the nano titanium oxide coating) has a catalytic oxidation function, OH < - > is generated under the irradiation of sunlight (especially ultraviolet rays), indoor benzene, formaldehyde, sulfide, ammonia and odor substances can be effectively removed, the anti-cracking fiber agent has the functions of sterilization and heat preservation, the efficacy of the concrete is greatly increased on the basis of reducing heat loss, and the anti-cracking fiber agent has a certain market popularization prospect.
Description
Technical Field
The invention relates to the technical field of concrete preparation, in particular to high-strength heat-insulating concrete and a preparation method thereof.
Background
The concrete is a general term for engineering composite materials formed by cementing aggregate into a whole by cementing materials, and the term concrete generally refers to cement concrete which is prepared by mixing cement as the cementing material, sand and stone as the aggregate and water (which may contain additives and admixtures) according to a certain proportion and stirring, and is also called common concrete, and is widely applied to civil engineering.
However, the concrete prepared by the existing method has the advantages that the overall compressive strength and the anti-cracking strength are different, the corresponding protection effect on buildings cannot be achieved, and meanwhile, the heat preservation effect of the concrete prepared by the existing method is not ideal enough, and the heat loss is easily caused. Accordingly, those skilled in the art have provided a high strength thermal insulation concrete and a method for preparing the same to solve the problems set forth in the background art described above.
Disclosure of Invention
The invention aims to provide high-strength heat-insulating concrete and a preparation method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the high-strength heat-insulating concrete comprises the following components in parts by weight: 100-200 parts of cement, 80-160 parts of water, 10-40 parts of a water reducing agent, 15-55 parts of a dry strength agent, 30-60 parts of fly ash, 5-20 parts of sodium sulfate, 20-80 parts of calcium chloride, 10-40 parts of an anti-crack fiber agent and 50-90 parts of far infrared ceramic powder, wherein the preparation method of the anti-crack fiber agent comprises the following steps:
a: weighing a thickening agent, fibers, a dispersing agent and an inorganic auxiliary agent in sequence for later use;
b: and D, pouring the fibers and the inorganic auxiliary agent in the step A into a reaction kettle in sequence for carrying out constant temperature reaction, then pouring the thickening agent into the reaction kettle, continuously stirring for 15min to obtain a mixture, finally pouring the dispersing agent, continuously stirring for 30min, and standing for 5min to obtain the anti-crack fiber agent.
As a still further scheme of the invention: the fiber is any two of polyester fiber, glass fiber, carbon fiber or steel fiber, the length of the fiber is 40mm, and the tensile strength is 800 MPa.
As a still further scheme of the invention: the water reducing agent is an aliphatic high-efficiency water reducing agent or an amino high-efficiency water reducing agent with the molecular weight of 15000-19000.
As a still further scheme of the invention: the preparation method of the far infrared ceramic powder comprises the following steps:
a: weighing copper oxide, titanium oxide, zinc oxide and magnesium oxide in sequence according to the weight parts for later use;
b: respectively pouring the copper oxide, the titanium oxide, the zinc oxide and the magnesium oxide in the step a into deionized water for fully dissolving to obtain a reactant solution with the concentration of 3.2M, adding 8% ammonia water for mixing, stirring for 30min, pouring into a centrifuge for filtering and washing to obtain a precipitate;
c: and (c) pouring the precipitate obtained in the step (b) into a roller dryer, drying at the temperature of 50-80 ℃, crushing by a crusher, and screening by a vibrating screen to obtain the far infrared ceramic powder with the average particle size of 25 mm.
A preparation method of high-strength heat-insulating concrete comprises the following steps:
the method comprises the following steps: sequentially adding cement, a drought strength agent, fly ash, sodium sulfate and calcium chloride into a hopper, conveying the hopper into a stirrer for mixing treatment, slowly adding water during stirring, continuously stirring for 1h, adding a water reducing agent, and stirring for 10min again to obtain a mixture I;
step two: and (3) adding an anti-crack fiber agent into the mixture I in the step (I), uniformly stirring, adding far infrared ceramic powder, and stirring for 40min again to obtain the finished concrete.
As a still further scheme of the invention: the stirring speed in the second step is 100rpm, and the temperature should be controlled to be 50-70 ℃ in the stirring process.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the anti-cracking fiber agent is added into the traditional concrete raw material, so that micro-gaps on the concrete interface can be filled, the bonding force between the interfaces is enhanced, the crack resistance and the compressive strength of the concrete are greatly increased, the far infrared ceramic coating (containing the nano titanium oxide coating) has a catalytic oxidation function, OH < - > is generated under the irradiation of sunlight (especially ultraviolet rays), indoor benzene, formaldehyde, sulfide, ammonia and odor substances can be effectively removed, the anti-cracking fiber agent has the functions of sterilization and heat preservation, the efficacy of the concrete is greatly increased on the basis of reducing heat loss, and the anti-cracking fiber agent has a certain market popularization prospect.
Detailed Description
In embodiment 1 of the present invention, a high strength thermal insulation concrete comprises the following components in parts by weight: 120 parts of cement, 100 parts of water, 20 parts of water reducing agent, 25 parts of dry strength agent, 40 parts of fly ash, 10 parts of sodium sulfate, 40 parts of calcium chloride, 20 parts of anti-crack fiber agent and 70 parts of far infrared ceramic powder, wherein the preparation method of the anti-crack fiber agent comprises the following steps:
a: weighing a thickening agent, fibers, a dispersing agent and an inorganic auxiliary agent in sequence for later use;
b: and D, pouring the fibers and the inorganic auxiliary agent in the step A into a reaction kettle in sequence for carrying out constant temperature reaction, then pouring the thickening agent into the reaction kettle, continuously stirring for 15min to obtain a mixture, finally pouring the dispersing agent, continuously stirring for 30min, and standing for 5min to obtain the anti-crack fiber agent.
Preferably: the fiber is any two of polyester fiber, glass fiber, carbon fiber or steel fiber, the length of the fiber is 40mm, and the tensile strength is 800 MPa.
Preferably: the water reducing agent is an aliphatic high-efficiency water reducing agent or an amino high-efficiency water reducing agent with the molecular weight of 15000-19000.
Preferably: the preparation method of the far infrared ceramic powder comprises the following steps:
a: weighing copper oxide, titanium oxide, zinc oxide and magnesium oxide in sequence according to the weight parts for later use;
b: respectively pouring the copper oxide, the titanium oxide, the zinc oxide and the magnesium oxide in the step a into deionized water for fully dissolving to obtain a reactant solution with the concentration of 3.2M, adding 8% ammonia water for mixing, stirring for 30min, pouring into a centrifuge for filtering and washing to obtain a precipitate;
c: and (c) pouring the precipitate obtained in the step (b) into a roller dryer, drying at the temperature of 50-80 ℃, crushing by a crusher, and screening by a vibrating screen to obtain the far infrared ceramic powder with the average particle size of 25 mm.
A preparation method of high-strength heat-insulating concrete comprises the following steps:
the method comprises the following steps: sequentially adding cement, a drought strength agent, fly ash, sodium sulfate and calcium chloride into a hopper, conveying the hopper into a stirrer for mixing treatment, slowly adding water during stirring, continuously stirring for 1h, adding a water reducing agent, and stirring for 10min again to obtain a mixture I;
step two: and (3) adding an anti-crack fiber agent into the mixture I in the step (I), uniformly stirring, adding far infrared ceramic powder, and stirring for 40min again to obtain the finished concrete.
Preferably: the stirring speed in the second step is 100rpm, and the temperature should be controlled to be 50-70 ℃ in the stirring process. In embodiment 2 of the invention, the high-strength heat-insulating concrete comprises the following components in parts by weight: 180 parts of cement, 140 parts of water, 30 parts of water reducing agent, 45 parts of dry strength agent, 50 parts of fly ash, 15 parts of sodium sulfate, 60 parts of calcium chloride, 30 parts of anti-crack fiber agent and 80 parts of far infrared ceramic powder, wherein the preparation method of the anti-crack fiber agent comprises the following steps:
a: weighing a thickening agent, fibers, a dispersing agent and an inorganic auxiliary agent in sequence for later use;
b: and D, pouring the fibers and the inorganic auxiliary agent in the step A into a reaction kettle in sequence for carrying out constant temperature reaction, then pouring the thickening agent into the reaction kettle, continuously stirring for 15min to obtain a mixture, finally pouring the dispersing agent, continuously stirring for 30min, and standing for 5min to obtain the anti-crack fiber agent.
Preferably: the fiber is any two of polyester fiber, glass fiber, carbon fiber or steel fiber, the length of the fiber is 40mm, and the tensile strength is 800 MPa.
Preferably: the water reducing agent is an aliphatic high-efficiency water reducing agent or an amino high-efficiency water reducing agent with the molecular weight of 15000-19000.
Preferably: the preparation method of the far infrared ceramic powder comprises the following steps:
a: weighing copper oxide, titanium oxide, zinc oxide and magnesium oxide in sequence according to the weight parts for later use;
b: respectively pouring the copper oxide, the titanium oxide, the zinc oxide and the magnesium oxide in the step a into deionized water for fully dissolving to obtain a reactant solution with the concentration of 3.2M, adding 8% ammonia water for mixing, stirring for 30min, pouring into a centrifuge for filtering and washing to obtain a precipitate;
c: and (c) pouring the precipitate obtained in the step (b) into a roller dryer, drying at the temperature of 50-80 ℃, crushing by a crusher, and screening by a vibrating screen to obtain the far infrared ceramic powder with the average particle size of 25 mm.
A preparation method of high-strength heat-insulating concrete comprises the following steps:
the method comprises the following steps: sequentially adding cement, a drought strength agent, fly ash, sodium sulfate and calcium chloride into a hopper, conveying the hopper into a stirrer for mixing treatment, slowly adding water during stirring, continuously stirring for 1h, adding a water reducing agent, and stirring for 10min again to obtain a mixture I;
step two: and (3) adding an anti-crack fiber agent into the mixture I in the step (I), uniformly stirring, adding far infrared ceramic powder, and stirring for 40min again to obtain the finished concrete.
Preferably: the stirring speed in the second step is 100rpm, and the temperature should be controlled to be 50-70 ℃ in the stirring process. In embodiment 3 of the invention, the high-strength heat-insulating concrete comprises the following components in parts by weight: 190 parts of cement, 150 parts of water, 35 parts of water reducing agent, 50 parts of dry strength agent, 55 parts of fly ash, 20 parts of sodium sulfate, 70 parts of calcium chloride, 35 parts of anti-crack fiber agent and 75 parts of far infrared ceramic powder, wherein the preparation method of the anti-crack fiber agent comprises the following steps:
a: weighing a thickening agent, fibers, a dispersing agent and an inorganic auxiliary agent in sequence for later use;
b: and D, pouring the fibers and the inorganic auxiliary agent in the step A into a reaction kettle in sequence for carrying out constant temperature reaction, then pouring the thickening agent into the reaction kettle, continuously stirring for 15min to obtain a mixture, finally pouring the dispersing agent, continuously stirring for 30min, and standing for 5min to obtain the anti-crack fiber agent.
Preferably: the fiber is any two of polyester fiber, glass fiber, carbon fiber or steel fiber, the length of the fiber is 40mm, and the tensile strength is 800 MPa.
Preferably: the water reducing agent is an aliphatic high-efficiency water reducing agent or an amino high-efficiency water reducing agent with the molecular weight of 15000-19000.
Preferably: the preparation method of the far infrared ceramic powder comprises the following steps:
a: weighing copper oxide, titanium oxide, zinc oxide and magnesium oxide in sequence according to the weight parts for later use;
b: respectively pouring the copper oxide, the titanium oxide, the zinc oxide and the magnesium oxide in the step a into deionized water for fully dissolving to obtain a reactant solution with the concentration of 3.2M, adding 8% ammonia water for mixing, stirring for 30min, pouring into a centrifuge for filtering and washing to obtain a precipitate;
c: and (c) pouring the precipitate obtained in the step (b) into a roller dryer, drying at the temperature of 50-80 ℃, crushing by a crusher, and screening by a vibrating screen to obtain the far infrared ceramic powder with the average particle size of 25 mm.
A preparation method of high-strength heat-insulating concrete comprises the following steps:
the method comprises the following steps: sequentially adding cement, a drought strength agent, fly ash, sodium sulfate and calcium chloride into a hopper, conveying the hopper into a stirrer for mixing treatment, slowly adding water during stirring, continuously stirring for 1h, adding a water reducing agent, and stirring for 10min again to obtain a mixture I;
step two: and (3) adding an anti-crack fiber agent into the mixture I in the step (I), uniformly stirring, adding far infrared ceramic powder, and stirring for 40min again to obtain the finished concrete.
Preferably: the stirring speed in the second step is 100rpm, and the temperature should be controlled to be 50-70 ℃ in the stirring process.
Comparative example:
the operation of this example is as described in example 1, except that: far infrared ceramic powder and anti-crack fiber agent are not added.
In order to verify that the strength and the heat preservation effect of the concrete prepared in the document of the application are superior to those of the conventional concrete on the market, the applicant performs performance tests on the concrete in the examples 1, 2 and 3 and the comparative example, and the test results are shown in the following table:
from the above table, it can be seen that: the far infrared ceramic powder and the anti-crack fiber agent are added into the traditional concrete, so that the heat loss rate is below 20 percent, and the heat loss rate in the concrete which is not added is higher than 21, which shows that the heat preservation effect of the concrete can be obviously improved by adding the far infrared ceramic powder into the traditional concrete, the heat loss is reduced, meanwhile, after the far infrared ceramic powder and the anti-crack fiber agent are added into the traditional concrete, the compressive strength of the concrete is higher than that of the concrete which is not added, a good protection effect is achieved on buildings, the anti-crack grade is higher than that of the concrete which is not added, and the effect is more obvious.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (6)
1. The high-strength heat-insulating concrete is characterized by comprising the following components in parts by weight: 100-200 parts of cement, 80-160 parts of water, 10-40 parts of a water reducing agent, 15-55 parts of a dry strength agent, 30-60 parts of fly ash, 5-20 parts of sodium sulfate, 20-80 parts of calcium chloride, 10-40 parts of an anti-crack fiber agent and 50-90 parts of far infrared ceramic powder, wherein the preparation method of the anti-crack fiber agent comprises the following steps:
a: weighing a thickening agent, fibers, a dispersing agent and an inorganic auxiliary agent in sequence for later use;
b: and D, pouring the fibers and the inorganic auxiliary agent in the step A into a reaction kettle in sequence for carrying out constant temperature reaction, then pouring the thickening agent into the reaction kettle, continuously stirring for 15min to obtain a mixture, finally pouring the dispersing agent, continuously stirring for 30min, and standing for 5min to obtain the anti-crack fiber agent.
2. The high-strength thermal insulation concrete according to claim 1, wherein the fibers are any two of polyester fibers, glass fibers, carbon fibers or steel fibers, the length of the fibers is 40mm, and the tensile strength is 800 MPa.
3. The high-strength heat-insulating concrete as claimed in claim 1, wherein the water reducing agent is an aliphatic high-efficiency water reducing agent with molecular weight of 15000-19000 or an amino high-efficiency water reducing agent.
4. The high-strength heat-insulating concrete according to claim 1, wherein the preparation method of the far infrared ceramic powder comprises the following steps:
a: weighing copper oxide, titanium oxide, zinc oxide and magnesium oxide in sequence according to the weight parts for later use;
b: respectively pouring the copper oxide, the titanium oxide, the zinc oxide and the magnesium oxide in the step a into deionized water for fully dissolving to obtain a reactant solution with the concentration of 3.2M, adding 8% ammonia water for mixing, stirring for 30min, pouring into a centrifuge for filtering and washing to obtain a precipitate;
c: and (c) pouring the precipitate obtained in the step (b) into a roller dryer, drying at the temperature of 50-80 ℃, crushing by a crusher, and screening by a vibrating screen to obtain the far infrared ceramic powder with the average particle size of 25 mm.
5. The method for preparing high-strength thermal insulation concrete according to any one of claims 1 to 4, comprising the steps of:
the method comprises the following steps: sequentially adding cement, a drought strength agent, fly ash, sodium sulfate and calcium chloride into a hopper, conveying the hopper into a stirrer for mixing treatment, slowly adding water during stirring, continuously stirring for 1h, adding a water reducing agent, and stirring for 10min again to obtain a mixture I;
step two: and (3) adding an anti-crack fiber agent into the mixture I in the step (I), uniformly stirring, adding far infrared ceramic powder, and stirring for 40min again to obtain the finished concrete.
6. The high-strength thermal insulation concrete and the preparation method thereof according to claim 5, wherein the stirring speed in the second step is 100rpm, and the temperature during the stirring process is controlled to be 50-70 ℃.
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