CN111499409A - Precast concrete bone exposing agent for fabricated building and preparation method thereof - Google Patents
Precast concrete bone exposing agent for fabricated building and preparation method thereof Download PDFInfo
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- CN111499409A CN111499409A CN202010336516.9A CN202010336516A CN111499409A CN 111499409 A CN111499409 A CN 111499409A CN 202010336516 A CN202010336516 A CN 202010336516A CN 111499409 A CN111499409 A CN 111499409A
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- slump retaining
- polycarboxylic acid
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract 13
- 239000011178 precast concrete Substances 0.000 title claims abstract 11
- 238000002360 preparation method Methods 0.000 title 1
- 239000003795 chemical substances by application Substances 0.000 claims abstract 25
- 239000002253 acid Substances 0.000 claims abstract 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 13
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract 12
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract 9
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract 9
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims abstract 7
- HFCUBKYHMMPGBY-UHFFFAOYSA-N 2-methoxyethyl prop-2-enoate Chemical compound COCCOC(=O)C=C HFCUBKYHMMPGBY-UHFFFAOYSA-N 0.000 claims abstract 7
- 239000000176 sodium gluconate Substances 0.000 claims abstract 7
- 229940005574 sodium gluconate Drugs 0.000 claims abstract 7
- 235000012207 sodium gluconate Nutrition 0.000 claims abstract 7
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract 6
- JHUFGBSGINLPOW-UHFFFAOYSA-N 3-chloro-4-(trifluoromethoxy)benzoyl cyanide Chemical compound FC(F)(F)OC1=CC=C(C(=O)C#N)C=C1Cl JHUFGBSGINLPOW-UHFFFAOYSA-N 0.000 claims abstract 6
- 229910019142 PO4 Inorganic materials 0.000 claims abstract 6
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract 6
- 239000010452 phosphate Substances 0.000 claims abstract 6
- 239000002994 raw material Substances 0.000 claims abstract 6
- DCZBARPUZJWKTQ-UHFFFAOYSA-L O.O.S(=O)([O-])S(=O)[O-].[Na+].C=O.[Na+] Chemical compound O.O.S(=O)([O-])S(=O)[O-].[Na+].C=O.[Na+] DCZBARPUZJWKTQ-UHFFFAOYSA-L 0.000 claims abstract 5
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims 3
- 238000006243 chemical reaction Methods 0.000 claims 2
- 238000000034 method Methods 0.000 claims 2
- 238000003756 stirring Methods 0.000 claims 2
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 claims 1
- SVONRAPFKPVNKG-UHFFFAOYSA-N 2-ethoxyethyl acetate Chemical compound CCOCCOC(C)=O SVONRAPFKPVNKG-UHFFFAOYSA-N 0.000 claims 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims 1
- 230000032050 esterification Effects 0.000 claims 1
- 238000005886 esterification reaction Methods 0.000 claims 1
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 claims 1
- 230000033116 oxidation-reduction process Effects 0.000 claims 1
- 239000000376 reactant Substances 0.000 claims 1
- 229940017704 sodium formaldehyde sulfoxylate dihydrate Drugs 0.000 claims 1
- UCWBKJOCRGQBNW-UHFFFAOYSA-M sodium;hydroxymethanesulfinate;dihydrate Chemical compound O.O.[Na+].OCS([O-])=O UCWBKJOCRGQBNW-UHFFFAOYSA-M 0.000 claims 1
- 239000004567 concrete Substances 0.000 abstract 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000007774 longterm Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 231100000989 no adverse effect Toxicity 0.000 abstract 1
- 230000002195 synergetic effect Effects 0.000 abstract 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/65—Coating or impregnation with inorganic materials
- C04B41/67—Phosphates
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
- C04B41/5048—Phosphates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/062—Polyethers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a precast concrete bone exposing agent for an assembly type building, which comprises the following components in percentage by weight: 30-40 parts of 40% polycarboxylic acid slump retaining agent, 20-30 parts of sodium gluconate, 5-15 parts of phosphate and 30-50 parts of water; the 40% concentration polycarboxylic acid slump retaining agent is prepared from the following raw materials in percentage by weight: 20-35 parts of macromonomer polyethylene glycol monomethyl ether acrylate, 10-15 parts of acrylic acid, 3-8 parts of maleic anhydride, 2-5 parts of sodium allylsulfonate, 2-6 parts of sodium formaldehyde hydrosulfite dihydrate, 2-6 parts of hydrogen peroxide and the balance of water. The invention has the characteristics of small slump loss and good workability through the synergistic effect of the slump retaining agent and the sodium gluconate, the bone exposing agent only can delay the final setting time of the concrete, cannot damage the setting and long-term strength of the concrete, has no adverse effect on the connection of a reinforcing steel bar and the concrete, can also be used for manufacturing a concrete decorative surface, and can control the exposed bone depth of the precast concrete for the assembly type building by controlling the dosage of the bone exposing agent so as to achieve the effect of a designed device.
Description
Technical Field
The invention relates to the technical field of building engineering, in particular to a precast concrete bone exposing agent for an assembly type building and a preparation method thereof.
Background
The exposed aggregate concrete technology is a key technology which can connect new and old concrete into a whole. Only when the coarse aggregate is exposed out of the concrete to form a naturally graded coarse surface, the mortar in the newly poured concrete can fully wrap the aggregate in the old concrete, so that the two concretes are tightly connected together, and the performance of the joint work is ensured.
The bone exposing agent is an additive capable of keeping rough surfaces exposed when concrete is washed by water. The traditional bone exposing agent is complex to prepare, and the requirements on the operation process are high due to the fact that toxic and harmful substances are used.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a prefabricated concrete bone exposing agent for an assembly type building and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the prefabricated concrete bone exposing agent for the fabricated building comprises the following components in percentage by weight: 30-40 parts of 40% polycarboxylic acid slump retaining agent, 20-30 parts of sodium gluconate, 5-15 parts of phosphate and 30-50 parts of water;
the 40% concentration polycarboxylic acid slump retaining agent is prepared from the following raw materials in percentage by weight:
20-35 parts of macromonomer polyethylene glycol monomethyl ether acrylate, 10-15 parts of acrylic acid, 3-8 parts of maleic anhydride, 2-5 parts of sodium allylsulfonate, 2-6 parts of sodium formaldehyde hydrosulfite dihydrate, 2-6 parts of hydrogen peroxide and the balance of water.
Preferably, the preparation method of the 40% concentration polycarboxylic acid slump retaining agent is as follows:
(1) adding macromonomer polyethylene glycol monomethyl ether acrylate, maleic anhydride, sodium allylsulfonate and a proper amount of water into a reaction container, and fully dissolving the raw materials in the water to prepare solution A;
(2) mixing sodium formaldehyde sulfoxylate dihydrate with hydrogen peroxide, and controlling the reaction temperature to be 50-60 ℃ to prepare solution B;
(3) adding the solution B into the solution A, and carrying out oxidation reduction for 10-12 h;
(4) and (4) dropwise adding a proper amount of acrylic acid into the step (3), and adjusting the pH value of the reactant to 5-7 to obtain the 40% concentration polycarboxylic acid slump retaining agent.
Preferably, the macromonomer polyethylene glycol monomethyl ether acrylate is polyethylene glycol monoethyl ether methacrylate macromonomer, polyethylene glycol monoethyl ether acetate is synthesized by catalyzing ethylene oxide and ethyl acetate, and then the polyethylene glycol monoethyl ether acetate and ethyl methacrylate are esterified to obtain the polyethylene glycol monomethyl ether acrylate.
Preferably, the prefabricated concrete bone exposing agent for the fabricated building comprises the following components in percentage by weight: 30 parts of 40% polycarboxylic acid slump retaining agent, 20 parts of sodium gluconate, 5 parts of phosphate and 30 parts of water;
the 40% concentration polycarboxylic acid slump retaining agent is prepared from the following raw materials in percentage by weight:
20 parts of macromonomer polyethylene glycol monomethyl ether acrylate, 10 parts of acrylic acid, 3 parts of maleic anhydride, 2 parts of sodium allylsulfonate, 2 parts of sodium formaldehyde hydrosulfite dihydrate, 2 parts of hydrogen peroxide and the balance of water.
Preferably, the prefabricated concrete bone exposing agent for the fabricated building comprises the following components in percentage by weight: 35 parts of 40% polycarboxylic acid slump retaining agent, 25 parts of sodium gluconate, 10 parts of phosphate and 40 parts of water;
the 40% concentration polycarboxylic acid slump retaining agent is prepared from the following raw materials in percentage by weight:
28 parts of macromonomer polyethylene glycol monomethyl ether acrylate, 12 parts of acrylic acid, 5 parts of maleic anhydride, 3 parts of sodium allylsulfonate, 4 parts of sodium formaldehyde hydrosulfite dihydrate, 4 parts of hydrogen peroxide and the balance of water.
Preferably, the prefabricated concrete bone exposing agent for the fabricated building comprises the following components in percentage by weight: 40 parts of 40% polycarboxylic acid slump retaining agent, 30 parts of sodium gluconate, 15 parts of phosphate and 50 parts of water;
the 40% concentration polycarboxylic acid slump retaining agent is prepared from the following raw materials in percentage by weight:
35 parts of macromonomer polyethylene glycol monomethyl ether acrylate, 15 parts of acrylic acid, 8 parts of maleic anhydride, 5 parts of sodium allylsulfonate, 6 parts of sodium formaldehyde hydrosulfite dihydrate, 6 parts of hydrogen peroxide and the balance of water.
Preferably, the preparation method of the precast concrete bone exposing agent for the fabricated building comprises the following steps: mixing the 40% polycarboxylic acid slump retaining agent, sodium gluconate and water, stirring at high speed, adding phosphate, and stirring for 2-3 h.
Compared with the prior art, the invention has the beneficial effects that:
the invention has the characteristics of small slump loss and good workability through the synergistic effect of the slump retaining agent and the sodium gluconate, the bone exposing agent only can delay the final setting time of the concrete, cannot damage the setting and long-term strength of the concrete, and has no adverse effect on the connection of a reinforcing steel bar and the concrete, and meanwhile, the bone exposing agent can also be used for manufacturing a concrete decorative surface, and the bone exposing depth of the precast concrete for the assembly type building is controlled by controlling the dosage of the bone exposing agent, so that the designed device effect is achieved.
Detailed Description
The technical solutions of the present invention are described below clearly and completely by using specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The prefabricated concrete bone exposing agent for the fabricated building comprises the following components in percentage by weight: 30 parts of 40% polycarboxylic acid slump retaining agent, 20 parts of sodium gluconate, 5 parts of phosphate and 30 parts of water;
the preparation method of the 40% concentration polycarboxylic acid slump retaining agent comprises the following steps:
(1) adding 20 parts of macromonomer polyethylene glycol monomethyl ether acrylate, 3 parts of maleic anhydride, 2 parts of sodium allylsulfonate and a proper amount of water into a reaction vessel, and fully dissolving the raw materials in the water to prepare solution A;
(2) mixing 2 parts of sodium formaldehyde sulfoxylate dihydrate and 2 parts of hydrogen peroxide, and controlling the reaction temperature at 50 ℃ to prepare a solution B;
(3) adding the solution B into the solution A, and carrying out oxidation reduction for 10 hours;
(4) and (4) dropwise adding 10 parts of acrylic acid into the step (3), and adjusting the pH value of the reactant to 5 to obtain the 40% polycarboxylic slump retaining agent.
The preparation method of the precast concrete bone exposing agent for the fabricated building comprises the following steps: mixing the 40% polycarboxylic acid slump retaining agent, sodium gluconate and water, stirring at high speed, adding phosphate, and stirring for 2 h.
Example 2
The prefabricated concrete bone exposing agent for the fabricated building comprises the following components in percentage by weight: 35 parts of 40% polycarboxylic acid slump retaining agent, 25 parts of sodium gluconate, 10 parts of phosphate and 40 parts of water;
the preparation method of the 40% concentration polycarboxylic acid slump retaining agent comprises the following steps:
(1) adding 28 parts of macromonomer polyethylene glycol monomethyl ether acrylate, 5 parts of maleic anhydride, 3 parts of sodium allylsulfonate and a proper amount of water into a reaction vessel, and fully dissolving the raw materials in the water to prepare solution A;
(2) mixing 4 parts of sodium formaldehyde sulfoxylate dihydrate and 4 parts of hydrogen peroxide, and controlling the reaction temperature to be 55 ℃ to prepare a solution B;
(3) adding the solution B into the solution A, and carrying out oxidation reduction for 11 h;
(4) and (4) dropwise adding 12 parts of acrylic acid into the step (3), and adjusting the pH value of the reactant to 7 to obtain the 40% polycarboxylic slump retaining agent.
The preparation method of the precast concrete bone exposing agent for the fabricated building comprises the following steps: mixing the 40% polycarboxylic acid slump retaining agent, sodium gluconate and water, stirring at high speed, adding phosphate, and stirring for 2.5 h.
Example 3
The prefabricated concrete bone exposing agent for the fabricated building comprises the following components in percentage by weight: 40 parts of 40% polycarboxylic acid slump retaining agent, 30 parts of sodium gluconate, 15 parts of phosphate and 50 parts of water;
the preparation method of the 40% concentration polycarboxylic acid slump retaining agent comprises the following steps:
(1) adding 35 parts of macromonomer polyethylene glycol monomethyl ether acrylate, 8 parts of maleic anhydride, 5 parts of sodium allylsulfonate and a proper amount of water into a reaction vessel, and fully dissolving the raw materials in the water to prepare solution A;
(2) mixing 6 parts of sodium formaldehyde sulfoxylate dihydrate and 6 parts of hydrogen peroxide, and controlling the reaction temperature at 60 ℃ to prepare a solution B;
(3) adding the solution B into the solution A, and carrying out oxidation reduction for 12 h;
(4) and (4) dropwise adding 15 parts of acrylic acid into the step (3), and adjusting the pH value of the reactant to 7 to obtain the 40% polycarboxylic slump retaining agent.
The preparation method of the precast concrete bone exposing agent for the fabricated building comprises the following steps: mixing the 40% polycarboxylic acid slump retaining agent, sodium gluconate and water, stirring at high speed, adding phosphate, and stirring for 3h again to obtain the slump retaining agent.
The macromonomer polyethylene glycol monomethyl ether acrylate in the above embodiment is polyethylene glycol monoethyl ether methacrylate macromonomer, and is obtained by synthesizing polyethylene glycol monoethyl ether acetate through catalysis of ethylene oxide and ethyl acetate, and then esterifying the polyethylene glycol monoethyl ether acetate and ethyl methacrylate.
When the bone exposing agent is used, the bone exposing agent is uniformly sprayed on the upper surface of concrete after an initial bleeding layer of the concrete is evaporated until the surface of the concrete is completely covered by the agent, the spraying amount is 0.2-0.4 liter/square meter, the water washing time is 6-8 hours after the agent is sprayed, and the water washing time and the dosage can be specifically selected according to the required bone exposing depth.
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 able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (7)
1. The precast concrete bone exposing agent for the fabricated building is characterized by comprising the following components in percentage by weight: 30-40 parts of 40% polycarboxylic acid slump retaining agent, 20-30 parts of sodium gluconate, 5-15 parts of phosphate and 30-50 parts of water;
the 40% concentration polycarboxylic acid slump retaining agent is prepared from the following raw materials in percentage by weight:
20-35 parts of macromonomer polyethylene glycol monomethyl ether acrylate, 10-15 parts of acrylic acid, 3-8 parts of maleic anhydride, 2-5 parts of sodium allylsulfonate, 2-6 parts of sodium formaldehyde hydrosulfite dihydrate, 2-6 parts of hydrogen peroxide and the balance of water.
2. The precast concrete bone exposing agent for the fabricated building according to claim 1, wherein the 40% concentration polycarboxylic acid slump retaining agent is prepared by the following method:
(1) adding macromonomer polyethylene glycol monomethyl ether acrylate, maleic anhydride, sodium allylsulfonate and a proper amount of water into a reaction container, and fully dissolving the raw materials in the water to prepare solution A;
(2) mixing sodium formaldehyde sulfoxylate dihydrate with hydrogen peroxide, and controlling the reaction temperature to be 50-60 ℃ to prepare solution B;
(3) adding the solution B into the solution A, and carrying out oxidation reduction for 10-12 h;
(4) and (4) dropwise adding a proper amount of acrylic acid into the step (3), and adjusting the pH value of the reactant to 5-7 to obtain the 40% concentration polycarboxylic acid slump retaining agent.
3. The precast concrete bone exposing agent for the fabricated building according to claim 1, wherein the macromonomer polyethylene glycol monomethyl ether acrylate is polyethylene glycol monoethyl ether methacrylate macromonomer, polyethylene glycol monoethyl ether acetate is synthesized by catalyzing ethylene oxide and ethyl acetate, and then esterification is performed with ethyl methacrylate to obtain the precast concrete bone exposing agent.
4. The precast concrete bone exposing agent for the fabricated building as claimed in claim 1, which comprises the following components in percentage by weight: 30 parts of 40% polycarboxylic acid slump retaining agent, 20 parts of sodium gluconate, 5 parts of phosphate and 30 parts of water;
the 40% concentration polycarboxylic acid slump retaining agent is prepared from the following raw materials in percentage by weight:
20 parts of macromonomer polyethylene glycol monomethyl ether acrylate, 10 parts of acrylic acid, 3 parts of maleic anhydride, 2 parts of sodium allylsulfonate, 2 parts of sodium formaldehyde hydrosulfite dihydrate, 2 parts of hydrogen peroxide and the balance of water.
5. The precast concrete bone exposing agent for the fabricated building as claimed in claim 1, which comprises the following components in percentage by weight: 35 parts of 40% polycarboxylic acid slump retaining agent, 25 parts of sodium gluconate, 10 parts of phosphate and 40 parts of water;
the 40% concentration polycarboxylic acid slump retaining agent is prepared from the following raw materials in percentage by weight:
28 parts of macromonomer polyethylene glycol monomethyl ether acrylate, 12 parts of acrylic acid, 5 parts of maleic anhydride, 3 parts of sodium allylsulfonate, 4 parts of sodium formaldehyde hydrosulfite dihydrate, 4 parts of hydrogen peroxide and the balance of water.
6. The precast concrete bone exposing agent for the fabricated building as claimed in claim 1, which comprises the following components in percentage by weight: 40 parts of 40% polycarboxylic acid slump retaining agent, 30 parts of sodium gluconate, 15 parts of phosphate and 50 parts of water;
the 40% concentration polycarboxylic acid slump retaining agent is prepared from the following raw materials in percentage by weight:
35 parts of macromonomer polyethylene glycol monomethyl ether acrylate, 15 parts of acrylic acid, 8 parts of maleic anhydride, 5 parts of sodium allylsulfonate, 6 parts of sodium formaldehyde hydrosulfite dihydrate, 6 parts of hydrogen peroxide and the balance of water.
7. The method for preparing the precast concrete bone exposing agent for the fabricated building according to any one of claims 1 to 6, comprising: mixing the 40% polycarboxylic acid slump retaining agent, sodium gluconate and water, stirring at high speed, adding phosphate, and stirring for 2-3 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010336516.9A CN111499409A (en) | 2020-04-24 | 2020-04-24 | Precast concrete bone exposing agent for fabricated building and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010336516.9A CN111499409A (en) | 2020-04-24 | 2020-04-24 | Precast concrete bone exposing agent for fabricated building and preparation method thereof |
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| CN105837762A (en) * | 2016-05-30 | 2016-08-10 | 江苏名和集团有限公司 | Polycarboxylate superplasticizer synthesized at normal temperature and preparation method thereof |
| CN106279561A (en) * | 2016-08-09 | 2017-01-04 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of viscosity reduction type poly carboxylic acid series water reducer for high performance concrete |
| CN109336452A (en) * | 2018-11-20 | 2019-02-15 | 福建建工建材科技开发有限公司 | A kind of surface retarders for concrete prefabricated element |
| CN110510913A (en) * | 2019-08-21 | 2019-11-29 | 安徽省高迪环保股份有限公司 | A kind of preparation method of the undisguised agent of prefabricated components concrete surface |
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