Concrete anti-cracking waterproof agent and preparation method thereof
A technology of anti-cracking and waterproofing agent and concrete, which is applied in the field of construction admixtures, can solve the problems that it is not easy to meet the construction requirements, it is not easy to mix evenly, and the environmental requirements are high, so as to achieve good quality retention rate and volume retention rate, improve compactness and Water repellency, effect of improving material accumulation effect
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Embodiment 1
[0027] A concrete anti-crack waterproofing agent, which is prepared from the following raw materials in parts by weight: 100 parts of allophane powder, 40 parts of modified wollastonite powder, 14 parts of phenolic resin hollow microspheres, 15 parts of tricalcium phosphate, hexametaphosphoric acid 7 parts of sodium, 14 parts of 2-amino-2-methyl-propanol, 4 parts of sodium thiocyanate, 10 parts of diethanol monoisopropanolamine, and 13 parts of pentaerythritol.
[0028] Described, modified wollastonite powder is made by following method:
[0029] 1) Add ethylene-vinyl acetate copolymer emulsion, α-sulfo fatty acid methyl ester and deionized water into the reactor, stir and react at 25°C for 2 hours to obtain solution A;
[0030] 2) Put solution A, wollastonite powder, calcium chloride, and diethylene glycol monobutyl ether into the reactor, react at 50°C for 3 hours, cool to room temperature, filter, dry, and pass through a 100-mesh sieve after crushing. Active wollastonite p...
Embodiment 2
[0041] A concrete anti-crack waterproofing agent, which is prepared from the following raw materials in parts by weight: 100 parts of allophane powder, 30 parts of modified wollastonite powder, 18 parts of phenolic resin hollow microspheres, 20 parts of tricalcium phosphate, hexametaphosphoric acid 6 parts of sodium, 10 parts of 2-amino-2-methyl-propanol, 3 parts of sodium thiocyanate, 12 parts of diethanol monoisopropanolamine, and 15 parts of pentaerythritol.
[0042] Described, modified wollastonite powder is made by following method:
[0043] 1) Add ethylene-vinyl acetate copolymer emulsion, α-sulfo fatty acid methyl ester and deionized water into the reactor, stir and react at 20°C for 3 hours to obtain solution A;
[0044] 2) Put solution A, wollastonite powder, calcium chloride, and diethylene glycol monobutyl ether into the reactor, react at 50°C for 2 hours, cool to room temperature, filter, dry, and pass through a 100-mesh sieve after crushing. Active wollastonite p...
Embodiment 3
[0055] A concrete anti-crack waterproofing agent, which is prepared from the following raw materials in parts by weight: 100 parts of allophane powder, 35 parts of modified wollastonite powder, 16 parts of phenolic resin hollow microspheres, 18 parts of tricalcium phosphate, hexametaphosphoric acid 7 parts of sodium, 12 parts of 2-amino-2-methyl-propanol, 4 parts of sodium thiocyanate, 11 parts of diethanol monoisopropanolamine, and 14 parts of pentaerythritol.
[0056] Described, modified wollastonite powder is made by following method:
[0057] 1) Add ethylene-vinyl acetate copolymer emulsion, α-sulfo fatty acid methyl ester and deionized water into the reactor, stir and react at 23°C for 2.5 hours to obtain solution A;
[0058] 2) Put solution A, wollastonite powder, calcium chloride, and diethylene glycol monobutyl ether into the reactor, react at 50°C for 2.5 hours, cool to room temperature, filter, dry, and pass through a 100-mesh sieve after crushing to obtain Modified...
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