High-strength anti-crack foam cement
A foam cement, high-strength technology, applied in the field of cement, can solve the problems of low strength and crack resistance, achieve the effect of increasing strength and crack resistance, avoiding mold collapse, and increasing stability
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Embodiment 1
[0018] A kind of high-strength anti-cracking foamed cement, its raw material comprises by weight: 100 parts of high-strength sulfoaluminate cement, 15 parts of volcanic ash, 2.5 parts of foaming agent, 0.013 part of sodium tripolyphosphate, 0.7 part of foam stabilizer, sodium carbonate 0.6 parts, 0.07 parts of naphthalene-based water reducer, 3 parts of silicone water repellent, 5 parts of reinforcing agent, and 52 parts of water, wherein the reinforcing agent is nano-silica, modified polypropylene fiber, and VAE emulsion.
Embodiment 2
[0020] A high-strength crack-resistant foamed cement, the raw materials of which include by weight: 100 parts of high-strength sulfoaluminate cement, 10 parts of pozzolan, 3 parts of foaming agent, 0.01 part of sodium tripolyphosphate, 0.8 part of foam stabilizer, sodium carbonate 0.5 parts, 0.1 parts of naphthalene-based water-reducing agent, 2 parts of silicone waterproofing agent, 6 parts of reinforcing agent, 50 parts of water, wherein the reinforcing agent is nano-silica, modified polypropylene fiber with a length of 6mm, and VAE emulsion, wherein , the weight ratio of nano-silica, modified polypropylene fiber, and VAE emulsion is 0.5:2:1.5;
[0021] During the preparation of the modified polypropylene fiber, the polypropylene fiber was swelled in toluene for 2 hours, then moved to a nitrogen atmosphere, added benzoyl peroxide, heated to 70°C, kept stirring for 90 minutes, and the toluene was removed by rotary evaporation. Add an aqueous solution with a concentration of 0...
Embodiment 3
[0023] A high-strength anti-cracking foamed cement, the raw materials of which include by weight: 100 parts of high-strength sulfoaluminate cement, 20 parts of pozzolan, 2 parts of foaming agent, 0.015 part of sodium tripolyphosphate, 0.6 part of foam stabilizer, sodium carbonate 0.7 parts, 0.05 parts of naphthalene-based water-reducing agent, 4 parts of silicone waterproofing agent, 4 parts of reinforcing agent, 55 parts of water, wherein the reinforcing agent is nano-silica, modified polypropylene fiber with a length of 4 mm, and VAE emulsion. , the weight ratio of nano-silica, modified polypropylene fiber, and VAE emulsion is 1:1:3;
[0024] During the preparation of the modified polypropylene fiber, the polypropylene fiber was swelled in toluene for 1 hour, then moved to a nitrogen atmosphere, added benzoyl peroxide, heated to 80°C, kept stirring for 60 minutes, and the toluene was removed by rotary evaporation. Add an aqueous solution with a concentration of 1mol / l maleic...
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