Anti-collapse high-strength concrete
A high-strength concrete and anti-collapse technology, applied in the field of building materials, can solve the problems of single and easy-to-collapse concrete performance, and achieve the effects of reducing collapse, improving compressive strength, and excellent comprehensive performance
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preparation example Construction
[0012] The preparation method of anti-collapse concrete of the present invention is as follows:
[0013] Step 1: In parts by weight, weigh 45-55 parts of polycarboxylate water reducer, 15-25 parts of cellulose grafted chitosan, 20-30 parts of fly ash, and 5-10 parts of silane coupling agent. 2-5 parts of polyvinylpyrrolidone, 2-6 parts of silicon carbide, 5-10 parts of expanded perlite powder, and 2-8 parts of gelatin powder are mixed evenly to prepare the anti-slump additive.
[0014] Step 2: In parts by weight, weigh 400-500 parts of gravel, 200-250 parts of sand, 100-150 parts of cement, 20-40 parts of basalt fiber, 15-30 parts of aluminum silicate fiber, and grind into fine powder 50-100 parts of slag, 20-40 parts of anti-slump additives, add water and stir evenly to prepare a slurry, pour it into a mold, and then maintain it in a humid environment of 15-25°C for 7-10 days to obtain high-strength anti-slump concrete.
Embodiment 1
[0020] In parts by weight, weigh 45 parts of polycarboxylate-based water reducer, 25 parts of cellulose-grafted chitosan, 20 parts of fly ash, 5 parts of silane coupling agent, 2 parts of polyvinylpyrrolidone, and 4 parts of silicon carbide. 5 parts, 5 parts of expanded perlite powder, and 5 parts of gelatin powder are mixed uniformly to prepare anti-slump additives;
[0021] In parts by weight, weigh 400 parts of gravel, 220 parts of sand, 150 parts of cement, 20 parts of basalt fiber, 20 parts of aluminum silicate fiber, 80 parts of slag ground into fine powder, 30 parts of anti-slump additive, add water Stir evenly to prepare a slurry, pour it into a mold, and then maintain it in a humid environment of 15°C for 10 days to obtain a collapse-resistant high-strength concrete.
Embodiment 2
[0023] In parts by weight, weigh 55 parts of polycarboxylic acid-based water reducer, 15 parts of cellulose grafted chitosan, 30 parts of fly ash, 8 parts of silane coupling agent, 3 parts of polyvinylpyrrolidone, and 2 parts of silicon carbide. 10 parts of expanded perlite powder and 2 parts of gelatin powder were mixed evenly to prepare anti-slump additives.
[0024] In parts by weight, weigh 500 parts of gravel, 200 parts of sand, 100 parts of cement, 40 parts of basalt fiber, 30 parts of aluminum silicate fiber, 50 parts of slag ground into fine powder, 20 parts of anti-slump additive, add water Stir evenly to prepare a slurry, pour it into a mold, and then maintain it in a humid environment of 25°C for 7 days to obtain a collapse-resistant high-strength concrete.
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Abstract
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