Additive for pervious concrete and application thereof
A permeable concrete and admixture technology, which is applied in the field of concrete admixtures, can solve the problems of low strength, poor work performance, and poor durability in the later stage, and achieve the effects of improving fluidity, preventing drying and condensation, and improving durability and strength in the later stage
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[0013] Example 1: (1) According to mass ratio polyethylene glycol: butyl methacrylate: methyl methacrylate: alkenyl ether-based polyoxyethylene: maleic anhydride: water = 2:2:5:25:5: 61. Mix the components in a proportion and react at 70~100℃ until a yellow-brown viscous liquid appears to prepare a polycarboxylic acid water-reducing agent; (2) The mass ratio of sodium lauryl sulfate: stearic acid: sulfonic acid Melamine=75:15:10 ratio and mix the components to prepare air-entraining agent; (3) According to the mass ratio of polycarboxylic acid water reducing agent: aminotrimethyl phosphoric acid: hydroxymethyl cellulose ether ether: air-entraining Agent: water=40:2.5:1:0.5:56 in proportions of the components, mixed and stirred uniformly to obtain an admixture for permeable concrete. When the concrete is prepared according to the C25 permeable concrete construction mix ratio, the amount of the above-mentioned admixture is 1.8% of the mass of the cementitious material. The perfor...
Example Embodiment
[0015] Example 2: (1) According to the mass ratio polyethylene glycol: butyl methacrylate: methyl methacrylate: alkenyl ether-based polyoxyethylene: maleic anhydride: water = 2:2:5:25:5: 61. Mix the components in a proportion and react at 70~100℃ until a yellow-brown viscous liquid appears to prepare a polycarboxylic acid water-reducing agent; (2) The mass ratio of sodium lauryl sulfate: stearic acid: sulfonic acid Melamine=80:10:10 ratio and mix the components to prepare air-entraining agent; (3) According to the mass ratio of polycarboxylic acid water reducing agent: phosphinobutane tricarboxylic acid: polyacrylamide: air-entraining agent: water =48:2.3:0.9:0.8:48 proportion of each component, mixing and stirring uniformly, to obtain the admixture for permeable concrete. When preparing concrete according to the C25 permeable concrete construction mix ratio, the amount of the above-mentioned admixture is 2.0% of the mass of the cementitious material. The performance test resul...
Example Embodiment
[0017] Example 3: (1) According to the mass ratio polyethylene glycol: butyl methacrylate: methyl methacrylate: alkenyl ether-based polyoxyethylene: maleic anhydride: water = 2:2:5:25:5: 61. Mix the components in a proportion and react at 70~100℃ until a yellow-brown viscous liquid appears to prepare a polycarboxylic acid water-reducing agent; (2) The mass ratio of sodium lauryl sulfate: stearic acid: sulfonic acid Melamine=78:12:12 to mix the components to prepare air-entraining agent; (3) According to the mass ratio of polycarboxylic acid water reducer: phosphinobutane tricarboxylic acid: starch: air-entraining agent: water = 46 2:2.3:1:0.8:48 ratio of each component, mixing and stirring uniformly, to obtain an admixture for permeable concrete. When preparing concrete according to the C25 permeable concrete construction mix ratio, the amount of the above-mentioned admixture is 2.0% of the mass of the cementitious material. The performance test results of the above-mentioned a...
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