A kind of concrete waterproof anti-cracking agent and preparation method thereof

Abstract

The invention discloses a concrete waterproof anti-cracking agent, which is characterized in that it is made of the following raw materials in parts by weight: 20-30 parts of surface-soluble polymer modified expansion components, 2-carboxyethyl-bis(2-hydroxyl Ethyl)‑[3‑(2,2,3,3,4,4,5,5,6,6,7,7,8,8,8‑pentadecafluorooctanoylamino)propyl]ammonium hydrogen Oxide modified rare earth oxide nanostructure fiber 3‑8 parts, chloromethyl phenethyl tris (trimethylsiloxy) silane ionized N, N'‑[1,2‑ethylenediyl bis[oxygen ( 4-fluoro-2,1-phenyl)]]bis[N-(carboxymethyl)glycine] 5-10 parts, aluminum silicate fiber 5-10 parts, waste gypsum 3-8 parts, polyacrylonitrile fiber 2 -5 servings. The invention also discloses a preparation method of the concrete waterproof and anti-cracking agent. The concrete waterproof and anti-cracking agent disclosed by the invention has less dosage, remarkable waterproof and anti-cracking effect, is not easy to age, has low preparation cost, and avoids the compatibility problem of admixtures; the concrete added with the concrete waterproof and anti-cracking agent has excellent compressive strength , Frost resistance, anti-shrinkage performance.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a concrete waterproof and anti-cracking agent and a preparation method thereof. Background technique [0002] With the advancement of urban-rural integration, various high-rise buildings, tunnels and bridges have emerged one after another, becoming a major symbol of modern urban civilization. Behind the construction of these buildings is inseparable from the application of concrete materials. Concrete material is referred to as "concrete" for short, which refers to the collective name of engineering composite materials in which aggregates are cemented into a whole by cementitious materials. Because of its rich raw materials, low price and simple production process, it is widely used in construction projects. Its performance directly affects the quality of construction projects and is the key to people's lives and property safety. one of the factors. Therefore, impr...

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Problems solved by technology

[0006] In order to overcome the defects in the prior art, the present invention provides a concrete waterproof anti-cracking agent and a preparation method thereof. The preparation method has simple process, convenient operation, low dependence on equipment, low raw material price, and is suitable for large-scale production. Great popularization and application value; the prepared concrete waterproof and anti-cracking agent has less dosage, remarkable waterproof and anti-cracking effect, not easy to age, low preparation cost, simplifies the construction process, and avoids the compatibility problem of admixtures; adding this kind of concrete waterproof Concrete with anti-cracking agent has excellent compressive strength, frost resistance and shrinkage resistance

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