Concrete siliceous density agent has the functions of moisture-proof, waterproof, anti-seepage and anti-cracking. It is mainly used in construction, municipal administration, water conservancy, bridges, etc. It has the characteristics of improving the impermeability level, reducing the porosity inside the concrete, and having obvious water reduction effect. In the long-term use process, the most common method is to directly add silica powder to the concrete as a density agent, which has low cost and convenient processing. And the advantages of the overall dense effect, but the overall service life is short during use, and the concrete has the risk of cracking, so it needs to be improved to increase the service life of the concrete and improve the long-term durability of the concrete.
Technical implementation elements:
The purpose of this technology is to provide a concrete density agent, In order to solve the problem of how to improve the durability performance and anti-cracking ability of concrete raised in the above-mentioned background technology.
In order to achieve the above purpose, this technology provides the following technical solution: a concrete density agent. The components of the concrete density agent according to the mass proportion are: silica powder 100-150 parts, fly ash 100-150 parts, stearic acid 100-200 parts, polymer film-forming agent 10-20 parts, volcanic ash 5-10 parts, cross-linking agent 1-2 parts, silicone aqueous agent 10 -20 parts, water reducing agent 10-20 parts.
Preferably, the weight ratio of the silicon powder and fly ash is 1:1.
Preferably, the fly ash is grade two or above fly ash.
Preferably, the cross-linking agent includes 1-2 parts of glycerol, 1-2 parts of alginate, and 1,4-butanediol according to mass proportion. 0.5-1 part of diglycidyl ether.
Preferably, the silicone aqueous agent is a compound composed of silicone water-soluble resin, sodium methylsilanolate and triethoxysilane after dispersion and emulsification. Tested silicone aqueous solution.
Preferably, the water-reducing agent is a lignosulfonate water-reducing agent, a naphthalene-based high-efficiency water-reducing agent or an aliphatic high-efficiency water-reducing agent. one or more.
Compared with the existing technology, the beneficial effects of this technology are:
1) This technology uses fly ash as filler and stearic acid for overall reaction on the basis of silica fume, thereby improving the durability of the dense agent during the use of concrete, and is added to the concrete and waits for the cement hardening process. , can form colloidal suspended particles, and change the original gel-to-air ratio, improving the durability and anti-seepage effect of cement;
2) This The technology adds more common raw materials for mixing and processing. The overall processing is easy, and it is convenient for direct mixing and use on construction sites and at home, avoiding the problem of excessive costs and making it easier to build and use ground-floor buildings. </p
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