Modified cement blending material and concrete used for grouting wall and prepared by the same

Abstract

The invention relates to modified cement blending material used for preparation of concrete used for a grouting wall, and the concrete used for the grouting wall and prepared by the modified cement blending material. The modified cement blending material comprises, by weight, 40-60% of cement, 20-40% of sand, 15-25% of inorganic filler, 0.5-1% of organic fibers, 0.4-1% of redispersible rubber powder, 0.5-1% of thickener, and 0.4-1% of water reducer. The concrete used for the grouting wall and prepared by the modified cement blending material, polyphenyl granules and water has the advantages of being good in flowability, cohesiveness, and extended degree, low in contractility, light in weight, strong in intensity, good in heat preservation and sound insulation, and the like.

Description

technical field [0001] The invention relates to a modified cement mixture, in particular to a modified cement mixture for preparing concrete for grouting walls and the concrete for grouting walls prepared therefrom. Background technique [0002] The industrialization of housing is to use industrialized production methods to build industrial and civil buildings, and the application of new wall materials is one of its important themes. The perfusion wall is a new type of wall material with excellent performance, and the polystyrene particle light aggregate concrete is one of the key technologies restricting the application of the perfusion wall. [0003] At present, there are very few polyphenylene particle light aggregate concrete used for pouring walls in the market. In the patent fiber cement board grouting wall and its construction method (patent number: 200710000553.7), a kind of polystyrene particle light aggregate concrete for pouring walls is mentioned. The grouting m...

AI Technical Summary

Problems solved by technology

Due to the lack of modification of organic admixtures, polyphenylene particles are easy to float, causing concrete segregation; at the same time, there is no fiber added to resist cracking, and the concrete shrinkage cracks are serious

[0004] There are three problems in the rubber powder polyphenylene particles that can be used as polystyrene particle light aggregate concrete for pouring walls in other markets: first, the concrete has poor workability and too high viscosity, which is not suitable for pouring; second, the concrete bulk density is too low, The strength cannot meet the requirements of the pouring wall; the third is that the amount of cement and redispersible rubber powder is too large, and the cost is high

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