Water-permeable foam concrete and preparation method thereof

Abstract

The invention discloses water-permeable foam concrete which is prepared from the following main raw materials: cement, super-fine sand, water, admixtures, foams, fibers, cellulose ether and a water reducer. According to the water-permeable foam concrete, the crude fibers with larger size are doped into a foam concrete matrix, so that foam pores of foam concrete form a communication channel taking the fibers as guide pipes firstly; meanwhile, the average pore size of the foam concrete is increased by decreasing the bubble density in a blending process of the foam concrete, so that the foam pores and the crude fibers form better adaptability; the foam concrete shows better water permeability performance and use performance, so that the problem that the water permeable rate of the conventional foam concrete is low is solved; in addition, involved raw materials are low in cost, and a preparation method is simple, therefore, the water-permeable foam concrete is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a water-permeable foam concrete with a water-retaining function and a preparation method thereof. Background technique [0002] In recent years, many cities have faced many rainwater problems such as frequent waterlogging, runoff pollution, massive loss of rainwater resources, and ecological environment damage. The impermeable pavement used in the city is one of the important causes of urban waterlogging. When heavy rain occurs, the rainwater cannot penetrate naturally, but quickly forms surface runoff and flows to the low-lying areas. Due to the limitation of the drainage capacity of underground drainage pipes, the low-lying areas of some large cities in my country have formed a strange circle of "every heavy rain will flood the areas". Traditional impermeable pavements have brought a series of problems to the city, which are mainly manifested in the following aspe...

AI Technical Summary

Problems solved by technology

In the entire permeable pavement, the surface layer is generally high-strength permeable concrete and permeable bricks, while the base material is mostly graded gravel and other materials with low strength and low modulus. On the one hand, it is difficult to provide effective support for the pavement structure On the other hand, graded crushed stone can only play the role of water permeability, and it is difficult to meet the technical requirements of both water retention and water permeability for sponge cities

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