A pumping concrete mixed with low-quality recycled micropowder and low-quality recycled aggregate

Abstract

The invention provides pump concrete doped with low-quality recycled micropowder and low-quality recycled aggregate, and belongs to the field of building materials. The pump concrete is composed of the following raw materials including cement, the low-quality recycled micropowder, slag powder, fly ash, mixed fine aggregate, mixed coarse aggregate, a compound pumping agent and water, wherein the mixed fine aggregate is composed of low-quality recycled fine aggregate and common fine aggregate; the mixed coarse aggregate is composed of low-quality recycled coarse aggregate and common coarse aggregate; and the compound pumping agent comprises a salt of sulfonated polystyrene-acrylic acid copolymer and a salt. The pump concrete has the characteristics of good work performance and excellent mechanical properties and durability, and can be pumped easily.

Description

technical field [0001] The invention relates to a pumping concrete, in particular to a pumping concrete mixed with low-quality recycled micropowder and low-quality recycled aggregate, and belongs to the field of construction waste recycling and building materials recycling. Background technique [0002] With the rapid development of the construction industry, the demand for sand and gravel resources is also increasing, which requires a lot of quarrying and sand washing, which seriously damages the natural and vegetation environment. In recent years, high-quality sand and gravel resources have been exhausted in many areas of our country, and we must rely on purchasing methods from surrounding areas or long-distance transportation, which increases construction costs. At the same time, the discharge of construction waste is increasing day by day. According to rough statistics on the loss of building construction materials such as brick-concrete structures, cast-in-place struct...

AI Technical Summary

Problems solved by technology

Especially for brick recycled aggregate and brick recycled fine powder, because its particles are weaker, its water absorption rate is significantly higher than that of cement stone recycled aggregate and cement stone recycled fine powder, and its activity is low, it belongs to low-quality recycled aggregate and low-quality recycled fine powder , in the prior art, such low-quality recycled aggregates and low-quality recycled fine powder are discarded, resulting in construction waste being piled up everywhere and occupying land

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