Recycled aggregate type permeable ecological concrete and preparation method thereof

Abstract

The invention discloses recycled aggregate type permeable ecological concrete and a preparation method thereof. The concrete comprises, by weight, 1350-1450 parts of recycled aggregate, 200-250 parts of recycled fine aggregate, 250-300 parts of cement, 110-130 parts of water and 5-7 parts of admixtures which are stirred and subjected to pouring forming. The formed ecological concrete is provided with pores in crunchy rice candy shapes and communicated continuously, the effective porosity is 12-15%, the compressive strength is 15-20MPa, and the permeation coefficient is 30-50mm / s. According to the concrete and the method, construction solid wastes are used for replacing natural gravels to prepare the recycled aggregate, not only the construction solid wastes are reused, but also utilization of non-renewable resources such as the natural gravels is reduced, the cost of the permeable ecological concrete is reduced, and resource utilization of the construction solid wastes is achieved.

Description

technical field [0001] The invention relates to a building material and its application, in particular to a recycled aggregate type permeable ecological concrete and its preparation process. Background technique [0002] In recent years, with the rapid development of urban reconstruction and infrastructure expansion in the world, the amount of construction solid waste generated is increasing, which has brought many negative impacts on human life and the environment. For the purpose of protecting natural resources and ecological environment, many countries in the world have conducted a lot of research on the recycling of construction solid waste, which has reached the application stage in foreign countries. However, due to the late start in my country, the research on recycled concrete is still in the laboratory stage. At present, a small amount of recycled concrete is used in pavements, foundations and non-load-bearing structures, but it has not yet appeared in load-bearing s...

AI Technical Summary

Problems solved by technology

For the purpose of protecting natural resources and ecological environment, many countries in the world have conducted a lot of research on the recycling of construction solid waste, which has reached the application stage in foreign countries. However, due to the late start in my country, the research on recycled concrete is still in the laboratory stage. At present, a small amount of recycled concrete is used for pavements, foundations and non-load-bearing structures, while load-bearing structures such as housing construction and bridge engineering have not yet appeared.

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