Recycled aggregate type permeable ecological concrete and preparation method thereof

A technology of ecological concrete and recycled aggregate, which is applied in the field of building materials and its application, can solve the problems that recycled concrete is in the laboratory stage, does not appear, and starts late, and achieves the effect of resource utilization and cost reduction

Inactive Publication Date: 2013-02-20
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Recycled aggregate type permeable ecological concrete and preparation method thereof
  • Recycled aggregate type permeable ecological concrete and preparation method thereof
  • Recycled aggregate type permeable ecological concrete and preparation method thereof

Examples

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Embodiment Construction

[0020] Specific preparation process of recycled aggregate type permeable ecological concrete.

[0021] (1) The waste concrete and other construction solid waste blocks are crushed by a jaw crusher and screened by a vibrating screen, and the recycled aggregate with a particle size range of 5-16.5mm and the recycled fine bone with a particle size range of 2.5-4.75mm are selected After pretreatment, it is made into recycled aggregate suitable for recycled aggregate type permeable ecological concrete;

[0022] (2) According to the designed mix ratio, a mixer (drum mixer) is used to mix the recycled aggregate type permeable ecological concrete. First put in 1 / 2 of the recycled coarse aggregate, recycled fine aggregate, cement, and 1 / 2 of the recycled coarse aggregate, pre-mix for less than one minute, then add part of the mixing ratio of water and stir for one minute, then mix the specified amount of admixture with Part of the water in the mix ratio is mixed and added to the concr...

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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...

Claims

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Application Information

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IPC IPC(8): C04B28/04
Inventor 徐荣进刘荣桂薛冬杰张瑶
Owner JIANGSU UNIV
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