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Method for recycling waste concrete

A technology for waste concrete and recycled concrete, applied in solid waste management, sustainable waste treatment, climate sustainability, etc., can solve problems such as the difficulty of concrete waste treatment, and achieve sustainable development, solve treatment difficulties, and save energy. The effect of waste removal and disposal costs

Inactive Publication Date: 2009-10-21
长兴清华粉体及新材料工程中心有限公司
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for recycling waste concrete, which can reasonably recycle and reuse waste concrete, so as to solve the difficulty in handling a large amount of concrete waste and the resulting negative impact on the environment, etc. problems, saving a lot of garbage removal and handling costs; on the other hand, reducing the mining of natural sand and gravel, protecting the ecological environment, and benefiting the sustainable development of human society

Method used

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  • Method for recycling waste concrete

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Embodiment Construction

[0019] Such as figure 1 , a method for recycling waste concrete, comprising the following steps:

[0020] Step 1: The waste concrete containing scrap steel is crushed in the second stage by a jaw crusher and an impact crusher, and then the scrap steel is electromagnetically separated by a magnetic separator, and then light impurities are screened out by a vibrating screen to obtain regeneration Concrete aggregate, artificial sand and fine powder;

[0021] Step 2: Reshaping the recycled concrete aggregate and artificial sand obtained in Step 1 respectively in a mixing and shaping machine to prepare recycled concrete aggregate and artificial sand with good particle shape, and the recycled concrete aggregate and artificial sand after shaping treatment. The average particle size of the sand particles is distributed between 2 and 25 mm, and the bulk density of the recycled concrete aggregate after plastic treatment is 1.3 to 1.6 tons per cubic meter, and the particles have no obvi...

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Abstract

The invention provides a method for recycling waste concrete, which comprises four steps of vibration screening, reshaping treatment, grinding treatment and mixing compounding. The method can reasonably solve the problem of the reutilization of the waste concrete; on the one hand, the problems of difficult treatment on a large amount of discarded waste concrete, adverse influence on the environment caused by the difficult treatment of a large amount of discarded waste concrete and the like are solved, so that the huge cost of transporting and treating wastes is saved; and on the other hand, the exploitation of natural sandstone is reduced, so that the method protects ecological environment and facilitates the sustainable development of human society.

Description

technical field [0001] The invention relates to a method for recycling waste concrete. Background technique [0002] Cement concrete is by far the largest amount of man-made building materials and an indispensable material basis for the construction of human civilization. However, the dependence of the cement industry on natural resources and the serious pollution to the environment have not been fundamentally changed. The "National Medium- and Long-Term Science and Technology Development Program Outline" proposes to develop unconventional pollutant control technologies and resource utilization technologies such as waste, and establish a technology demonstration model for the development of circular economy. Therefore, from the perspective of rational development and use of resources and sustainable development, it is very important to seek substitutes for primary aggregates. Under the action of traffic load and environmental factors, the cement concrete pavement built in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/16
CPCY02W30/91
Inventor 盖国胜杨玉芬
Owner 长兴清华粉体及新材料工程中心有限公司
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