Abstract
Concrete is the largest amount of artificial building materials in the world today. According to incomplete statistics, the construction waste produced in china each year can reach about one hundred million tons, and it can reach hundreds of millions of tons due to the long accumulation, which has become a serious social and environmental issues. In this paper, the technology of separation and recycle of waste concrete is studied, and the components of waste concrete are separated effectively, which provides a technical guarantee for the recycling of waste concrete. The waste concrete is disposed through the process of crushing, shelling and sieving and so on, the coarse aggregate and fine aggregate are separated effectively, the properties of coarse aggregate are nearly the same as natural aggregate. When the shelled fines is milled into ultrafine powder and used as concrete admixture, the performance of concrete can be improved. These all provide a new effective way for the recycling of waste concrete.
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