Along with the sustained and rapid development of economy in China, especially the rapid urban development, the development of the construction industry has reached a new level. However in the urban development, discarded building materials are problems to which we have to pay attention as well. At present, most of discarded building materials in our country are treated as waste by landfill or outdoor display. These problems have brought huge resource consumption to city and pollute the environment meanwhile. With the lack of energy sources and the aggravation of the environmental problems in ...
