Experimental Study on Characteristics of Construction Waste Regenerating Filler in Metro Depot
Based on the subgrade filled by construction waste of Zhengzhou Metro Line 12 vehicle depot,this paper discusses the composition of construction waste and the possibility of using construction waste as roadbed filler firstly.Then,concrete blocks and broken bricks are used as the main components of regenerating filler in laboratory tests to determine the best mix ratio of recycled filler,and on this basis,the relationship between brick content and maximum dry density and CBR is studied.The quadratic curves of maximum dry density and brick content are fitted,and the feasibility of using construction waste as subgrade filler is verified through the test section.Through the research,it can be seen that the design of construction waste recycled materials according to different proportions of bricks and concrete can meet the strength requirements of various backfill areas and achieve maximum recycling and reuse,and can be used as a reference for similar projects.
vehicle depotconstruction wasteregenerated fillerexperimental study
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