Application of Cement-stabilized Construction Waste Recycling Aggregate in Pingyi Expressway
This paper mainly studies the application of construction waste recycling aggregate in the subbase layer of Pingyi Expressway.The basic performance of construction waste recycled aggregate and natural aggregate was compared,the design test and fatigue performance test of cement stable recycled aggregate mixture mixture were carried out,and the economic benefits and carbon reduction benefits of recycled aggregate for highway engineering were analyzed.The results show that the crushing value and water absorption rate of the recycled aggregate are large,and it can be used for the subbase layer of Pingyi Expressway after being mixed with 30％natural aggregate.The minimum cement dosage of the mixture with 70％recycled aggregate content was 4.0％,and the maximum dry density and optimal moisture content were 2.033 g/cm3 and 9.1％,respectively.The addition of recycled aggregate can improve the fatigue performance of the mixture,thereby improving the durability of the subbase;The application of construction waste recycling aggregates in Pingyi Expressway has significant economic,carbon reduction and environmental benefits.
万方数据
维普
