Research on Physical and Mechanical Characteristics of Recycled Aggregate Concrete

Abstract

Development and utilization of recycled aggregate concrete can solve the processing difficulties caused by a lot of waste concrete. Experiments results showed the higher replacement percentage of recycled aggregate concrete, the lower its bulk density. Both drying shrinkage degree and drying shrinkage sustained time of recycled aggregate concrete increase with increasing its replacement percentage. The ultimate bearing capacity of recycled aggregate concrete decreases as its replacement percentage increases. Elastic modulus of recycled aggregate concrete decreases with increasing its replacement percentage. The variation characteristics of deformation modulus and elastics modulus along with their replacement percentage are similar. Both of them decrease with increasing their replacement percentage. Deformation modulus of recycled aggregate concrete is more sensitive to the variation of its replacement percentage.