Research on the influence of mortar powder content on the performance of recycled concrete

Abstract In order to improve the utilization rate of mortar powder in concrete, influence on workability, compressive strength, impermeability, and volume stability recycled concrete was studied by using control variable method. The results show that aggregate can workability mechanical properties containing appropriate amount powder. content is less than 5%, strength will gradually with increase content. When fine exceeds deteriorate some extent. impermeability a certain 8%, 56d chloride diffusion coefficient 24.5 × 10 -13 m 2 /s, which 52.8% lower without