Effect of recycled aggregate reinforcement on strength of pervious concrete

Abstract

This article compares different reinforcement schemes for recycled aggregates. This paper proposes a reinforcement scheme that the recycled aggregate is first surface-coated with a mineral admixture in a cement slurry, and then impregnated in a water glass solution under a negative pressure environment. The recycled aggregate improves particle morphology and basic properties. Compare the effect of recycled aggregate on the strength of pervious concrete before and after strengthening to improve the utilization rate of recycled aggregate in pervious concrete. The results show that the basic properties of the recycled aggregates have been significantly improved, and the main technical indicators have met the requirements for the use of "Grade II recycled aggregates." Pervious concrete's compressive strength increased 31% to 22.7 MPa.