EFFECT OF COMBINED REPLACEMENT OF CEMENT AND AGGREGATES ON THE PERFORMANCE OF PERVIOUS CONCRETE

Pervious concrete (PC) made with sustainable binding materials and aggregates addresses various environmental issues. This study investigates the influence of the combined replacement of ordinary Portland cement (OC) and normal aggregates (NA) with alternative materials on the mechanical and hydraulic performance of PC. Supplementary cementitious materials (SCM) were used to replace OPC. At the same time, NA was replaced by industrial waste aggregates (IW) and recycled concrete aggregates (RCA). A fixed-effect meta-analysis (FEMA) statistical technique was used to analyze the compressive strength and permeability from studies spanning over the past eight years. Results demonstrated the ability to replace cement or aggregates in PC without compromising compressive strength and permeability. The combined replacement of cement with SCM and aggregates with IWA increased the strength but decreased the permeability compared to PC made with OC and NA. Similarly, PC made with SCM and RCA demonstrated similar mechanical and improved hydraulic performance.