Pervious Concrete Incorporating Manufacturing Sand as a Partial Replacement for Coarse Aggregate

Abstract

Pervious concrete has recently acquired popularity as a low-impact development strategy in pavements due to its structural, economic, and road-user benefits. The use of a single cement replacement material improved the performance of pervious concrete compared to replacing cement with fly ash or using cement alone. The most effective way for increasing the mechanical, hydraulic, and durability performance of pervious concrete was to replace both cement and aggregates with fly ash and produced sand. Replacement of 25% FA with cement was considered viable for cement replacement, while replacement of coarse aggregate with M-sand by 5%, 10%, or 15% was considered practical for aggregate replacement. The PC specimen had a cube size of 150mm x 150mm x 150mm and was cured in water for 7, 14, 28 days. The compressive strength test is performed in a laboratory after curing. The compressive strength of the pervious concrete is then compared to that of the M15 grade of concrete. The PC specimens had cylinder dimensions of 150mm dia by 300mm height and were cured in water for 28 days. Permeability testing is performed in a laboratory after curing. Key Words: Pervious Concrete (PC), Fly ash (FA), Manufacturing sand (M- Sand), Compressive strength, Permeability.