Experimental Investigation on Mechanical and Durability Properties of Pervious Concrete

Abstract

The term pervious concrete designates a near-zero-slump, open-graded material involving of Portland cement,
coarse aggregate, little or no fine aggregate, admixtures, and water. The amalgamation of these ingredients will produce
a hardened material with associated pores, ranging in size from 2 to 8 mm, which allows water to pass through simply.
The pervious concrete is produced by using conventional cementitious materials, aggregates, and water. This
concrete is tested for its properties, such as porosity, water absorption, soundness test, compressive strength, water
permeability, split tensile strength, and flexural strength. The most important property of pervious concrete is its water
permeability. According to American Concrete Institute (ACI), they provide some guidelines for mix design of pervious
concrete in ACI 522R. This project was aimed to develop and test three design mixes according to ACI 522R of pervious
concrete to identify the appropriate mix which would provide the maximum compressive strength with an acceptable
permeability rate.
OPC 53 grade cement, coarse aggregate of size 20 mm, fine aggregate as 5%, 10% and 20% replacement of
coarse aggregate were the materials used in this project. Based on the results, a design mix having 10% fine aggregate
with a compressive strength of 5.23 MPa @ 28 days with a maximum coefficient of permeability of 3.12 cm/sec , having
porosity of 16.14% was identified as the optimum.