Effect of Salt Water on Mechanical Properties of Conventional and Pervious Concrete

Abstract

Pervious concrete is a special high porosity concrete used for roads carrying light traffic, allows the water from precipitation and thereby reducing the runoff from a road surface and hence recharging ground water levels. Objective of this research is to find mechanical properties i.e. compressive strength, split tensile strength and flexural strength of the pervious concrete. The main problem of pervious concrete pavement is the strength itself. The conventional and pervious concrete is tested for 28 days of curing period with fresh water & salt water. For conventional concrete the mix proportion is considered as 1:1.5:3 and that of for pervious concrete 1:4. Water cement ratio of 0.3 for both conventional and pervious concrete is adopted. Fresh water (FW) is a tap water and salt water (SW) is prepared by adding of common salt (2.5%), detergent (2.5%) by volume. From experimental results, it is observed that use of salt water for curing of concrete, improved the mechanical properties of both the conventional and pervious concrete for the period of 28 days.