Study of Strength Properties of Pervious Concrete using Flyash

Concrete is a homogeneous mixture of cement, aggregate (fine and coarse aggregate) and water. Now a day’s special concrete is more preferred in the construction industry. Some of the special concretes are pervious concrete, high strength concrete, transparent concrete, self compacting concrete because of their special properties which is better compared to convectional concrete. Pervious concrete is a special concrete in which no fine aggregate is used. It is a zero slump concrete, open graded material consisting of cement, coarse aggregate, admixture and water. Fly ash concrete increases the long term compressive strength of concrete when compared to plain cement concrete. It can be used in levels ranging at 15% to 25% by mass of cementitious material component.The main aim of this experimental study is to design M 20 mix for pervious concrete by using fly ash .as per the test results, the specimens of pervious concrete of M20 mix for compressive strength, split tensile strength of pervious concrete with percentage of fine aggregate as 0%, 10% & 20% of concrete specimen tested for 7 days, 28 days & 90 days are presented in this paper and the cement has been replaced with fly ash accordingly in the range of 30% by weight of total cement.