Compressive Strength Of Pervious Concrete

Previous concrete has a lower compressive strength capability than conventional concrete and only supports light traffic loading such as greenhouses, driveways, sidewalks, residential streets tennis courts, and swimming pool decks. In this thesis it investigates the compressive strength of pervious concrete as it relates to water-cement (w/c) ratio of 0.35 and 0.39, aggregate-cement (a/c) ratio of 4:1, 5:1 and 6:1 and aggregate size that passes through sieve size of 3/8 inches and compare the results obtained in laboratory experiments conducted on the eighteen cylinder samples. It is created for the purpose of finding a balance between water, aggregate, and cement in order to increase strength and permeability while two characteristics tend to counteract one another. Based on the results, of compressive strength tests after 28 days of curing, the functional mixture of pervious concrete which has an optimum mixture to have a high compressive strength that reached 1670psi with an effective permeability rate of 2.762 in 3/sec is mixture 4 which has a water- cement ratio of 0.39 and an aggregate-cement ratio of 5: I. Extremely high permeability rates and low compressive strengths were achieved in mixture of 6:1 a/c ratio and contrary to 4:1 a/c ratio.