Investigation of the Mechanical Attributes of Porous Concrete and its Performance Analysis Using Superplasticizers

Abstract

Pervious concrete is a mixture of binding material, aggregate, water, and admixture. The water content plays an important role in the performance of the pervious concrete. When the water content is reduced, the density of the pervious concrete mix increases. The increased density also increases the strength, the weathering resistance increases, and permeability decreases, for wetting and drying the variations of volume decrease, and shrinkage cracking abilities also decrease. This experimental study was carried out to find out the optimum percentage of locally available superplasticizers on the workability and compressive strength of Pervious concrete and to compare the results of Pervious concrete with conventional concrete. Three different percentages of superplasticizer were utilized, with dosage ranging from 1% to 2% with an increment of 0.5%. The water-cement ratio remained constant at 0.25 for all pervious concrete samples. Based upon the results, all three percentages of superplasticizer increased the workability and compressive strength of Pervious concrete. The optimum dosage of super plasticizer was determined to be 1.5% which provided the maximum compressive. The pervious concrete can be used in low-volume traffic. The strength of pervious concrete can be increased by using high-performance cement and superplasticizers.