Laboratory investigations on properties of Nanosilica Pervious concrete

Abstract

Porous concrete also called as no fines concrete has become more and acceptable construction and low-traffic road applications. It can be used to prevent flooding in parking lots and pavements, as well as with other materials. The resilience of porous pavement surface is the major issue. Physical properties, cement matrix, particle distribution, binder ratio, admixtures, and water absorption are all important factors. The current research focuses on the compressive, tensile splitting, and flexure strengths of porous concrete with a total aggregate to cement(TA/C) ratio of 3.5:1 and a w/b ratio of 0.34 and 0.30. The test findings reveal that the inclusion of Nano silica has a considerable impact on possessions of porous mix of concrete. The maximum strength in compression achieved was over 40Mpa. Tensile strength ranges between 2.02 MPa to 3.99 MPa. The coefficient of permeability also ranges from 3.24 to 5.65 mm/s. The R2 value for 28,90 and 180 day age of pervious concrete mix is 0.9176, 0.8651 and 0.838 respectively. For higher compressive strength, water permeability was shown to be compromised.