Performance study of pervious concrete as a road pavement infrastructure system

Abstract

Pervious concrete is recognised as an environment friendly buildingmaterial to meet the growing demands for pavement infrastructure. It is one of the best practices for storm water management by capturing rain water and allowing it to seep into the ground. In this study, influence of fine aggregate and coarse aggregate quantities on the properties of pervious concrete and performance characteristics of pervious concrete in terms of permeability, compressive strength, flexural strength, split tensile strength were carried out. Materials used are OPC Type-I of Grade 43, fine aggregate confirming gradation (Zone II) and coarse aggregate mix of 4.75– 10 mm, 10–12.5 mm, 12.5–16 mm, 16–20 mm of 15, 40, 30 and 15% of total weight of coarse aggregate respectively. Mixes were prepared with the water-cement ratio of 0.34 and maintaining aggregate-cement ratio as 3.5:1. Here, total five nos. mixes were prepared, out of which one for Control concrete mixture having M35 grade and remaining four mixtures were prepared by partial replacement of fine aggregated with coarse aggregate in the range of 70–100% by weight. It was observed from the study that with the increase of fine aggregates, various mechanical properties such that compressive strength, flexural strength, split tensile strength increases, and coefficient of permeability decreases. Also, the relationship between the strength, permeability and total void present in graded aggregate based on angularity number was developed. From the study, we conclude that pervious concrete act as a suitable sustainable pavement infrastructure.