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.
