The project aims at studying the effect of various size of coarse aggregates, fine aggregate percentage and the use of flyash on pervious concrete and characterize the mix for use in pavements. With trials performed for determining the suitable water-cement ratio for the mixes, the proportioning was done with the help of American code for mix proportioning. Ten mixes were formulated and studied. OPC 53 grade cement, coarse aggregates of sizes 10 – 12.5 mm and 19–20 mm, fine aggregate as 5% and 10% replacement of coarse aggregate and class C flyash as 10% and 20% replacement of cement were the materials used for the study. For each mix, various material properties like compressive, tensile and flexural strength were studied. Also, the permeability through the pores was studied using the falling head permeability test. And the tile abrasion test was used to study the abrasive resistance of the concrete. The relationship between strength, permeability and porosity with the help of angularity number of aggregates has been developed. The suitability of each mix as a pavement material is studied.
Pervious concrete, permeability, pores, abrasion
