Comparative analysis of infiltration and pore clogging effects in pervious concrete

Abstract

This paper dealt with the examination of infiltration and pore clogging effects in pervious concrete. Experimental investigation was carried out by considering two aggregate sizes such as 6.3 mm and 12.5 mm and totally six numbers of mixes were produced with the aforesaid aggregate sizes using various binders. Binders such as PPC and Lime – Gypsum – Fly ash (FaL-G) were used in the present study. The obtained results are related with the results of conventional control mix OPC. Strength property test results proved that, mix made with OPC showed higher mechanical property test results when compared with PPC and FaL-G binders. In case of aggregate size, mix containing equal grading of 6.3 mm and 12.5 mm shows better strength properties than single sized aggregate (6.3 mm and 12.5 mm). This can be attributed to the fact that, increased specific surface area in the mix results in increased strength properties. Besides, by progressively introducing clogging materials, clogging study has been conducted in the porous concrete. Permeability coefficient and clogging effect study was examined by using falling head permeability method. Mix made with 12.5 mm aggregate size revealed better clogging resistance than grading mix and smaller size mix. Furthermore, periodic maintenance is highly essential in pervious concrete pavement for having better long-lasting performance. However, properties of all the mixes satisfied the minimum requirement criteria of pervious concrete.