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Pervious concrete remains a sustainable solution for effective water management in urban scenarios. Owing to the absence of fine aggregates, properties of pervious concrete rely much on the properties of aggregates and porosity. This article is aimed at determining the effect of aggregate size on the performance of pervious concrete mixes using 12.5 and 20 mm nominal-sized aggregates. In addition to that, the effects of polypropylene and glass fibre were experimented by varying their proportion in volumetric increments of 0.1% up to 0.4%. The aggregate to cement ratio and water to cement ratio were retained constant at 3.54 and 0.35, respectively. Results indicated that the fall in aggregate size improves mechanical properties but decreases porosity and permeability values. The presence of fibres in pervious concrete mixes was observed to improve flexural and split tensile strength but has no significant effect on the compressive strength, porosity and permeability.

Effect of aggregate size on properties of polypropylene and glass fibre-reinforced pervious concrete