Manish A. Khandare and Anil L. Agarwal
Abstract
Groundwater depletion in urban areas has intensified due to increased impervious surfaces and reduced natural recharge, emphasizing the necessity for an infiltration solution. Constraints in the space, maintenance cost and lack of cooperation from public are the issues in implementing the rainwater harvesting system. Pervious concrete offers a promising solution in rapid infiltration of rainwater, and this study experimentally evaluates the infiltration rate and void content of pervious concrete containing micro silica, guar gum, glass fibers, and varying aggregate size. A total of 21 mixes, including control mix and modified mixes with micro silica, biopolymer, glass fiber, and combined 20 mm and 10 mm aggregate gradations, have been prepared, and the percentage of voids using the volumetric water displacement method and infiltration rate using a variable head infiltration method have been calculated. The results demonstrate that the infiltration capacity of pervious is governed by void percentage and aggregate gradation, with larger aggregate sizes exhibiting higher infiltration rates. The findings provide valuable insights into optimizing pervious concrete mixes for enhanced stormwater infiltration and sustainable urban water management.