MUMBAI, India, Aug. 12 -- Intellectual Property India has published a patent application (202641094657 A) filed by Vidyabalagam; Boni Hyma; Koruprolu Kartheek Pavan Kumar; and Tarun Kumar Jena on August 05, 2026, for An Optimized Sustainable Pervious Concrete Composition And Method Of Manufacturing The Same Incorporating Recycled Coarse Aggregates And Ground Granulated Blast Furnace Slag.
Inventors include Vidyabalagam; Boni Hyma; Koruprolu Kartheek Pavan Kumar; and Tarun Kumar Jena.
The application for the patent was published on August 07, 2026, under issue no. 32/2026.
Abstract: Pervious concrete is an environmentally sustainable construction material that facilitates stormwater infiltration and groundwater recharge; however, its widespread application is restricted due to the inherent trade-off between permeability and mechanical strength. The present study investigates the influence of aggregate-to-cement (A/C) ratio, water-to-cement (W/C) ratio, Ground Granulated Blast Furnace Slag (GGBS) replacement, and recycled coarse aggregate (RCA) incorporation on the compressive strength performance of pervious concrete. Conventional pervious concrete mixes were prepared with different A/C ratios of 4:1, 6:1, 8:1, and 10:1 and W/C ratios of 0.40 and 0.45. The experimental results revealed that compressive strength decreased with an increase in A/C ratio due to increased void content and reduced aggregate-paste bonding. The optimum conventional mix was observed at an A/C ratio of 4:1, achieving a maximum compressive strength of approximately 35 MPa at 28 days for a W/C ratio of 0.40, whereas higher A/C ratios resulted in reduced strength. Further investigations were carried out by partially replacing cement with GGBS in the range of 0–90%. The results indicated that GGBS replacement beyond the optimum level reduced compressive strength due to slower hydration and reduced bonding characteristics. A 40% GGBS replacement level exhibited comparable strength to conventional pervious concrete and was identified as the optimum replacement percentage for both W/C ratios. The effect of recycled coarse aggregate replacement was also studied by varying RCA content from 0% to 100%. The incorporation of RCA improved sustainability by utilizing construction waste; however, increasing RCA content resulted in reduced compressive strength due to higher porosity and weaker interfacial bonding. The compressive strength varied from 22 MPa for the control mix to 18 MPa for 100% RCA replacement at a W/C ratio of 0.40. The study demonstrates that the performance of pervious concrete is governed by the combined effect of mix proportions, porosity, binder composition and aggregate characteristics. The optimized utilization of GGBS and recycled aggregates provides a sustainable alternative for pervious concrete production while maintaining adequate mechanical performance. The developed concrete system offers potential applications in sustainable pavement construction, stormwater management structures, and other environmentally responsible infrastructure applications.
Disclaimer: Curated by HT Syndication.
