MUMBAI, India, Aug. 12 -- Intellectual Property India has published a patent application (202641094274 A) filed by Karpagam College Of Engineering; Karpagam Academy Of Higher Education; Mr Shantha Kumar K; and Vinoth A on August 04, 2026, for Sustainable Transition: Developing Eco -Gpc With Multicomponent Waste Ash Blends For Superior M30 Performance.
Inventors include Mr Shantha Kumar K; and Vinoth A.
The application for the patent was published on August 07, 2026, under issue no. 32/2026.
Abstract: Innovation toward high-performance, sustainable binders is being propelled by the growing environmental need to abandon traditional Portland cement production. In this research, a quaternary mixture of industrial and agricultural waste materials - fly ash (FA), ground granulated blast furnace slag (GGBS), rice husk ash (RHA), and eggshell powder (ESP) is combined with a novel, environmentally friendly geopolymer concrete (GPC) made with reduced alkaline activator dosages, demonstrating a dedication to Green Chemistry. The research targets M30 grade performance by defining the ideal binder combination (50% FA, 30% GGBS, 10% RHA, and 10% ESP) using a datadriven material optimization approach. This inquiry goes beyond simple mechanical assessment and provides a full evaluation of hardened concrete features such as compressive strength, flexural strength, split tensile strength, and durability characteristics (water absorption and quick chlorine penetration). The ideal GPC mix achieved a 28-days compressive strength of 36.2 MPa, far above the target. Crucially, the same optimized mix achieved a 28-days flexural strength of 5.1 MPa and a split tensile strength of 3.8 MPa, demonstrating structural feasibility across a variety of load applications. These findings are ascribed to the synergistic activation of the Ca-rich mix, which promotes the rapid creation of a dense, multi-phase matrix (C-A-S-H/N-AS-H). Durability testing demonstrated excellent performance: the improved GPC had a low water absorption rate (below 3.5%) and was classified as having Very Low Chloride Permeability (below 500 Coulombs), greatly outperforming normal conventional concrete. This higher performance in the mechanical and durability domains demonstrates the possibility of smart waste valorisation and partial activation. The findings demonstrate this GPC formulation as a strong, cost-effective, and ecologically responsible option that completely supports Circular Economy principles in modern building.
Disclaimer: Curated by HT Syndication.
