MUMBAI, India, July 7 -- Intellectual Property India has published a patent application (202641058084 A) filed by Mepco Schlenk Engineering College on May 07, 2026, for Effective Usage Of Fly Ash Waste Glass And Recycled Coarse Aggregate In Concrete.
Inventors include Mr. R. Vigneshwaran; Mr. P. Siva Guru Pandian; Mr. P. S. Gokul Girl; and Mr. K. Seeralan.
The application for the patent was published on July 03, 2026, under issue no. 27/2026.
Abstract: EFFECTIVE USAGE OF FLY ASH, WASTE GLASS AND RECYCLED AGGREGATE IN CONCRETE ABSTRACT OF THE INVENTION The construction industry heavily relies on natural resources such as cement and aggregates, which contribute to high C02 emissions and environmental degradation during their extraction and manufacturing processes. To address these issues, the use of sustainable materials has been promoted in line with global goals such as Sustainable Development Goals (SDG 11 - Sustainable Cities and Communities, SDG 12- Responsible Consumption and Production, and SDG 13- Climate Action). In this study, an attempt has been made to reduce the consumption of natural materials by utilizing recycled coarse aggregate (RCA), fly ash, and crushed waste glass in M25 grade concrete. Recycled coarse aggregate, obtained from construction and demolition waste, is used as a partial replacement for natural coarse aggregate, while fly ash, a by-product of thermal power plants, is used as a partial replacement for cement due to its pozzolanic properties. Crushed glass, rich in silica content, is used as a partial replacement for fine aggregate to improve particle packing and microstructure. These materials contribute to the formation of additional Calcium Silicate Hydrate (C-S- H) gel, enhancing long-term strength and durability. The waste materials, which are otherwise disposed of in landfills, are processed and incorporated into concrete at controlled proportions. In this study, fly ash is used as a replacement for cement at 20% and 25%, crushed glass is used as a replacement for fine aggregate at 10% and 15%, and recycled coarse aggregate is used as a replacement for natural coarse aggregate at 20%, 25%, and 30% by weight. A water-cement ratio of 0.5 is maintained to achieve the required workability and strength. The primary objective of this study is to evaluate the effect of these sustainable materials on the carbonation depth and mechanical properties of concrete. The specimens are subjected to curing and tested for compressive strength and carbonation resistance. This approach not only helps in reducing environmental impact and waste disposal problems but ~lso contributes to the development of sustainable and durable concrete.
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