MUMBAI, India, Nov. 13 -- Intellectual Property India has published a patent application (202621118415 A) filed by Dr. D. Y. Patil Institute Of Technology, Pimpri, Pune on October 03, 2026, for Stabilization Of Expansive Soil Using Fly Ash And Ggbs.
Inventors include Rohan Ambekar; Sujal Rathod; Nayan Tembhurne; Naresh Valge; and Digvijay Magare.
The application for the patent was published on November 13, 2026, under issue no. 46/2026.
Abstract: Disclosed is a soil stabilization composition and method for treatment of expansive (black cotton) soil using Fly Ash and Ground Granulated Blast Furnace Slag (GGBS) as sustainable, industrial by-product based stabilizing agents. The composition comprises expansive soil blended with Fly Ash in the range of 10% to 30% by dry weight and GGBS in the range of 5% to 15% by dry weight, an optimum embodiment comprising about 70% soil, about 20% Fly Ash and about 10% GGBS. The method comprises collecting and characterizing the soil, procuring and characterizing Fly Ash and GGBS, preparing the said mixture, compacting it at its optimum moisture content, and curing the compacted mass for up to 28 days. The optimum composition reduces the Plasticity Index of the soil from about 34% to about 20% and the Free Swell Index from about 89% to about 16%, while increasing the 28-day Unconfined Compressive Strength to about 732 kN/m² and the California Bearing Ratio to about 12%, thereby outperforming conventionally lime-stabilized soil (UCS of about 700 kN/m², CBR of about 10%). The invention provides an economical and environment-friendly alternative to lime/cement based stabilization while enabling productive utilization of industrial by-products, and is suitable for road subgrade, foundation, embankment and canal-lining applications.
Disclaimer: Curated by HT Syndication.
