MUMBAI, India, Jan. 9 -- Intellectual Property India has published a patent application (202511117476 A) filed by Malaviya National Institute Of Technology, Jaipur, Rajasthan, on Nov. 26, 2025, for 'calcium carbonate nanoparticles enhanced sandstone slurry for stabilization of clayey subgrade.'
Inventor(s) include Amrit Singh Shekhawat; and Prof. Suresh Kumar Tiwari.
The application for the patent was published on Jan. 9, under issue no. 02/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to a sustainable soil stabilization system for improving the engineering performance of clayey subgrade soils using a novel combination of sandstone slurry waste (SSW) and calcium carbonate nanoparticles (CCN). The invention provides a stabilization composition and method in which silica-rich SSW is blended with reactive nanoscale CCN to produce in-situ cementitious compounds such as calcium-silicate-hydrate (CSH) gels through synergistic pozzolanic interactions. Clayey soil treated with an optimized formulation of 25% SSW and 0.9% CCN exhibits substantial improvements in unconfined compressive strength (UCS), California bearing ratio (CBR), plasticity index, and swelling behavior. The method involves soil preparation, controlled mixing, compaction, and curing, resulting in a denser soil matrix with enhanced interparticle bonding. The invention provides an eco-friendly and cost-effective alternative to traditional stabilizers like cement and lime, enabling efficient waste utilization, reduced carbon emissions, and improved suitability for road subgrades, embankments, and foundation applications."
Disclaimer: Curated by HT Syndication.
