MUMBAI, India, Jan. 9 -- Intellectual Property India has published a patent application (202511112963 A) filed by Madan Mohan Malaviya University Of Technology, Gorakhpur, Uttar Pradesh, on Nov. 17, 2025, for 'sustainable asphalt mixture comprising induction furnace steel slag.'
Inventor(s) include Neeraj Kumar Chaubey; and Arun Kumar Mishra.
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 invention relates to a sustainable hot mix asphalt (HMA) composition incorporating induction furnace steel slag (IFS) as a partial replacement for conventional fine aggregates. The proposed mixture addresses the dual environmental challenges of natural aggregate depletion and industrial slag accumulation by transforming steel-industry byproducts into high-performance road construction materials. Chemical and morphological characterization confirms that IFS possesses higher alkalinity, greater roughness, and enhanced porosity than natural aggregates, leading to superior interfacial bonding with bitumen. Laboratory evaluations demonstrate that substituting up to 25% of fine aggregates with IFS increases Marshall stability by 21.50% and improves tensile strength ratio by 7.06%, while maintaining acceptable volumetric and flow parameters. Optimum performance is achieved at 15-20% replacement, providing enhanced structural stiffness and moisture resistance. The invention offers an environmentally responsible alternative to traditional HMA by improving pavement durability and promoting the beneficial reuse of industrial steel slag."
Disclaimer: Curated by HT Syndication.
