MUMBAI, India, Nov. 2 -- Intellectual Property India has published a patent application (202621112071 A) filed by Dr. A. Narender Reddy; Mr. M. Vamshi Krishna; Dr. J. Suryaprakash Reddy; Ms. Y. Sudha Madhuri; Dr. Bypaneni Krishna Chaitanya; Dr. Prathik Kulkarni; Dr. J. Jayaprakash Reddy; and Mr. Chintala Siddartha on September 18, 2026, for Eco-Friendly High-Strength M60 Concrete Incorporating Sugarcane Bagasse Ash (scba) And Graphene Oxide (go) With Optimized Synergistic Performance And Preparation Method..
Inventors include Dr. A. Narender Reddy; Mr. M. Vamshi Krishna; Dr. J. Suryaprakash Reddy; Ms. Y. Sudha Madhuri; Dr. Bypaneni Krishna Chaitanya; Dr. Prathik Kulkarni; Dr. J. Jayaprakash Reddy; and Mr. Chintala Siddartha.
The application for the patent was published on October 30, 2026, under issue no. 44/2026.
Abstract: The present invention relates to a strengthening system and method for prestressed concrete members using externally bonded glass fibre-reinforced polymer (GFRP) laminates applied to the tensile surface, such as the soffit, of the member. The laminate comprises chopped strand mat, woven roving, unidirectional fibre cloth, or a combination thereof, bonded to the concrete via an adhesive layer, with laminate configuration and thickness selected according to concrete grade, prestressing arrangement, and required performance improvement. To validate the system, fourteen post-tensioned concrete beams were fabricated using M35 and M60 grade concrete, with two beams retained as unstrengthened controls and twelve strengthened using GFRP laminates of 3 mm and 5 mm thickness. The beams were surface- prepared, bonded, cured, and tested under static two-point loading until failure, with yield load, ultimate load, deflection, stiffness, ductility, crack width, and energy absorption recorded. Results were further validated using finite element modelling and regression analysis. The strengthened beams exhibited significant improvements in load-carrying capacity, stiffness, ductility, crack control, and energy absorption compared to controls, with unidirectional cloth laminates and increased thickness producing the greatest gains. The invention thus provides a lightweight, corrosion-resistant, and minimally intrusive strengthening solution for rehabilitating prestressed concrete structures, supported by a predictive analytical and numerical design method.
Disclaimer: Curated by HT Syndication.
