MUMBAI, India, May 29 -- Intellectual Property India has published a patent application (202641036953 A) filed by Sri Venkateswara College Of Engineering & Technology, Chittoor, Andhra Pradesh, on March 26, for 'phase change material integrated cementitious composite for energy efficient building applications.'
Inventor(s) include Dr. Panga Narasimha Reddy; Dr. Ankammarao Padamurthy; Dr Matam Mohan Babu; Dr B Damodhara Reddy; Dr. A. Mahamani; Dr, Madduri Chittaranjan; M. Leelakar; Kalakada Satish; Drkiran Kumar; B Rajasekhar; Dr. Palleti Venkataramanan; and Kumarakalva Rahelu.
The application for the patent was published on May 29, under issue no. 22/2026.
According to the abstract released by the Intellectual Property India: "This invention relates to the development of interlocking concrete block to improve the thermal performance, strength, and durability of building materials. The block incorporates an organic phase change material (PCM) and fly ash cenospheres to enable efficient thermal energy storage and temperature regulation within the concrete. The PCM absorbs heat when the temperature increases and releases it when the temperature decreases, helping to maintain a stable indoor environment. Alccofine is added as a supplementary cementitious material to enhance the mechanical strength and durability of the block. Its ultrafine particles help densify the concrete micro structure and improve the overall structural performance. Experimental evaluation demonstrated that 25% CeCp and 25% Alccofine were identified as the optimized proportions for achieving improved thermal performance. Additionally, the block is functionally modified through selective surface treatments, that is, the exterior surface is coated with titanium dioxide (2) to improve solar reflectance and reduce heat absorption, and the interior surface is coated with aluminium hydroxide (3) to enhance fire resistance. Hydrofluoric acid is used to treat the surface of fly ash cenospheres to improve their bonding with the PCM. The combined use of these materials results in a concrete block with improved thermal energy storage capacity, enhanced strength, and better resistance to heat and fire, making it suitable for sustainable and energy-efficient construction."
Disclaimer: Curated by HT Syndication.
