Intellectual Property India Publishes Patent Application for A Sustainable M40 Grade Concrete Composition Incorporating Alccofine And Granite Dust As Partial Replacements For Cement, And A Method Of Preparation Thereof.

MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202641122759 A) filed by Aditya Institute Of Technology And Management on October 13, 2026, for A Sustainable M40 Grade Concrete Composition Incorporating Alccofine And Granite Dust As Partial Replacements For Cement, And A Method Of Preparation Thereof..

Inventors include Dr. G. Prasanna Kumar; G. Gowri Sankara Rao; Dr. V. Sowjanya Vani; Krupasindhu Biswal; and G. Anil Kumar.

The application for the patent was published on October 23, 2026, under issue no. 43/2026.

Abstract: The present invention relates to a sustainable M40 grade concrete composition incorporating Alccofine and granite dust as partial replacements for cement. The composition comprises Ordinary Portland Cement, Alccofine, granite dust, fine aggregate, coarse aggregate and water, with Conplast SP550 optionally incorporated as a superplasticizer for achieving required workability. The investigation evaluates Alccofine replacement 5 levels of 5%, 10%, 15% and 20% and granite dust replacement levels of 10%, 20%, 30%, 40% and 50% in M40 grade concrete. The prepared concrete mixes are subjected to compressive-strength, splittensile- strength and flexural-strength evaluations at different curing ages, together with rebound hammer and ultrasonic pulse velocity tests for selected optimum mixes. The 10 experimental results identify 15% Alccofine and 20% granite dust as the optimum combined replacement condition. The resulting optimum concrete mix demonstrates reported improvements of approximately 12.20% in compressive strength, 13.47% in split tensile strength, 8.3% in rebound-hammer-based compressive strength, 5.43% in ultrasonic pulse velocity and 6.32% in flexural strength compared with conventional concrete. The 15 composition therefore provides a concrete system utilizing an ultrafine supplementary cementitious material and granite-processing by-product while improving the reported mechanical and structural performance of M40 grade concrete.

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