Copyright © 2026 Authors retain the copyright of this article. This article is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

@article{206555,
        author = {Dr. Venuprasad A and Nithyashree S and Manjunath K and Lokesh Rao Jadav},
        title = {EXPERIMENTAL INVESTIGATION ON PARTIAL REPLACEMENT OF CEMENT BY COFFEE HUSK ASH},
        journal = {International Journal of Innovative Research in Technology},
        year = {2026},
        volume = {13},
        number = {2},
        pages = {2151-2164},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=206555},
        abstract = {This study investigates the feasibility of using coffee husk ash (CHA) as a partial replacement for Ordinary Portland Cement (OPC) in M25 grade concrete. Coffee husk ash, an agricultural waste with pozzolanic properties, was used at replacement levels of 0%, 5%, 10%, 15%, 20%, and 25% by weight of cement. Concrete specimens were prepared, cured for 7, 14, and 28 days, and tested for workability and compressive strength. The results showed that workability and compressive strength decreased with increasing CHA content. However, concrete containing 5–10% CHA exhibited satisfactory performance while reducing cement consumption and promoting sustainable waste utilization. The study concludes that coffee husk ash can be effectively used as an eco-friendly supplementary cementitious material in concrete.},
        keywords = {Coffee husk ash, M25 Concrete, Compressive strength, Sustainable construction.},
        month = {July},
        }