Obam, S. Ogah, and Agber Terhemba. “The Performance of Rice Husk Ash and Calcined Clay in Ternary Self-Compacting Concrete”. African Journal of Environmental Sciences and Renewable Energy 10, no. 1 (May 10, 2023). Accessed October 28, 2026. https://publications.afropolitanjournals.com/index.php/ajesre/article/view/430.