Tumengkol, H. A.; Tumpu, M.; Kandou, C.; Kabo, D. R. G.; Tombeg, B. A. Optimizing Concrete Durability in Aggressive Environments Using Silica-Rich Tropical Hardwood Ash As a Supplementary Cementitious Material (SCM). Eng. Technol. Appl. Sci. Res. 2025, 15, 29090-29096.