Hasrul, M. R., M. J. Rahman, A. R. A. P. Helmy, T. Natsir, and A. R. Asrib. “Sustainable Lightweight Concrete Using Candlenut Shell As Coarse Aggregate: The Impact of Water-Cement Ratios on Strength and Density”. Journal of the Civil Engineering Forum, Vol. 11, no. 3, July 2025, pp. 257-66, doi:10.22146/jcef.18175.