Alfaroji, M.I., Medriosa, H., Arman A, Nugroho, F., Honesti, L. and Ridwan, M. 2025. The Effect of Using Coal Fly Ash as a Fine Aggregate Substitute on the Compressive Strength of Concrete. The South East Asian Journal of Advance Engineering and Technology. 2, 2 (May 2025), 43–47. DOI:https://doi.org/10.62447/seajaet.v2i2.68.