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), pp. 43–47. doi: 10.62447/seajaet.v2i2.68.