Saputra, Ichwan Hadi, Eko wahyu Abryandoko, and Moh. Nurudduja. 2026. “Optimization of Concrete Mix Composition Containing Fly Ash and Slag Using a Machine Learning Algorithm for Compressive Strength Prediction”. Engineering Science Letter 5 (02):143-52. https://doi.org/10.56741/IISTR.esl.002300.