2026. Empirical Correlation of Compressive and Flexural Strengths in 20 Mpa Rigid Pavement Concrete: Effects of Varied Cement Brands and South Sumatra Local Aggregates. Integrated Science Education Journal. 7, 3 (May 2026), 536–346. DOI:https://doi.org/10.37251/isej.v7i3.3116.