Perdana Putra, P. and Widianti, A. 2026. Splitting Tensile Strength of Soft Clay–Coconut Coir Fiber Mixtures Soaked in NaOH at Various Concentrations. International Journal of Science and Environment (IJSE). 6, 1 (Mar. 2026), 1063–1073. DOI:https://doi.org/10.51601/ijse.v6i1.438.