“Analysis of the Effect of Water Hyacinth Waste Fiber Composition on the Compressive and Tensile Strength of 27 MPa Concrete”. Borneo Engineering: Jurnal Teknik Sipil 10, no. 2 (August 29, 2026): 172–184. Accessed September 18, 2026. https://jurnal.ubt.ac.id/index.php/bejts/article/view/981.