Mc Laren L. Baluyut, Lee Ann Carl T. Velasco, Nickel Tone Domini B. Dueñas, Mark Edrian Manlutac, Roy Byron Rueda, & Jenilyn Aquino. (2026). Chemical Treatment of Agricultural Waste Fibers from Pineapple Leaves and Manila Hemp used in Fiber-Reinforced Concrete Hollow Blocks. International Journal of Progressive Research in Science and Engineering, 7(05), 68–79. https://doi.org/10.65138/ijprse.2026.v7i05.1291