GONZALES, Cybelle; MEGALLOS, Redjie; IGNACIO, Ian Poecholo; CAO, Marlixis Angela. Effects Of Coal, Wood, And Crop Ashes on the Compressive Strength and Water Absorption of Eco-Friendly Building Blocks. International Journal of Education, Research, and Innovation Perspectives, Philippines, v. 2, n. 5, p. 1689–1696, 2026. DOI: 10.5281/zenodo.20405367. Disponível em: https://ijerip.erio.org.ph/index.php/articles/article/view/768. Acesso em: 27 may. 2026.