“Use of Wood Ash As a Substitute for Fine Aggregate in the Production of Lightweight Concrete”. Revista Científica Interdisciplinaria Investigación y Saberes 14, no. 1 (February 6, 2024): 1–12. Accessed June 3, 2025. http://revistasdigitales.utelvt.edu.ec/revista/index.php/investigacion_y_saberes/article/view/239.