Videla, Carlos, and Patricia Martínez. “FLY ASH LIGHTWEIGHT AGGREGATES FOR SUSTAINABLE CONCRETE CONSTRUCTION”. Revista Ingeniería de Construcción 16, no. 2 (August 31, 2001): 99–104. Accessed November 15, 2024. https://horizonteenfermeria.uc.cl/index.php/ric/article/view/17285.