Analysis of the Mechanical Performance of f’c = 210 kg/cm² Concrete with Volcanic Ash as a Partial Cement Replacement and Aggregates from the Megarok Quarry. CIYA [Internet]. 2026 Sep. 30 [cited 2026 Oct. 3];10(2):72-8. Available from: https://investigacion.utc.edu.ec/index.php/ciya/article/view/1383