Phan, V. T., and T. H. Nguyen. “The Influence of Fly Ash on the Compressive Strength of Recycled Concrete Utilizing Coarse Aggregates from Demolition Works”. Engineering, Technology & Applied Science Research 11, no. 3 (June 12, 2021): 7107–7110. Accessed September 18, 2021. https://etasr.com/index.php/ETASR/article/view/4145.