A.A, Alodaini, et al. “Removal of Old Adhered Mortar from Crushed Concrete Waste Aggregate (CCWA) With Different HCl Molarities and Its Effect on CCWA Properties”. International Journal of Engineering & Technology, vol. 7, no. 4, Apr. 2019, pp. 5950-9, https://doi.org/10.14419/ijet.v7i4.14451.