H. M. . Shaker, Shimaa, M. A. . Moneim, F. . Refaie, and H. S. . Ibrahim, “Valorization of Phosphate Waste Sludge as a Nonhazardous Fire Resistant Material added to Concrete mix”., IJASRE, vol. 5, no. 9, pp. 178–184, Sep. 2019.