O. M. Omar and  A. M. Heniegal and  G. D. Abd Elhameed and  H. A. Mohamadien,  Effect of Local Steel Slag as a Coarse Aggregate on Properties of Fly Ash Based-Geopolymer Concrete.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2015, vol. 107(11). 1464 - 1472
    [viewed 17 September 2019]. Available from: https://publications.waset.org/pdf/10002919.