WASET
    A. H. Yehia and  M. M. Rashwan and  K. A. Assaf and  K. Abd el Samee,  Improvement of Performance for R.C. Beams Made from Recycled Aggregate by Using Non-Traditional Admixture.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2014, vol. 90(6). 668 - 673
    [viewed 08 May 2024]. Available from: https://publications.waset.org/pdf/9998450.