Tiwari, Pradeep Kumar, and Afzal Khan. “Experimental Study on Concrete Using Admixture Metakaolin, Copper Slag on M30 Grade Concrete A Review ”. International Journal of Scientific Research in Civil Engineering, vol. 7, no. 2, Mar. 2023, pp. 08-14, https://ijsrce.com/index.php/home/article/view/IJSRCE23722.