Narayana, Darshan, Rajani V Akki, and Sharath B P. 2014. “Experimental Study on the Hardened Properties of Concrete by Using Soft Drink Bottle Caps As Partial Replacement for Coarse Aggregates”. International Journal of Emerging Trends in Science and Technology 1 (08). https://ijetst.in/index.php/ijetst/article/view/377.