Tengal, Dr. Sunil Kumar. 2017. “Ductility Index For Class F Fly Ash Based Reinforced Geopolymer Concrete Beams”. International Journal of Advances in Scientific Research and Engineering (IJASRE), ISSN:2454-8006, DOI: 10.31695/IJASRE 3 (1 Special issue):299-307. https://ijasre.net/index.php/ijasre/article/view/923.