“Durability against freeze-thaw cycle of natural pozzolan concrete”, Int. J. Curr. Eng. Technol., vol. 8, no. 5, pp. 1310–1317, Oct. 2018, Accessed: Mar. 13, 2026. [Online]. Available: https://ijcet.evegenis.org/index.php/ijcet/article/view/1943