“CELLULAR GRAVEL PRODUCED FROM RESIDUAL ALUMINO-SILICATE MATERIALS (FLY ASH, METAKAOLIN, SLAG, AND ALKALINE EARTH ALUMINO-SILICATE GLASS) BY NONCONVENTIONAL TECHNIQUES”, revtn, vol. 27, no. 2, Jun. 2023, Accessed: Apr. 27, 2026. [Online]. Available: http://revtn.ro/index.php/revtn/article/view/417