Ridha, Abdi. “The Effect of Sodium Silicate (Na2SiO3) Addition Against Water Absorption and Compressive Strength in Bricks”. International Journal of Engineering Technology and Natural Sciences 6, no. 1 (July 30, 2024): 58-66. Accessed April 3, 2025. //journal.uty.ac.id/index.php/IJETS/article/view/283.