“Utilization of Water Treatment Plant Sludge With High Calcium Fly Ash As Geopolymer Precursor For Paving Cement-Free Bricks”. Journal of Indian Association for Environmental Management (JIAEM) 44, no. 1 (April 25, 2024): 15–30. Accessed May 14, 2026. https://or.niscpr.res.in/index.php/JIAEM/article/view/7086.