Waani, Joice Elfrida, and Lintong Elisabeth. “Substitusi Material Pozolan Terhadap Semen Pada Kinerja Campuran Semen”. Jurnal Teknik Sipil 24, no. 3 (December 6, 2017): 237-246. Accessed October 8, 2025. https://journals.itb.ac.id/index.php/jts/article/view/4085.