Susilowati, Anni, and Iqbal Yusra. “KUAT TEKAN BETON CAMPURAN GGBFS DAN FLY ASH MENGGUNAKAN RETARDER”. Jurnal Prokons 15, no. 1 (February 28, 2021): 51–56. Accessed November 25, 2024. http://jurnal.polinema.ac.id/index.php/PROKONS/article/view/5368.