Harahap, A.H.S., Sumargo and Nursyafril 2021. Increased Durability of Concrete Against High Temperatures due to Fire with Ground Granulated Blast Furnace Slag. Potensi: Jurnal Sipil Politeknik. 23, 1 (Apr. 2021), 11-15. DOI:https://doi.org/10.35313/potensi.v23i1.2546.