Sihombing, Adi Putra, Yuzuar Afrizal, and Agustin Gunawan. “PENGARUH PENAMBAHAN ARANG BATOK KELAPA TERHADAP KUAT TEKAN MORTAR”. Inersia: Jurnal Teknik Sipil 10, no. 1 (January 28, 2019): 31–38. Accessed September 17, 2025. https://ejournal.unib.ac.id/inersiajurnal/article/view/6685.