PENGARUH PENAMBAHAN ABU TANDAN KOSONG KELAPA SAWIT (TKKS) TERHADAP NILAI PENETRASI INDEKS ASPAL PERTAMINA PEN.60/70. Siklus : Jurnal Teknik Sipil, [S. l.], v. 2, n. 2, 2016. DOI: 10.31849/siklus.v2i2.353. Disponível em: https://journal.unilak.ac.id/index.php/SIKLUS/article/view/353. Acesso em: 1 apr. 2026.