Penambahan Abu Tandan Kelapa Sawit dan Semen Terhadap Nilai CBR (California Bearing Ratio) Pada Tanah Lempung. Siklus : Jurnal Teknik Sipil, [S. l.], v. 6, n. 1, p. 49–55, 2020. DOI: 10.31849/siklus.v6i1.3772. Disponível em: https://journal.unilak.ac.id/index.php/SIKLUS/article/view/3772. Acesso em: 14 may. 2026.