PENGARUH PENAMBAHAN LIMBAH ABU CANGKANG SAWIT (POFA) TERHADAP NILAI CALIFORNIA BEARING RATIO (CBR) UNTUK STABILISASI TANAH LEMPUNG. FROPIL (Forum Profesional Teknik Sipil), [S. l.], v. 8, n. 2, p. 102–109, 2021. DOI: 10.33019/fropil.v8i2.2143. Disponível em: https://journal.ubb.ac.id/index.php/fropil/article/view/2143. Acesso em: 24 may. 2026.