HIDAYAT, R.; AZKA, C. N.; FATIMAH, A.; FIRMANSYAH, T. A. Subgrade Optimization with Coconut Shell Ash Addition on Glee Gurah Clay Soil. Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil, [S. l.], v. 9, n. 2, p. 393–402, 2025. DOI: 10.32832/komposit.v9i2.19087. Disponível em: https://ejournal.uika-bogor.ac.id/index.php/komposit/article/view/19087. Acesso em: 5 dec. 2025.