SM. ANDIKA PARA; ABRAHAM KALALIMBONG; MANSYE RONAL AYAL. Improvement of The Gradation of Basic Soil Grains With The Addition of Cement and Clay Soil Against Cbr Values (Hukurila-Seri Ring Road Case Study). International Journal of Science and Environment (IJSE), [S. l.], v. 6, n. 2, p. 440–444, 2026. DOI: 10.51601/ijse.v6i2.512. Disponível em: https://ijsenet.com/index.php/IJSE/article/view/512. Acesso em: 16 jun. 2026.