Shear Strength Durability Investigation for Gypseous Soil Enhanced by Pectin Biopolymer. Tikrit Journal of Engineering Sciences, [S. l.], v. 31, n. 2, p. 175–183, 2024. DOI: 10.25130/tjes.31.2.17. Disponível em: https://www.tj-es.com/ojs/index.php/tjes/article/view/1931.. Acesso em: 10 sep. 2026.