Optimization of the Atterberg Limits on expansive soil stabilized with chitosan biopolymerDimas Aldie Firmansyah, Andri Krisnandi Somantri, Atmy Verani Rouly Sihombing, Asep Sundara and Lindung Zalbuin MaseE3S Web of Conf., 479 (2024) 06002DOI: https://doi.org/10.1051/e3sconf/202447906002