Performance of capillary barrier as a sustainable slope protection Alfrendo Satyanaga, Qian Zhai, Harianto Rahardjo, Gilson de F.N. Gitirana Jr, Sung-Woo Moon and Jong Kim MATEC Web Conf., 337 (2021) 03021 Published online: 26 April 2021 DOI: 10.1051/matecconf/202133703021