CPT - DR - D50 correlations of sands for liquefaction potential analysis A Hakam, S Warzuqni, BM Adji, Junaidi, IF Muharani and Mardhatillah E3S Web Conf., 156 (2020) 02017 Published online: 13 March 2020 DOI: 10.1051/e3sconf/202015602017