[1]Research Centre for Geotechnology, Indonesian Institute of Sciences (LIPI), J1. Sangkuriang Komplek LIPI, Gd. 70, Bandung 40135, Indonesia;
[2]Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishiku, Fukuoka 819-0395, Japan;
[1]Research Centre for Geotechnology, Indonesian Institute of Sciences (LIPI), J1. Sangkuriang Komplek LIPI, Gd. 70, Bandung 40135, Indonesia;
[1]Research Centre for Geotechnology, Indonesian Institute of Sciences (LIPI), J1. Sangkuriang Komplek LIPI, Gd. 70, Bandung 40135, Indonesia;