Electro-osmotic chemical treatments : Effects of Ca2+ concentration on the mechanical strength and pH of kaolin - Chang, Hao-Wei (National Taiwan University of Science and Technology. Department of Construction Engineering) ; Krishna, Paramsamangalam Gopi (National Taiwan University of Science and Technology. Department of Construction Engineering) ; Chien, Shao Chi (Aletheia University. Department of General Education) ; Ou, Chang Yu (National Taiwan University of Science and Technology. Department of Construction Engineering) ; Wang, Ming Kuang (National Taiwan University. Department of Agricultural Chemistry)