〇Shinichi Nakata¹, Masato Saitou¹, Mizuki Takigawa¹, Sigeyuki Date² (1.Graduate School of Engineering, Tokai University, 2.Tokai University)

〇Kohei Taya¹, Masumi Inoue², Heesup Choi³, Kenichi Yoshioka⁴, Yuhji Sudoh⁵ (1.Kitami Institute of Technology, 2.Kitami Institute of Technology, 3.Kitami Institute of Technology, 4.Nippon High Strength Concrete Co., Ltd, 5. Chemicals Division Nissan Chemical Corporation)

〇Yusuke Tomita¹, Heesup Choi², Masumi Inoue², Yuhji Sudoh³ (1.Student of Department of Civil and Environmental Engineering, Kitami Institute of Technology, Kitami, Japan, 2.Professor of Department of Civil and Environmental Engineering, Kitami Institute of Technology, Kitami, Japan, 3.Chemicals Division. Basic Chemicals Department, Nissan Chemical Industries, Ltd., Tokyo, Japan)

〇Takahiro Sagawa¹, Huu Yoshida¹ (1.Maebashi Institute of Technology)

〇ATSUNORI NEGISHI¹, MINORU HATA², ZENPEI MIOKA³ (1.Hazama Ando corporation, 2.Nippon Hume corporation, 3.Bicrete products association)

〇yusuke kaizuka¹, makoto hisada¹, hiroshi minagawa¹, shintaro miyamoto¹ (1.TOHOKU University)

〇Takeshi Yamakawa¹, Takeshi Torichigai¹, Hiroaki Yamano¹, Shohei Nakashima¹, Yuichi Otabe², Kazuya Honda² (1.Kajima , 2.Sumitomo Osaka Cement)

〇Reiko Okamoto¹, Eiji Owaki¹, Satoshi Watanabe¹, Kyoichi Shinbo¹, Hiromi Tanaka¹ (1.Taisei)