*Akinori HIROSE^1,2 (1. Eight-Japan Engineering Consultants Inc., 2. Repair-kai Inst. for Infrastructure Maintenance eng.)

*Kinji Matsukawa^1,2, Tomoaki Kimura^3,2, Akinori Hirose^4,2, Masahiro Sakano^5,2 (1. Sendai Concrete Test Center Ltd., 2. Repair-kai Inst. for Infrastructure Maintenance eng., 3. Daishin Chemical Ltd., 4. Eight-Japan Enginrrring Consultans Inc., 5. KANSAI UNIVERSITY)

*Masahiko Kubota¹, kinji Matsukawa^2,4, Yukinori Nakatsuru³, Akinori Hirose^1,4 (1. Eight-Japan Engineering Consultants Inc., 2. Sendai Concrete Test Center Ltd., 3. Kawanishi City Hall, 4. Repair-kai Inst. for Infrastructure Maintenance eng.)

*Makoto Ando^1,2, Raiki Tsuda³, Yukinori Nakatsuru³, Akinori Hirose^4,2, Masahiro Sakano^5,2 (1. Oriental Consultants co.,ltd., 2. Repair-kai Inst. for Infrastructure Maintenance eng., 3. Kawanishi City, 4. Eight-Japan Engineering Consultants Inc., 5. Kansai University)

*Kota Morishita¹, Akihiro Enomoto¹, Keita Miyagi¹, Yoshinori Igase², Shinji Aramaki², Tadahiro Yoshida² (1. West Nippon Expressway, 2. NEXCO-West Consultants)

*Hiroyuki YAMADA Yamada¹, Hyoe Nakano¹, Keita Okamoto², Takayuki Fumoto³ (1. MAEDA Corporation, 2. JR-WEST, 3. MIYAJI ENGINEERING)