WG5：Development of repair and reinforcement techniques based on health assessment of the superstructure, and material and structural performance evaluation

Staff Introduction

• Chairman Yoshimori Kubo（Kanazawa University）
• Shinichi Igarashi（Kanazawa University）
• Shunichi Kobayashi（Kanazawa University）
• Kazuto Fukudome（National Institute of Technology, Ishikawa College）
• Takashi Habuchi（TOA Corporation）
• Toshio Suzuki（Central Nippon Expressway Co. Ltd.）
• Koji Ishii（Kanazawa University Visiting Professor, P.S Mitsubishi Construction Co. Ltd.）
• Tomoshige Kamotani（P.S Mitsubishi Construction Co. Ltd.）
• Teruhiko Sasatani（National land Development Center Co. Ltd. ）
• Shuuzo Ura（National land Development Center Co. Ltd.）

Outline

In WG5, the development of assessment technology is operated based on grasping the salt damage – ASR degradation state as well as the status of deterioration progress on the substructure. Besides, as a countermeasure approach, maintenance materials and recovery methods are also developed. Moreover, the technological development of simple and economic electrolytic protection methods is carried out on the superstructure.

①Grasping the degradation state of ASR deterioration and salt damage on the substructure of Hokuriku region
②Inspection method for degradation state of substructure
③Service life estimation based on the durability investigation of maintenance material applied to bridges subjected to salt damage and ASR degradation.
④Monitoring and developing technology for lining strengthening method using steel plates and PC cables (ASR-affected substructures)
⑤Developing technology and designing simple and economical materials for permeable water repellent and permeability corrosion prevention.
⑥Technology development of a simple and economical electrical corrosion protection method (superstructure)

Photo The real bridge with electrical corrosion protection method

⑦Technology development of repair and reinforcement methods in severe environments
⑧Proposal of structural health evaluation methods for the substructures