WG4：Developing repair – strengthen technology based on evaluating the health of superstructure, material, and structural performance

Staff Introduction

• Chairman Hiroshi Masuya（Kanazawa University）
• Tatsuo Nishizawa（National Institute of Technology, Ishikawa College）
• Mitsuhiro Tomita（National Institute of Technology, Ishikawa College）
• Hiroshi Onishi（Iwate University）
• Hiroshi Yokoyama（Nippon Engineering Consultants Co. Ltd）
• Yūka Ishikawa（Fukui Ube Co. Ltd）
• Masahiko Harada（Nippon Engineering Consultants Co. Ltd）
• Yoshihiro Tachibana（Central Nippon Highway Engineering Nagoya Co. Ltd））
• Yasushi Tanaka（Institute of Industrial Science, The University of Tokyo, Collaboration with the SIP University of Tokyo group）

Outline

In WG4, focusing on superstructure (especially RC deck slab and pavement), an inspection technology using shock vibrating device is developed in order to grasp the load bearing and the actual situation of deterioration due to salt damage and ASR. Furthermore, the technological developments for counter-measures are also operated.

①Grasping the current condition based on the inspection data of the superstructure (particularly, RC deck slab) in Hokuriku region
②Elucidation of salt damage – ASR degradation mechanism of superstructure (especially, RC deck slab) based on inspection data and FEM analysis.
③Inspection method for degradation properties of pavement and RC deck slab in Hokuriku Region
④Structural health assessment method and limit state estimation method of the superstructure of concrete structures.
⑤Proposal of structural health evaluation methods for the pavement structures
⑥Technical development of monitoring technology and convertible construction method of exiting – newly conducting concrete structures
⑦Technological development of the high durable pre-cast RC deck slab using new materials and composite materials.