Durability Evaluation of a Carbon Fiber Reinforced Member

Shinkyo, historical wooden bridge, rebuilt in the same form as the present in 1636, repairing work using carbon fiber material was recently conducted. It is required to evaluate the durability of a carbon fiber reinforcement part from a viewpoint of maintenance management. Environmental condition such as temperature and humidity around member of the wooden bridge was measured for four months to grasp conditions of the construction site. These are used as experimental conditions for a carbon reinforced wooden member, and a constant-temperature-bath test and a heat cycle test were carried out. Using these tested members, bending performance and adhesion characteristics were analyzed. Finally, research on evaluation of the repairing method using carbon fiber reinforcement and the method of applying carbon fiber material is described.