2019 Volume 75 Issue 2 Pages 44-59
This research examined reinforced concrete girders which had been exposed to a chloride damage environment on the east coast of the main island of Okinawa Prefecture for 40 years, and had undergone severe chloride induced deterioration. The state of deterioration was analyzed by visual examination and material investigation before samples cut from the girders were subjected to static and repeated loading tests, and mechanical characteristic was examined on the basis of the deflection stiffness and strain properties of the salt-degraded reinforced concrete girders. In addition, sample girders which simulated the progression of deterioration, based on the state of deterioration of the bridge, were repeatedly tested to destruction in static and repeated loading tests, to indicate the failure characteristics of reinforced concrete girders which had been corroded under extreme conditions.
