摘要: This study was intended to determine why it was necessary to replace the RockyPoint Viaduct (1954-1994), on the Oregon coast south of Port Orford, after a period of service that was much shorter than that of many other reinforced ... 展开 This study was intended to determine why it was necessary to replace the RockyPoint Viaduct (1954-1994), on the Oregon coast south of Port Orford, after a period of service that was much shorter than that of many other reinforced concrete bridges on the Oregon coast; to identify construction practices that may have contributed to its early failure; and to identify evaluation methods that are most effective for characterizing bridge condition. A 14.3 m (47 foot) section of concrete Beam A1 and bridge deck between the north abutmen5t and pier 1 was removed from the seaward side of the Viaduct for evaluation of: (1) concrete properties; (2) reinforcing bar (rebar) corrosion; and (3) chloride migration in the concrete. 收起