Analysis of the Decline of Concrete Structure Durability of a Seaside Gymnasium

Abstract

To investigate the causes of the decline of concrete structure durability of a seaside gymnasium, we conducted durability tests at representative areas of the building based on the inspection of its appearance. The tests included the examination of rebar position, thickness of the concrete protection layer and concrete neutrality. The test data is analyzed based on both the original structure design and the construction report. Results show that the main causes of the decline of concrete structure durability include neutralization of concrete and shifting, lack of thickness and water seepage of the protection layer due to construction defect. The durability problems of seaside concrete structure are not necessarily caused by chloride ion invasion.