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Title :  DETERIORATION OF CONCRETE STRUCTURES IN GUNKAN ISLAND

Authors :  Maki Kusunoki (1), Kei-ichi Imamoto (1), Takafumi Noguchi (2), Tomoko Fukuyama (2) and Kazuyuki Shimozawa (

Publication :  13th – 16th February 2013

Volume :  

Pages :  12-Jan

Price :  250

Abstract :  This paper reports on the degradation of concrete structures on Gunkan-Island in Japan. Visual inspection indicates that the causes of the degradation are inherent salinity and salt spray for long years. The chloride-ion content in concrete was detected by the EPMA analysis. According to the analysis, the maximum content of chloride reached up to 38 kg/m3 and that salt concentration was found to be a secondary cause of the degradation.