THE CORRELATION BETWEEN AIR-BORNE SALT AND CHLORIDES CUMULATED ON CONCRETE SURFACE IN THE MARINE ATMOSPHERE ZONE IN NORTH TAIWAN

Authors

Yu-Sheng Chen, Department of Civil Engineering, National Taiwan University, Taipei, Taiwan, R.O.C
Hui-Jen Chiu, Department of Civil Engineering, National Taiwan University, Taipei, Taiwan, R.O.C
Yi-Wen Chan, Department of Civil Engineering, National Taiwan University, Taipei, Taiwan, R.O.C
Yung-Chang Chang, Taiwan Construction Research Institute, Taipei, Taiwan, R.O.C
Chung-Chia Yang, Institute of Materials Engineering, National Taiwan Ocean University, Keelung, Taiwan, R.O.C.Follow

Abstract

In this study, the improved Japanese salt sampler was adopted for the air-borne salt sampling tests in coastal areas of northern Taiwan. Thirty-five collection stations were set up in the northern coastal areas to collect air-borne salt data monthly from 2006 to 2009. As the exposure of structures in the natural environment, the chloride on the concrete surface of RC structures would be washed away by the precipitation. Therefore, a two-phase collection method was used to get the total air-borne salt “Cair” and the adhesive air-borne salt “Cadh”. The statistic results showed that the percentage of Cadh/Cair has a high correlation with the volume of effective precipitation. Conclusively, the concentration of chloride ion on the concrete surface can be inferred a linear empirical formula according to the regional climatic characters to indicate the total air-borne salt and the adhesive air-borne salt on concrete surface respectively.

Recommended Citation

Chen, Yu-Sheng; Chiu, Hui-Jen; Chan, Yi-Wen; Chang, Yung-Chang; and Yang, Chung-Chia (2013) "THE CORRELATION BETWEEN AIR-BORNE SALT AND CHLORIDES CUMULATED ON CONCRETE SURFACE IN THE MARINE ATMOSPHERE ZONE IN NORTH TAIWAN," Journal of Marine Science and Technology: Vol. 21: Iss. 1, Article 4.
DOI: 10.6119/JMST-011-0714-1
Available at: https://jmstt.ntou.edu.tw/journal/vol21/iss1/4