Effect of exposure environment and period on chloride diffusion in concrete with inhibitor

Toru Yamaji, Yoshikazu Akira, Hidenori Hamada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The surface chloride ion concentration (C0) and apparent diffusion coefficient (Dcip) arc very important parameters on estimating the deterioration of RC structures in marine environments. In this study, concrete specimens with an inhibitor were exposed to different marine environments for 1, 3, and 5 years. These encompasscd both tidal and splash environments at three ports in Japan. C0 and Dap were obtained from the chloride ion profiles in concrete. Saturation rates of concrete were also tested. Using the long-term exposure test results, the effects of the exposure environments and periods on C0 and Dap were studied. The results are shown below: 1) Co did not increase between 3 and 5 years in a large number of cases. These specimens tended to show a high saturation rate. A high saturation rate was considered to lead to almost no change in C0 over time. 2) Dap in the tidal environment was slightly larger than in the splash environment. This was considered to be due to the higher saturation rate of concrcte in the tidal than splash environment.

Original languageEnglish
Title of host publicationAdvances in Concrete Structural Durability - Proceedings of the 2nd International Conference on Durability of Concrete Structures, ICDCS 2010
PublisherHokkaido University Press
Pages311-319
Number of pages9
ISBN (Print)9784832903609
Publication statusPublished - 2010
Event2nd International Conference on Durability of Concrete Structures, ICDCS 2010 - Sapporo, Japan
Duration: Nov 24 2010Nov 26 2010

Other

Other2nd International Conference on Durability of Concrete Structures, ICDCS 2010
CountryJapan
CitySapporo
Period11/24/1011/26/10

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All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Ocean Engineering
  • Building and Construction

Cite this

Yamaji, T., Akira, Y., & Hamada, H. (2010). Effect of exposure environment and period on chloride diffusion in concrete with inhibitor. In Advances in Concrete Structural Durability - Proceedings of the 2nd International Conference on Durability of Concrete Structures, ICDCS 2010 (pp. 311-319). Hokkaido University Press.