Chloride penetration in marine concrete structures after 40 years in service

H. Yokota; E. Kato; Y. Akira; H. Hamada

Chloride penetration in marine concrete structures after 40 years in service

H. Yokota, E. Kato, Y. Akira, H. Hamada

Research output: Contribution to conference › Paper

Abstract

This paper discusses the variations in chloride ion profiles in reinforced concrete decks of open-type pier after 40 years in service. One beam and three slabs were taken out from the deck of an existing open-piled pier. Through detailed analysis on mechanical properties of the concrete and chloride ion concentration in the concrete, the following topics are particularly discussed: 1) variations in mechanical properties of concrete and chloride ion profiles in concrete; 2) the relationship between apparent diffusion coefficients and surface chloride ion concentrations in concrete and 3) the effect of environmental conditions on chloride ion profiles. As a result, chloride ion profiles in the concrete member showed wide variations. These variations are considered to be brought by the local environmental conditions at the sampling points due to wind, seawater splash, and reflecting waves.

Original language	English
Publication status	Published - Dec 1 2008
Externally published	Yes
Event	11th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC-11 - Taipei, Taiwan, Province of China Duration: Nov 19 2008 → Nov 21 2008

Other

Other	11th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC-11
Country	Taiwan, Province of China
City	Taipei
Period	11/19/08 → 11/21/08

All Science Journal Classification (ASJC) codes

Civil and Structural Engineering
Building and Construction

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Cite this

Yokota, H., Kato, E., Akira, Y., & Hamada, H. (2008). Chloride penetration in marine concrete structures after 40 years in service. Paper presented at 11th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC-11, Taipei, Taiwan, Province of China.

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year = "2008",

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T1 - Chloride penetration in marine concrete structures after 40 years in service

AU - Yokota, H.

AU - Kato, E.

AU - Akira, Y.

AU - Hamada, H.

PY - 2008/12/1

Y1 - 2008/12/1

N2 - This paper discusses the variations in chloride ion profiles in reinforced concrete decks of open-type pier after 40 years in service. One beam and three slabs were taken out from the deck of an existing open-piled pier. Through detailed analysis on mechanical properties of the concrete and chloride ion concentration in the concrete, the following topics are particularly discussed: 1) variations in mechanical properties of concrete and chloride ion profiles in concrete; 2) the relationship between apparent diffusion coefficients and surface chloride ion concentrations in concrete and 3) the effect of environmental conditions on chloride ion profiles. As a result, chloride ion profiles in the concrete member showed wide variations. These variations are considered to be brought by the local environmental conditions at the sampling points due to wind, seawater splash, and reflecting waves.

AB - This paper discusses the variations in chloride ion profiles in reinforced concrete decks of open-type pier after 40 years in service. One beam and three slabs were taken out from the deck of an existing open-piled pier. Through detailed analysis on mechanical properties of the concrete and chloride ion concentration in the concrete, the following topics are particularly discussed: 1) variations in mechanical properties of concrete and chloride ion profiles in concrete; 2) the relationship between apparent diffusion coefficients and surface chloride ion concentrations in concrete and 3) the effect of environmental conditions on chloride ion profiles. As a result, chloride ion profiles in the concrete member showed wide variations. These variations are considered to be brought by the local environmental conditions at the sampling points due to wind, seawater splash, and reflecting waves.

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