현장코어시료에 의한 항만콘크리트구조물의 내구특성 평가

Title
현장코어시료에 의한 항만콘크리트구조물의 내구특성 평가
Alternative Title
DURABILITY EVALUATION OF HARBOR CONCRETE STRUCTURE BASED ON IN-SITU CORE SPECIMENS
Author(s)
한상훈; 박우선
KIOST Author(s)
Park, Woo Sun(박우선)
Publication Year
2011-09-30
Abstract
The corrosion of steel by the damage of passivity layer around steel bars is a major source of durability problems in concrete structures. As chloride ion penetration is a major cause of destruction of passivity layer, the evaluation of concentration profile of chloride ion is the essential factor for the service-life estimation of concrete structure. To estimate chloride ion penetration characteristics, this paper investigated the depth of critical chloride concentration and the concentration profile of chloride ion on the basis of in-situ core specimens. The core specimens are obtained at air-zone, splash zone, and tidal zone in Wando, Masan, Incheon, Gwangyang and Donghae harbors. Colorimetric method measured the chloride ion penetration depth, and ASTM C 114 and RCT test proposed by Germann Instruments evaluated the concentration profile of chloride ion. Based on experimental data, the influence of harbor location and vertical exposure condition on chloride ion penetration is evaluated. The analysis of experimental data showed that the surface chloride ion concentration increased with age of structure and the average of test results of surface chloride ion was 13.1 kg/m3. Also, the chloride ion diffusion coefficient decreased with age. Surface chloride ion concentration and chloride ion diffusion coefficient were not influenced by vertical exposure condition.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/28199
Bibliographic Citation
HPC 2011, pp.1 - 8, 2011
Publisher
New
Type
Conference
Language
English
Publisher
New
Related Researcher
Research Interests

Development of harbor structures,Analysis of harbor structures,Design of harbor structures,항만구조물개발,항만구조물해석,항만구조물설계

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse