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Title |
Experimental Evaluation of the Impact of Initial Chloride Content on the Properties of Concrete and Corrosion Risk of Rebars
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Authors |
정철우(Chul-Woo Chung) ; 노강민(Gang Min Noh) ; 아비츄 미카엘 리에우(Gebremicael Liyew) ; 권성준(Seung-Jun Kwon) ; 장승엽(SeungYup Jang) ; 김형기(Hyeong-Ki Kim) |
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DOI |
https://doi.org/10.4334/JKCI.2025.37.3.337 |
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Keywords |
초기염화물; 내구성; 콘크리트; 철근부식; 임계염화물량 Initial chloride content; durability; concrete; corrosion; critical chloride content |
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Abstract |
A series of experimental studies was conducted to reassess the maximum allowable initial chloride content in concrete as specified by relevant standards. Various properties were evaluated, including the slump and air content of fresh concrete, as well as the porosity, strength, elastic modulus, and chloride penetration resistance of hardened concrete, all with varying levels of initial chloride content. In addition, the corrosion risk to reinforcing steel embedded in concrete with varying initial chloride content was evaluated. The experimental results revealed that, in terms of both fresh and hardened concrete properties, initial chloride content up to 0.4 wt.% of the binder had no adverse effects. Furthermore, concrete with initial chloride content ranging from 0 to 0.4 wt.% of the binder exhibited a low risk of reinforcement corrosion.
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