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Title |
Comprehensive Review of Domestic and International Concrete Durability Designs
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Authors |
김유진(Yu Jin Kim) ; 김진호(Jinho Kim) ; 권성준(Seung-Jun Kwon) ; 장승엽(Seung Yup Jang) ; 김형기(Hyeong-Ki Kim) |
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DOI |
https://doi.org/10.4334/JKCI.2026.38.4.515 |
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Keywords |
내구성 설계; 시방설계; 성능기반설계; 내구성 지표; 대체결합재 durability design; prescriptive design; performance-based design; durability indicators; alternative binders |
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Abstract |
This paper presents a comprehensive review of concrete durability design codes and guidelines currently applied worldwide, with a focus on the structural characteristics and practical issues of existing durability design frameworks. Particular attention is given to the Korean durability design code, KDS 14 20 40, which adopts a hybrid system allowing both prescriptive design and performance-based designs. The fundamental concepts of these two approaches and the characteristics of their resulting design outcomes are comparatively examined. The review indicates that, even under identical exposure conditions and target service lives, the concrete cover depths determined by different design approaches can differ significantly. In addition, key durability indicators, such as the chloride diffusion coefficient and carbonation rate coefficient, exhibit considerable variability depending on the testing methods and conditions. Field measurement data obtained from long-term in-service concrete structures further suggest that laboratory-based durability indicators may not fully represent the long-term behavior of actual structures. Furthermore, considering recent changes in design environments, including external exposure conditions, deicing salt exposure, and the increasing use of alternative binders, the applicability of conventional experience-based durability design approaches is shown to be limited in certain cases.
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