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Title |
Comparison of Correlation between Chloride Diffusion and Pores Characteristics in Concrete Cured under Extreme Condition
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Authors |
최소영(So Yeong Choi) ; 양성준(Seong Joon Yang) ; 김일순(Il Sun Kim) ; 양은익(Eun Ik Yang) |
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DOI |
https://doi.org/10.11112/jksmi.2023.27.4.54 |
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Keywords |
염화물 확산 계수; 압축강도; 양생; 가혹 조건; 공극 분포; 공극률; 상대습도; 온도 Chloride diffusion coefficient; Compressive strength; Curing; Extreme condition; Pore distributions; Porosity; Relative Humidity; Temperature |
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Abstract |
In this paper, the compressive strength, pore characteristics, and chloride diffusion coefficient were measured at 28 days of age in order to examine the influence of curing conditions for the chloride diffusion and pores in concrete cured under extreme condition. According to the test results, the compressive strength was improved as the relative humidity increased. Additionally, higher compressive strength was observed when the specimens were cured at 35°C. However, the compressive strength of specimens cured at 45°C was decreased. Meanwhile, the chloride diffusion coefficient decreased with an increase in curing temperature and relative humidity, indicating a difference compared to the trend observed for compressive strength. On the other hand, the excellent correlation showed between compressive strength and chloride diffusion coefficient, porosity and chloride diffusion coefficient when the concrete cured under water. However, when the concrete cured under extreme condition, this correlation was significantly reduced compared to the water curing case. In contrast, it has been determined that there is no significant correlation between the average pore size and chloride diffusion coefficient, regardless of the curing conditions.
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