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Title |
Analysis of the Effects of Deicing Solutions and Freeze?Thaw Cycles on the Mechanical Properties of Concrete
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Authors |
김우혁(Woo-Hyeok Kim) ; 양지수(Ji-Su Yang) ; 민근형(Geun-Hyeong Min) ; 신경준(Kyung Jun Shin) ; 김우석(WooSeok Kim) |
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DOI |
https://doi.org/10.4334/JKCI.2025.37.6.757 |
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Keywords |
사질화; 제설제; 동결융해; 압축강도 disintegration; D-ice; freeze and thawing; compressive strength |
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Abstract |
This study was conducted to quantitatively evaluate the effects of chloride penetration and freeze-thaw action in deicing environments on the physical performance of concrete. Concrete specimens were soaked in four different solutions?deionized water (DIW), sodium chloride (), calcium chloride (), and a mixed deicing solution (D-ice)?for 30, 60, and 180 days, followed by an equal number of freeze-thaw cycles. Compressive strength, ultrasonic pulse velocity, and relative dynamic modulus were measured under each condition. Specimens soaked in DIW and retained approximately 93 % and over 86 % of their initial compressive strength after the final test, respectively. In contrast, specimens soaked in and D-ice showed significant strength reductions, retaining only about 32 % and 64 % of their original strength, respectively, after 180 days and freeze-thaw testing. Ultrasonic pulse velocity decreased to 75 % and 74 % for DIW and , and to 59 % and 49 % for and D-ice, respectively. The relative dynamic modulus decreased to 89 % and 96 % under DIW and conditions, while and D-ice showed reductions to 70 % and 73 %, respectively. These results demonstrate the combined deterioration effects of deicing salt composition and repeated freeze-thaw cycles on the durability of concrete bridge decks.
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