Ocean Systems Engineering

  • 제2권2호
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  • Pages.159-171
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  • 2012
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  • 2093-6702(pISSN)
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  • 2093-677X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Impact of seawater corrosion and freeze-thaw cycles on the behavior of eccentrically loaded reinforced concrete columns

  • Diao, Bo (Department of Civil Engineering, Beihang Univ.) ;
  • Sun, Yang (Department of Civil Engineering, Beihang Univ.) ;
  • Ye, Yinghua (Department of Civil Engineering, Beihang Univ.) ;
  • Cheng, Shaohong (Department of Civil and Environmental Engineering, Univ. of Windsor)
  • 투고 : 2012.03.05
  • 심사 : 2012.06.12
  • 발행 : 2012.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

Reinforced concrete structures in cold coastal regions are subjected to coupled effects of service load, freeze-thaw cycles and seawater corrosion. This would significantly degrade the performance and therefore shorten the service life of these structures. In the current paper, the mechanical properties of concrete material and the structural behaviour of eccentrically loaded reinforced concrete columns under multiple actions of seawater corrosion, freeze-thaw cycles and persistent load have been studied experimentally. Results show that when exposed to alternating actions of seawater corrosion and freeze-thaw cycles, the compressive strength of concrete decreases with the increased number of freeze-thaw cycles. For reinforced concrete column, if it is only subjected to seawater corrosion and freeze-thaw cycles, the load resistance capacity is found to be reduced by 11.5%. If a more practical service condition of reinforced concrete structures in cold coastal regions is simulated, i.e., the environmental factors are coupled with persistent loading, a rapid drop of 15% - 26.9% in the ultimate capacity of the eccentrically loaded reinforced concrete column is identified. Moreover, it is observed that the increase of eccentric load serves to accelerate the deterioration of column structural behavior.

키워드

과제정보

연구 과제 주관 기관 : Chinese National Natural Science Foundation (NSF)

참고문헌

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피인용 문헌

  1. Analysis of the adhesive damage for different patch shapes in bonded composite repair of corroded aluminum plate vol.59, pp.1, 2016, https://doi.org/10.12989/sem.2016.59.1.123
  2. Combined Effects of Freeze-Thaw and Corrosion on Performance of RC Structures: State-of-the-Art Review vol.35, pp.5, 2021, https://doi.org/10.1061/(asce)cf.1943-5509.0001637