Computers and Concrete

  • 제21권2호
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  • Pages.181-187
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  • 2018
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
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Prediction of steel corrosion in magnesium cement concrete based on two dimensional Copula function

  • Feng, Qiong (Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology) ;
  • Qiao, Hongxia (Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology) ;
  • Wang, Penghui (Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology) ;
  • Gong, Wei (Department of Civil Engineering,Nanjing University of Aeronautic and Astronautic)
  • 투고 : 2017.05.05
  • 심사 : 2017.10.19
  • 발행 : 2018.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

In order to solve the life prediction problem of damaged coating steel bar in magnesium cement concrete, this study tries to establish the marginal distribution function by using the corrosion current density as a single degradation factor. Representing the degree of steel corrosion, the corrosion current density were tested in electrochemical workstation. Then based on the Copula function, the joint distribution function of the damaged coating was established. Therefore, it is indicated that the corrosion current density of the bare steel and coated steel bar can be used as the boundary element to establish the marginal distribution function. By using the Frank-Copula function of Copula Archimedean function family, the joint distribution function of the damaged coating steel bar was successfully established. Finally, the life of the damaged coating steel bar has been lost in 7320d. As a new method for the corrosion of steel bar under the multi-dimensional factors, the two-dimensional Copula function has certain practical significance by putting forward some new ideas.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China, National Natural Science Foundation of Gansu

참고문헌

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