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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.13 No.1
- 발행연도
- 2019.1
- 수록면
- 1 - 18 (18page)
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초록· 키워드
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A numerical model for enhanced service life prediction of concrete infrastructure is presented which includes transient analysis of processes during corrosion initiation as well as propagation stage. The temporal and spatial transition of Steel–Concrete Interface during depassivation events is described by a randomly varying chloride threshold function. As such random activation events can be accounted for, rather than having to pre-describe the anode size and location as in many existing models. The aim of the study is to investigate random spatial activation events in concrete structures in submerged zones based on dynamically changing boundary conditions on the rebar surface to control transition from passive to active state. Investigations are carried out to realize the sustainability of corrosion processes in limiting oxygen concentrations in dissolved seawater. The model showcases the numerical architecture, the associated concept of randomly varying chloride threshold and predicts that among other factors, the rate of oxygen strongly influences corrosion rate in submerged locations.
목차
Abstract
1. Introduction
2. Mathematical Formulation of Physical Processes
3. Numerical Case Study
4. Results and Discussion
5. Conclusion
6. Future Scope
References
참고문헌 (79)
참고문헌 신청
Alonso, C., Andrade, C., Castellote, M., & Castro, P. (2000). Chloride threshold values to depassivate reinforcing bars embedded in a standardized OPC mortar. Cement and Concrete Research, 30(7), 1047?1055.
Andrade, C., Diez, L. M., & Alonso, C. (1997). Mathematical modeling of a concrete surface “skin effect” on diffusion in chloride contaminated media. Advanced Cement Based Materials, 6(2), 39?44.
Angst, U. (2018). Challenges and opportunities in corrosion of steel in concrete. Materials and Structures, 51, 4.
Angst, U., & Elsener, B. (2015). Forecasting chloride-induced reinforcement corrosion of concrete-effect of realistic reinforcement steel surface conditions. In 4th international conference on concrete, repair, rehabilitation and retrofitting (ICCC RRR ), Leipzig, Germany.
Angst, U. M., & Elsener, B. (2017). The size effect in corrosion greatly influences the predicted life span of concrete infrastructures. Science Advances, 3(8), e1700751.
Andrade, C., Diez, L. M., & Alonso, C. (1997). Mathematical modeling of a concrete surface “skin effect” on diffusion in chloride contaminated media. Advanced Cement Based Materials, 6(2), 39?44.
Angst, U. (2018). Challenges and opportunities in corrosion of steel in concrete. Materials and Structures, 51, 4.
Angst, U., & Elsener, B. (2015). Forecasting chloride-induced reinforcement corrosion of concrete-effect of realistic reinforcement steel surface conditions. In 4th international conference on concrete, repair, rehabilitation and retrofitting (ICCC RRR ), Leipzig, Germany.
Angst, U. M., & Elsener, B. (2017). The size effect in corrosion greatly influences the predicted life span of concrete infrastructures. Science Advances, 3(8), e1700751.
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차량 침수 시 탈출 보조 장치
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