Temperature Effect on Service Life of Reinforced Concrete (RC) Structure Under Chemical Erosion: Deterministic and Probabilistic Approach
Source abstract
Abstract
With increasing exterior temperature, steel corrosion and concrete disintegration in RC (reinforced concrete) are severe due to the increased transport of harmful ions. A durability design for the intended service life should be ensured for the changing exterior conditions. In this study, for the concrete used in a UAE (United Arab Emirates) nuclear power plant structure, the diffusion coefficient of sulfate ions affected by temperature was evaluated through a natural diffusion cell test, and the service life in the structure was calculated through deterministic and probabilistic methods. As the temperature increased from 20 °C to 50 °C, the results decreased rapidly due to an enlarged diffusion coefficient, and its variation significantly increased with unstable ion transport. In the probabilistic method, the effect of the mean and COV (coefficient of variation) for each design parameter on service life was analyzed, which suggested the importance of enough cover depth design with COV under 0.2.
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Research context
OpenAlex topics: Concrete and Cement Materials Research · Concrete Corrosion and Durability · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Plant and Architectural Engineering, Kyonggi University, Suwon 16227, Republic of Korea
Department of Civil and Environmental Engineering, Hannam University, Daejeon 34430, Republic of Korea
Emirates Nuclear Technology Center & Department of Mechanical and Nuclear Engineering, Khalifa University of Science and Technology, Abu Dhabi 127788, United Arab Emirates
Funding
National Research Foundation of Korea (NRF)
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