Durability Life Prediction of Reinforced Concrete Structure Corroded by Chloride Based on the Gamma Process
Publication: ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
Volume 7, Issue 4
Abstract
In this paper, a new method for durability life prediction of reinforced concrete structures in a chlorine-eroded environment is presented based on the Gamma process. The Gamma process model is established based on the simulation data of chloride ion concentration on the surface of reinforced concrete structures, and the life of reinforced concrete structures is predicted. First, according to the chloride diffusion theory, through using the finite difference chloride diffusion model proposed in this paper under the action of multiple factors, a group of reinforced concrete reinforcement surface chloride concentration data are simulated using MATLAB. Similarly, the durability life data of reinforced concrete structures are simulated using the Monte Carlo method. Furthermore, a Gamma process model is developed based on the simulation data, and the life of a reinforced concrete structure is predicted based on the Gamma process. Finally, the correctness of the proposed method is verified through comparing the curve diagram of probability density function of the durability life of the Gamma process and the frequency histogram of the durability life obtained by the Monte Carlo simulation.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published paper.
Acknowledgments
This work was jointly supported by the Research Project of the Educational Commission of Hunan Province (Grant No. 19B020), and the National Natural Science Foundation of China (Grant Nos. 51678067 and 51808054).
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© 2021 American Society of Civil Engineers.
History
Received: Dec 23, 2020
Accepted: Jun 17, 2021
Published online: Aug 28, 2021
Published in print: Dec 1, 2021
Discussion open until: Jan 28, 2022
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