Numerical Simulation on Diffusion Behavior of Corrosion Ion in Concrete under Fatigue

被引：0

作者：

He, Wenzheng ^{[1
]}

He, Jing ^{[2
]}

机构：

[1] School of Urban Construction Engineering, Chongqing Open University, Chongqing

[2] Department of Mathematics and Science, Chongqing College of Mobile Communication, Chongqing

来源：

Journal of Engineering Science and Technology Review | 2024年 / 17卷 / 05期

关键词：

Concrete; Corrosive ion; Diffusion; Fatigue load;

D O I：

10.25103/jestr.175.13

中图分类号：

学科分类号：

摘要：

In corrosive environments, concrete structures, such as roads and tunnel inverts, are adversely affected by the combined effects of corrosion and fatigue loading. Fatigue loading accelerates the transmission of corrosion ions, resulting in a rapid degradation of structural performance. To examine the transmission law of corrosion ions under fatigue load, this study proposed an unsteady transmission model of corrosion ions in concrete. In view of the interaction between composite corrosion ions, a set of sulfate–chloride ion coupling transmission equations was established based on Fick's second law. Subsequently, fatigue load parameters were introduced into the corrosion ion diffusion coefficient function according to the concrete fatigue equation, and a corrosion ion transport model under fatigue load was established. Moreover, the influence of fatigue parameters on ion transport behavior was discussed based on parameter analysis. Results demonstrate that fatigue load can accelerate the transmission of corrosion ions, and the corrosion rate is positively related to loading frequency and stress level. However, when the stress level is less than 0.2, fatigue load has little effect on the transmission rate of corrosion ions. This study establishes a link between fatigue load and corrosion ion transport behavior and provides a method for assessing the durability of concrete in corrosive environments. © (2024), (International Hellenic University - School of Science). All rights reserved.

引用

页码：94 / 103

页数：9

共 21 条

[1]

Wang J. B., Niu D. T., He H., Wang B., Durability degradation of lining shotcrete exposed to compound salt, China Civ. Eng. J, 52, 9, pp. 79-90, (2019)

[2]

Ikumi T., Segura I., Numerical assessment of external sulfate attack in concrete structures. A review, Cement Concrete Res, 121, pp. 91-105, (2019)

[3]

Zahedi A., Saliba L., Sanchez L. F. M., Boyd A. J., Reliability of the Damage Rating Index to Assess Condition of Concrete Affected by External Sulfate Attack, Mag. Concrete Res, 75, 3, pp. 135-148, (2023)

[4]

Fernando Silva Y., Delvasto S., Valencia W., Araya-Letelier G., Performance of Self-Compacting Concrete with Residue of Masonry and Recycled Aggregate under Sulfate Attack, J. Mater. Civil Eng, 36, 1, (2024)

[5]

Uwanyuze R. S., Enright L., Zhang J. Y., Schaffoner S., Preparation of concrete specimen for internal sulfate attack analysis using electron backscatter diffraction, Int. J. Appl. Ceram. Tec, 19, 3, pp. 1195-1207, (2022)

[6]

Cefis N., Tedeschi C., Comi C., External sulfate attack in structural concrete made with Portland-limestone cement: an experimental study, Can. J. Civil Eng, 48, 7, pp. 731-739, (2021)

[7]

Tanyildizi H., Microstructure and Mechanical Properties of Polymer- Phosphazene Mortar Exposed to Sulfate Attack, ACI Mater. J, 116, 4, pp. 201-208, (2019)

[8]

Soleimanirad M., Rahmani H., The Effect of Chloride Ions on the Resistance of Concretes Containing Aerogel Under Sodium Sulfate Attack, Int. J. Civ. Eng, 20, 5, pp. 501-512, (2022)

[9]

Nie L. X., Xu J. Y., Bai E. L., Dynamic stress-strain relationship of concrete subjected to chloride and sulfate attack, Constr. Build Mater, 165, pp. 232-240, (2018)

[10]

Rusati P. K., Song K. I., Magnesium chloride and sulfate attacks on gravel-sand-cement-inorganic binder mixture, Constr. Build Mater, 187, pp. 565-571, (2018)

← 1 2 3 →