基于X-Ray CT扫描的钢筋混凝土锈蚀膨胀开裂试验研究
Experimental Study on Corrosion Cracking of Reinforced Concrete Based on X-Ray CT Scanning
DOI: 10.12677/HJCE.2024.133029, PDF,   
作者: 李 里：同济大学土木工程学院地下建筑与工程系，上海；黄 昕*：同济大学土木工程学院地下建筑与工程系，上海；新疆大学建筑工程学院，新疆 乌鲁木齐
关键词: 钢筋锈蚀试验；CT扫描；孔隙分割；锈胀裂缝；Reinforcement Corrosion Test； Computed Tomography (CT) Scanning； Pore Segmentation； Corrosion-Induced Cracks
摘要: 为探究氯盐环境下混凝土中钢筋锈蚀导致混凝土开裂的细观机制，本文浇筑了带有钢筋的混凝土方块试件。试验过程中对试件进行单面浸泡，并施加恒定电流诱导钢筋锈蚀，当裂缝开展至浸泡溶液液面下降过快时停止通电，试验过程中记录混凝土表面裂缝的开展情况。在试验前后分别对试件进行一次X-Ray CT扫描，基于Avizo软件对扫描结果进行处理。通过Avizo对混凝土内的钢筋、孔隙和裂缝进行分割，有效地提取了试件中出现的宏观裂缝，统计了钢筋的锈蚀规律，分析了钢筋锈蚀导致的裂缝发展的细观尺度特征。
Abstract: In this paper, to investigate the microscopic mechanism of steel corrosion-induced concrete cracking in chloride salt environments, concrete blocky specimens embedded by steel bars were cast. During the experiment, the specimens were soaked on one side and a constant current was applied to accelerate steel corrosion. When the cracks developed and the liquid level of the soaking solution dropped too quickly, the power was cut off. The crack propagation on the concrete surface was recorded during the experiment. X-Ray CT scanning was performed on the specimens before and after the experiment, and the scanned images were processed using Avizo software. Through Avizo, the steel bars, pores, and cracks inside the concrete were segmented, the macroscopic cracks that appeared in the specimens were effectively extracted, the corrosion rule of the steel bars was calculated, and the microscopic characteristics of the crack development caused by steel bar corrosion were analyzed.
文章引用：李里, 黄昕. 基于X-Ray CT扫描的钢筋混凝土锈蚀膨胀开裂试验研究[J]. 土木工程, 2024, 13(3): 257-268. https://doi.org/10.12677/HJCE.2024.133029

参考文献

[1] 施锦杰, 孙伟. 混凝土中钢筋锈蚀研究现状与热点问题分析[J]. 硅酸盐学报, 2010, 38(9): 1753-1764.
[2] Zhao, Y.X., Ren, H.Y., Dai, H. and Jin, W.L. (2011) Composition and Expansion Coefficient of Rust Based on X-Ray Diffraction and Thermal Analysis. Corrosion Science, 53, 1646-1658. [Google Scholar] [CrossRef] 
[3] Feng, W.P., Tarakbay, A., Memon, S.A., Tang, W.C. and Cui, H.Z. (2021) Methods of Accelerating Chloride-Induced Corrosion in Steel-Reinforced Concrete: A Comparative Review. Construction and Building Materials, 289, Article ID: 123165. [Google Scholar] [CrossRef] 
[4] Liu, Q.F., Easterbrook, D., Yang, J. and Li, L.Y. (2015) A Three-Phase, Multi-Component Ionic Transport Model for Simulation of Chloride Penetration in Concrete. Engineering Structures, 86, 122-133. [Google Scholar] [CrossRef] 
[5] 汪奔, 王弘, 张志强, 等. 三维随机凹凸型混凝土骨料细观建模方法研究[J]. 应用力学学报, 2018, 35(6): 1072-1076+1187-1188.
[6] 张龙飞, 谢浩, 陈燕伟, 等. 基于激光扫描的细观混凝土模型[J]. 中国科学: 技术科学, 2022, 52(7): 1121-1133.
[7] 潘子超, 李天华, 阮欣. 基于贝塞尔曲线的卵石骨料混凝土细观模型[J]. 同济大学学报(自然科学版), 2020, 48(5): 638-644.
[8] 尚明刚, 张云升, 何忠茂, 等. 盐渍土环境下钢筋混凝土恒电流加速锈蚀试验及可靠性分析[J]. 建筑材料学报, 2022, 25(7): 751-759.
[9] Michel, A., Pease, B.J., Geiker, M.R., Stang, H. and Olesen, J.F. (2011) Monitoring Reinforcement Corrosion and Corrosion-Induced Cracking Using Non-Destructive X-Ray Attenuation Measurements. Cement and Concrete Research, 41, 1085-1094. [Google Scholar] [CrossRef] 
[10] Tang, F.J., Lin, Z.B., Chen, G.D. and Yi, W.J. (2014) Three-Dimensional Corrosion Pit Measurement and Statistical Mechanical Degradation Analysis of Deformed Steel Bars Subjected to Accelerated Corrosion. Construction and Building Materials, 70, 104-117. [Google Scholar] [CrossRef] 
[11] 蒋昊宇. 钢筋混凝土非均匀锈胀三维损伤劣化对氯盐传输的影响[D]: [博士学位论文]. 杭州: 浙江大学, 2021.
[12] 游全伟, 王薇, 南纯, 等. 基于CT图像的混凝土细观模型构建方法研究[J]. 铁道科学与工程学报, 2023, 20(9): 3385-3395.
[13] El Maaddawy, T.A. and Soudki, K.A. (2003) Effectiveness of Impressed Current Technique to Simulate Corrosion of Steel Reinforcement in Concrete. Journal of Materials in Civil Engineering, 15, 41-47. [Google Scholar] [CrossRef] 
[14] 张昕. 基于围观XCT图像的超高性能纤维混凝土三维细观断裂模拟[D]: [博士学位论文]. 杭州: 浙江大学, 2022.

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