This study aims to examine the degradation patterns of channel-lining concrete in freeze–thaw cycles in north China. Experimental investigations were conducted to analyze the mechanical properties, surface morphology, and microscopic porosity of the concrete. The U-Net model was employed to perform semantic segmentation on scanning electron microscopy (SEM) images which enhance the accuracy and efficiency of the identification of minute pores. First, its apparent and microscopic pore perimeter area was calculated using the Image Pro Plus image analysis software. The apparent and microscopic fractal dimensions were then computed using fractal theory principles. The experimental results indicated a degradation in the mechanical properties and an increase in the fractal dimension as a consequence of freeze–thaw cycles. The integration of concrete’s internal damage evolution characteristics with the apparent fractal dimension allows for a quantitative analysis of concrete’s damage characteristics when subjected to freezing and thawing. The study also enables the prediction of microscopic damage, facilitating the timely assessment of overall damage to the concrete lining of the channel system. Consequently, it will promptly develop an emergency maintenance plan for the concrete of the channel system.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Fractal Characterization of Channel-Lining Concrete Based on U-Net Deep Learning under Freeze–Thaw Cycles


    Additional title:

    Transportation Research Record: Journal of the Transportation Research Board


    Contributors:
    Zou, Chunxia (author) / Sun, Haoran (author) / Tang, Jiajun (author) / Song, Yuxin (author) / Zhang, Qiyi (author) / Bian, Ziwei (author)


    Publication date :

    2024-12-12




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Deformation Research of Silty Clay under Freeze-Thaw Cycles

    Tian, Lihui / Yu, Liangliang / Liu, Shiming et al. | Springer Verlag | 2020


    Bond Strength between Recycled Concrete and Rebar under Stirrup Constraint after Freeze-thaw Cycles

    Li, Zuohua / Deng, Zhiheng / Yang, Haifeng et al. | Springer Verlag | 2023



    Evaluation of Cracking in Biochar-Amended Clayey Soil Under Freeze–Thaw Cycles

    Hewage, Shaini Aluthgun / Roksana, Kaniz / Tang, Chao Sheng et al. | Transportation Research Record | 2023


    Freeze-Thaw Studies on Concrete Structural Elements

    GangaRao, Hota V.S. | Online Contents | 1993