Damage degradation pattern and life time prediction of solidified red mud under coupled environment of corrosive salt and freeze-thaw cycles

被引:1
|
作者
Cui, Wenwen [1 ]
Dong, Xiaoqiang [1 ,2 ]
Yang, Fan [1 ]
He, Gaole [1 ]
Zhao, Ruiyang [1 ]
机构
[1] Taiyuan Univ Technol, Dept Civil Engn, located 79 West Yingze St, Taiyuan 030024, Shanxi, Peoples R China
[2] Civil Engn Disaster Prevent & Control Key Lab Shan, Situated 79 West Yingze St, Taiyuan 030024, Shanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
Red mud; Durability; Freeze -thaw cycles; Environmental performance; Weibull model; DURABILITY; CONCRETE;
D O I
10.1016/j.conbuildmat.2024.137455
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
In response to the global issue of red mud accumulation and its environmental risks, this study investigates the damage and lifespan of red mud in harsh environments, aiming to assess its potential as a building material. Utilizing Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Electrochemical Impedance Spectroscopy (EIS), and industrial CT scanning techniques, the research finds that freeze-thaw cycles significantly alter the microstructure, chemical, and electrochemical properties of solidified red mud. SEM analysis reveals that freeze-thaw cycles roughen the red mud surface and increase cracks; XRD reveals a slight decrease in the diffraction peak intensity of amorphous phases (such as aluminosilicates); FTIR indicates that the Si -O -T asymmetric stretching vibration band narrows and shifts slightly to higher wavenumbers; EIS analysis points to a decline in electrochemical performance; CT scans observe an increase in porosity and number, proving structural degradation. Despite only a 1.66 % loss in mass after 10 freezethaw cycles, losses in dynamic modulus of elasticity and strength are notably higher, with strength loss reaching 3.95 %, indicating serious impacts of freeze-thaw cycles on the structure and performance of solidified red mud. However, hazardous element leaching tests show that, even under severe conditions, the leaching of solidified red mud still meets the World Health Organization (WHO) safety standards, demonstrating its environmental performance. Durability assessment using the weibull model indicates that dynamic modulus of elasticity and strength are key indicators, both of which fall below failure thresholds after 40 and 118 freeze-thaw cycles, respectively. These findings guide red mud 's use in harsh conditions, support enhancing its frost resistance, and promote its eco-friendly building material potential.
引用
收藏
页数:13
相关论文
共 50 条
  • [1] Deterioration Effects and Microscopic Mechanisms of Solidified/Stabilized Red Mud by CGFPA Binders Under Freeze-Thaw Cycles
    Yan, Lijun
    Yang, Junjie
    Wu, Yalei
    Li, Fengmin
    MATERIALS, 2025, 18 (03)
  • [2] Experimental Study on Damage Characteristics of Solidified Mud under Coupling Action of Freeze-Thaw Cycle and Chloride Salt
    Zhang, Jinsong
    Wang, Yaxing
    Pang, Jianyong
    Lu, Yu
    Bu, Yishun
    GEOFLUIDS, 2022, 2022
  • [3] SERVICE LIFE PREDICTION OF BASALT FIBER REINFORCED CONCRETE UNDER SALT FREEZE-THAW CYCLES
    Xu, Wenjie
    LI, Zhirui
    CIVIL ENGINEERING JOURNAL-STAVEBNI OBZOR, 2022, 31 (01): : 222 - 234
  • [4] Morphological damage and strength deterioration of red sandstone under freeze-thaw cycles
    Wang, Jincheng
    Cui, Deshan
    Chen, Qiong
    Chen, Juxiang
    Dai, Mingjie
    JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING, 2025, 17 (02) : 671 - 687
  • [5] Coupled effects of chemical environments and freeze-thaw cycles on damage characteristics of red sandstone
    Gao, Feng
    Wang, Qiaoli
    Deng, Hongwei
    Zhang, Jian
    Tian, Weigang
    Ke, Bo
    BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2017, 76 (04) : 1481 - 1490
  • [6] Investigation of damage behaviors of ECC-to-concrete interface and damage prediction model under salt freeze-thaw cycles
    Tian, Jun
    Wu, Xiaowei
    Zheng, Yu
    Hu, Shaowei
    Ren, Wei
    Du, Yinfei
    Wang, Wenwei
    Sun, Can
    Ma, Jie
    Ye, Yuxiao
    CONSTRUCTION AND BUILDING MATERIALS, 2019, 226 : 238 - 249
  • [7] Damage Model of Concrete Durability under Coupled Action of Stress and Freeze-thaw Cycles
    Zheng Dan
    Zhou Jianting
    ADVANCES IN BUILDING MATERIALS, PTS 1-3, 2011, 261-263 : 182 - +
  • [8] Study on damage degradation and radon emission from uranium tailing polymer-solidified soil under freeze-thaw cycles
    Fuliang Jiang
    Yuying Hao
    Haonan Wu
    Yong Liu
    Zhe Wang
    Biao Tan
    Chao Zhang
    Ming Lan
    Journal of Radioanalytical and Nuclear Chemistry, 2022, 331 : 1573 - 1583
  • [9] Study on damage degradation and radon emission from uranium tailing polymer-solidified soil under freeze-thaw cycles
    Jiang, Fuliang
    Hao, Yuying
    Wu, Haonan
    Liu, Yong
    Wang, Zhe
    Tan, Biao
    Zhang, Chao
    Lan, Ming
    JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 2022, 331 (04) : 1573 - 1583
  • [10] Strength degradation characteristics and damage constitutive model of sandstone under freeze-thaw cycles
    Wang, Zhongwen
    Yu, Meilu
    Wang, Lei
    Xie, Haotian
    Xu, Ying
    Wang, Luyu
    SCIENTIFIC REPORTS, 2024, 14 (01):