Abrasion resistance of concrete under coupled debris flow and freeze-thaw cycles | |
Wu, Fan; Chen, Xiaoqing; Chen, Jiangang | |
刊名 | WEAR |
2023-07-15 | |
卷号 | 524页码:21 |
关键词 | Abrasion resistance Abrasion mechanism Freeze-thaw cycles Fibre-reinforced concrete Debris flow |
ISSN号 | 0043-1648 |
DOI | 10.1016/j.wear.2023.204805 |
英文摘要 | In cold regions, the coupled actions of freeze-thaw cycles and debris flow abrasion cause severe deterioration of concrete structures. The effects of freeze-thaw cycles (0, 10, 30, 50, 70), debris flow velocities (2.5 m/s, 3.0 m/s, 3.5 m/s), and abrasion modes (abrasion-freeze, freeze-abrasion) on the abrasion resistance are investigated in this study to enhance the anti-abrasion performance of concrete. Abrasion rate, abrasion depth, abrasion morphology, and abrasion failure mechanism of concrete are discussed. The results show that the abrasion resistance of concrete decreases with the increase of debris flow velocities and freeze-thaw cycles. The abrasion failure degree of concrete is exacerbated by freeze-thaw cycles. The abrasion rate of the reference concrete (R) increases by 62.5-117.7% after 70 freeze-thaw cycles, compared to the unfrozen concrete. Furthermore, the freeze-abrasion mode loses more strength and mass loss than the abrasion-freeze mode, particularly at high freeze-thaw cycles. When compared to the mass loss caused by freeze-thaw cycles, abraded mass loss is the primary cause of concrete mass loss under coupled freeze-thaw cycles and debris flow abrasion. Due to improved mechanical strengths, steel fibre-reinforced concrete performs well under coupled freeze-thaw cycles and debris flow abrasion conditions. |
资助项目 | National Natural Science Foundation of China[52108358] ; National Natural Science Foundation of China[41925030] ; China Postdoctoral Science Foundation[2021M693110] ; International Postdoctoral Exchange Fellowship Program[PC2022052] ; Special Assistant Research Project of Chinese Academy of Sciences[2021000036] |
WOS关键词 | DURABILITY ; EROSION ; WEAR ; STRENGTH |
WOS研究方向 | Engineering ; Materials Science |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE SA |
WOS记录号 | WOS:000988677000001 |
资助机构 | National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; International Postdoctoral Exchange Fellowship Program ; Special Assistant Research Project of Chinese Academy of Sciences |
内容类型 | 期刊论文 |
源URL | [http://ir.imde.ac.cn/handle/131551/57386] |
专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
通讯作者 | Chen, Xiaoqing |
作者单位 | Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610299, Peoples R China |
推荐引用方式 GB/T 7714 | Wu, Fan,Chen, Xiaoqing,Chen, Jiangang. Abrasion resistance of concrete under coupled debris flow and freeze-thaw cycles[J]. WEAR,2023,524:21. |
APA | Wu, Fan,Chen, Xiaoqing,&Chen, Jiangang.(2023).Abrasion resistance of concrete under coupled debris flow and freeze-thaw cycles.WEAR,524,21. |
MLA | Wu, Fan,et al."Abrasion resistance of concrete under coupled debris flow and freeze-thaw cycles".WEAR 524(2023):21. |
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