Study of concrete strength and pore structure evolution under freeze-thaw-corrosion based on fractal dimension
文献类型：期刊论文
| 作者 | Guo, Haizhen2,3; Zhang, Rongling1,2,3; Wang, Yanshuai4; Xu, Weichen5; Wang, Xiaoping1,3; Zhang, Wenjing6 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2025-08-15 |
| 卷号 | 487页码:11 |
| 关键词 | Freeze-thaw-corrosion coupling effect Corrosion resistance coefficient Pore structure Fractal dimension Model validation |
| ISSN号 | 0950-0618 |
| DOI | 10.1016/j.conbuildmat.2025.141952 |
| 通讯作者 | Zhang, Rongling(mogzrlggg@163.com) |
| 英文摘要 | To investigate the effect of freeze-thaw-sulfate coupled erosion on the microscopic pore structure of concrete, this study simulates the on-site freeze-thaw corrosion environment to carry out erosion tests based on the actual environmental conditions in Wuwei of Gansu Province. The pore characteristics under different erosion cycles were characterized by nuclear magnetic resonance (NMR) techniques, and the fractal dimensions of the gel pores, transitional pores, capillary pores, and large pores were quantified by combining T-2 spectra with fractal theory. The evolution of the erosion resistance coefficient with erosion time was revealed through macroscopic tests, and the correlation models of fractal dimension, porosity with erosion resistance coefficient and pore tortuosity were established to verify the strength-porosity relationship through data fitting. The results show that the compressive strength and erosion resistance coefficient show a tendency to increase and then decrease with the increase of the number of coupled erosion. During the erosion process, the small pores inside the concrete continued to deteriorate and gradually connect to form large pores, the porosity showed a trend of decreasing and then increasing, and the pore volume ratio was transitional pores>gel pores>capillary pores>large pores in order. The pore tortuosity showed an increasing and then decreasing trend, with a significant negative correlation with porosity (R-2=0.9806), and a positive correlation with compressive strength and erosion resistance coefficient. The capillary fractal dimension tends to increase and then decrease and has the highest correlation coefficient with strength. The research results can provide a reference for the application of concrete in alpine saline soil areas. |
| WOS关键词 | SULFATE ATTACK ; DETERIORATION ; RESISTANCE ; DURABILITY ; FAILURE ; TIME |
| 资助项目 | National Natural Science Foundation of China and China Railway[U2368209] ; Gansu Provincial Department of Transportation Fund Project[2023-14] ; Science and Technology Research and Development Plan Project of Lanxin Railway Ganqing Co., Ltd[GQZL2024-131] |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001516337400007 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/201976]  |
| 专题 | 中国科学院海洋研究所 |
| 通讯作者 | Zhang, Rongling |
| 作者单位 | 1.Lanzhou Jiaotong Univ, State Local Joint Engn Lab Rd & Bridge Engn Disast, Lanzhou 730000, Gansu, Peoples R China 2.Lanzhou Jiaotong Univ, Sch Civil Engn, Lanzhou 730000, Gansu, Peoples R China 3.Survey & Design Inst Co Ltd, Gansu Prov Transportat Planning, Lanzhou 730000, Peoples R China 4.Shenzhen Univ, Sch Civil & Traff Engn, Shenzhen 518060, Guangdong, Peoples R China 5.Chinese Acad Sci, Inst Oceanog, Qingdao 266000, Shandong, Peoples R China 6.Gansu Acad Transportat Sci Grp Co Ltd, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Haizhen,Zhang, Rongling,Wang, Yanshuai,et al. Study of concrete strength and pore structure evolution under freeze-thaw-corrosion based on fractal dimension[J]. CONSTRUCTION AND BUILDING MATERIALS,2025,487:11. |
| APA | Guo, Haizhen,Zhang, Rongling,Wang, Yanshuai,Xu, Weichen,Wang, Xiaoping,&Zhang, Wenjing.(2025).Study of concrete strength and pore structure evolution under freeze-thaw-corrosion based on fractal dimension.CONSTRUCTION AND BUILDING MATERIALS,487,11. |
| MLA | Guo, Haizhen,et al."Study of concrete strength and pore structure evolution under freeze-thaw-corrosion based on fractal dimension".CONSTRUCTION AND BUILDING MATERIALS 487(2025):11. |
入库方式： OAI收割
来源：海洋研究所
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