A new approach for characterizing concrete deterioration under sulfate attack and its application: Insights from elastic modulus variation using indentation technology
文献类型：期刊论文
| 作者 | Yang, Fujian1,5; Liu, Yuan3; Zhao, Zhihao2; Song, Jinliang3; Hu, Dawei1,5; Zhou, Hui1,5; Zhou, Yuling4 |
| 刊名 | JOURNAL OF BUILDING ENGINEERING
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 98页码:15 |
| 关键词 | Concrete Sulfate attack Deterioration Suggested method Indentation technology |
| DOI | 10.1016/j.jobe.2024.111299 |
| 英文摘要 | Assessing the safety of concrete structures subjected to sulfate attack requires a thorough understanding of concrete deterioration degree and the depth of the deteriorated surface layer. However, the existing techniques either solely consider the depth of concrete deterioration or rely on macroscopic mechanical properties to assess the degree of deterioration of concrete, disregarding the non-uniform distribution pattern where deterioration initiates at the surface and diminishes with depth. To address this limitation, an approach utilizing indentation technology is proposed for determining the degree and depth of concrete deterioration caused by sulfate attack concurrently. Indentation technology, known for its efficacy in characterizing local mechanical properties, such as the elastic modulus of concrete, offers a promising solution. By measuring the variation of elastic modulus along the erosion direction in the deteriorated concrete, valuable insights into the degree and deterioration depth can be gained. This study employed a sulfate attack test on concrete specimens immersed in a 5 % NaSO4 solution, with the proposed method employed to determine the deterioration degree and depth. The results demonstrated that, with increasing exposure time (51, 86, 121, and 180 days), the deterioration depths reached 4.750, 7.425, 11.791, and 14.007 mm, respectively, while the corresponding deterioration degrees at a depth of 2 mm were 6.832 %, 18.806 %, 41.501 %, and 55.116 %. Comparing these findings with existing methods, the proposed method quantitatively characterizes the deterioration depth using micro-indentation technology, overcoming some of the limitations (e.g. immaturity or inapplicability). And, the evolution of the deterioration degree aligns with conclusions presented in published research. Furthermore, the results obtained through the new proposed method offers more accurate insights into the distribution of deterioration degree in concrete structures at various depths. Engineers can identify specific areas of deterioration accurately, targetting maintenance efforts more effectively, leading to improved longevity and durability of concrete structures. |
| 资助项目 | National Key Research and Development Program of China[2022YFE0137200] ; National Natural Science Foundation of China[52179114] ; National Natural Science Foundation of China[52309147] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001359528900001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/43209]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Hu, Dawei |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Henan Polytech Univ, Jiaozuo 454000, Peoples R China 3.Dalian Maritime Univ, Dalian 116026, Liaoning, Peoples R China 4.Hubei Geol Environm Stn, Wuhan 430034, Peoples R China 5.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Fujian,Liu, Yuan,Zhao, Zhihao,et al. A new approach for characterizing concrete deterioration under sulfate attack and its application: Insights from elastic modulus variation using indentation technology[J]. JOURNAL OF BUILDING ENGINEERING,2024,98:15. |
| APA | Yang, Fujian.,Liu, Yuan.,Zhao, Zhihao.,Song, Jinliang.,Hu, Dawei.,...&Zhou, Yuling.(2024).A new approach for characterizing concrete deterioration under sulfate attack and its application: Insights from elastic modulus variation using indentation technology.JOURNAL OF BUILDING ENGINEERING,98,15. |
| MLA | Yang, Fujian,et al."A new approach for characterizing concrete deterioration under sulfate attack and its application: Insights from elastic modulus variation using indentation technology".JOURNAL OF BUILDING ENGINEERING 98(2024):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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