A novel test method for characterizing tempo-spatial variations in elastic modulus of underwater concrete
文献类型：期刊论文
| 作者 | Yang, Fujian1,3; Li, Ruixin4; Hu, Dawei1,3; Iqbal, Sayed Muhammad1,3; Zhou, Hui1,3; Guo, Feng2 |
| 刊名 | JOURNAL OF BUILDING ENGINEERING
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 76页码:17 |
| 关键词 | Durability testing Coupling erosion Stress state Indentation technique Elastic modulus |
| DOI | 10.1016/j.jobe.2023.107096 |
| 英文摘要 | Concrete structures used in underwater engineering, such as immersed tube tunnels, are subject to a range of challenging coupling circumstances including mechanical load (M), fluid flow (F), fluid pressure (P), and chemical attack (C). Concrete in different areas also experiences compressive or tensile stress under mechanical load. However, most experimental setups only consider limited coupling scenarios, such as M-C, M-F-C, or M-P-C, and the sample is typically in a single stress state, either compressive or tensile. To overcome these limitations, a novel stressseepage-chemical coupling erosion setup (SSC-CES) was developed to perform durability tests on concrete. This setup allows for simulation of the service conditions of an immersed tube tunnel, including M-F-P-C coupling and distribution of compressive and tensile stresses. This study presents also a detailed description of the setup's components, configurations, and working principles, and discuss how sealing and alignment problems for the sample were addressed to ensure accurate fluid pressure and stress loading. The indentation technique was furthermore applied to obtain the local mechanical properties of different erosion areas, enabling analysis of tempo-spatial variations in elastic modulus. Finally, a test was conducted to examine the M-F-P-C coupling effect using the developed SSC-CES and indentation technique. Results indicated that the elastic modulus weakened from the erosion surface and gradually approached the initial value with increasing depth. Additionally, it showed a transition from slight increase to gradual decrease with erosion time. Notably, the elastic modulus in the tensile stress area was considerably lower than that in the compression stress area. These test results confirm the reliability of the developed SSC-CES and the rationality of the analysis method using micro-indentation technology. The system effectively supports the study of durability evaluation of immersed tube tunnels under M-F-P-C coupling. |
| 资助项目 | National Key Research and Development Program of China[2019YFC0605104] ; National Key Research and Development Program of China[52179114] ; National Natural Science Foundation of China[41941018] ; [2019YFC0605103] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001059060300001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39286]  |
| 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.Foshan Shunde Dist Engn Construct Ctr, Foshan 528000, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Wuhan Univ, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Fujian,Li, Ruixin,Hu, Dawei,et al. A novel test method for characterizing tempo-spatial variations in elastic modulus of underwater concrete[J]. JOURNAL OF BUILDING ENGINEERING,2023,76:17. |
| APA | Yang, Fujian,Li, Ruixin,Hu, Dawei,Iqbal, Sayed Muhammad,Zhou, Hui,&Guo, Feng.(2023).A novel test method for characterizing tempo-spatial variations in elastic modulus of underwater concrete.JOURNAL OF BUILDING ENGINEERING,76,17. |
| MLA | Yang, Fujian,et al."A novel test method for characterizing tempo-spatial variations in elastic modulus of underwater concrete".JOURNAL OF BUILDING ENGINEERING 76(2023):17. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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