Investigation of mechanical characterization and damage evolution of coral reef sand concrete using in-situ CT and digital volume correlation techniques
文献类型：期刊论文
| 作者 | Qin, Qinglong2,3; Wu, Kai1; Meng, Qingshan1; Gan, Manguang1; Yi, Panpan1 |
| 刊名 | JOURNAL OF BUILDING ENGINEERING
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 96页码:19 |
| 关键词 | Coral reef sand concrete In-situ CT Digital volume correlation techniques Damage Pore structure |
| DOI | 10.1016/j.jobe.2024.110480 |
| 英文摘要 | Coral reef sand concrete (CRSC) plays an indispensable role in island reef projects, but limited knowledge of its damage poses safety and stability concerns for coral reef sand concrete structures. Therefore, the in-situ computed tomography (CT) is employed to investigate the strength and deformation, and pore structure evolution of coral reef sand concrete under uniaxial load. Additionally, the crack propagation and three-dimensional strain field evolution under different stress states are revealed by the digital volume correlation (DVC) techniques. The results demonstrate that when the stress is below 35.79 MPa, the porosity gradually decreases as the stress increases. However, when the stress exceeds 35.79 MPa, the local porosity increases with the rising stress, and the porosity at 39.89 MPa is higher than the initial porosity. Moreover, stresses evidently concentrate at areas of local maximum porosity, resulting in the initiation and development of cracks in those regions. During the failure process, CRSC experiences splitting damage firstly caused by longitudinal cracks, followed by the extension of these cracks into oblique cracks, resulting in shear damage. Coral aggregate is the weak phase in CRSC, exhibiting transgranular fractures. Additionally, CRSC exhibits significant strain in the pores and coral aggregates, leading to crack development along the direction of the pores or coral aggregates. Therefore, this study offers a deeper understanding of the damage mechanisms of CRSC, providing theoretical support for its further research and practical application in far-sea projects. |
| 资助项目 | Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[SKLGME021026] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001316916700001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42595]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Meng, Qingshan |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Hong Kong Polytech Univ, Res Ctr Resources Engn Carbon Neutral, Hong Kong 999077, Peoples R China 3.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong 999077, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qin, Qinglong,Wu, Kai,Meng, Qingshan,et al. Investigation of mechanical characterization and damage evolution of coral reef sand concrete using in-situ CT and digital volume correlation techniques[J]. JOURNAL OF BUILDING ENGINEERING,2024,96:19. |
| APA | Qin, Qinglong,Wu, Kai,Meng, Qingshan,Gan, Manguang,&Yi, Panpan.(2024).Investigation of mechanical characterization and damage evolution of coral reef sand concrete using in-situ CT and digital volume correlation techniques.JOURNAL OF BUILDING ENGINEERING,96,19. |
| MLA | Qin, Qinglong,et al."Investigation of mechanical characterization and damage evolution of coral reef sand concrete using in-situ CT and digital volume correlation techniques".JOURNAL OF BUILDING ENGINEERING 96(2024):19. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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