Changes of Physical and Mechanical Properties of Coral Reef Limestone under CO2-Seawater-Rock Interaction
文献类型：期刊论文
| 作者 | Zhong, Yu1,2; Li, Qi2,3 ; Wang, Ren2,3; Yao, Ting2,3
|
| 刊名 | APPLIED SCIENCES-BASEL
 |
| 出版日期 | 2022-05-01 |
| 卷号 | 12期号:9页码:- |
| 关键词 | coral reef limestone CO2-water-rock interaction mineral dissolution microstructure permeability CT scanning |
| 英文摘要 | Large amounts of anthropogenic CO2 in the atmosphere are taken up when the ocean alters the seawater carbonate system, which could have a significant impact on carbonate-rich sediments. Coral reef limestone is a special biogenic carbonate, which is mainly composed of calcium carbonate. When carbonate-rich rocks are brought into contact with a CO2 weak acid solution, they will be dissolved, which may affect the physical and mechanical properties of the rock. In this paper, the physical and chemical interactions between CO2, seawater and the framework structure reef limestone were studied based on an experiment conducted in a hydrothermal reactor. The solution was analyzed for dissolved Ca2+ concentration during the reaction, and the rock mass, effective volume (except for the volume of open pores), permeability, images from electron microscopy and X-ray microtomography were contrasted before and after immersion. The uniaxial compressive and tensile strength tests were conducted, respectively, to clarify the mechanical response of the rock after the reaction. The results indicate that dissolution occurred during the reaction, and the calcium ions of the solution were increased. The physical properties of the rock were changed, and the permeability significantly increased. Because the rocks were soaked for only 15 days, the total cumulative amount of calcium carbonate dissolved was less, and the mechanical properties were not affected. |
| 学科主题 | Chemistry ; Engineering ; Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000794795200001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35190]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; 2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 3.University of Chinese Academy of Sciences, Beijing 100049, China |
| 推荐引用方式 GB/T 7714 | Zhong, Yu,Li, Qi,Wang, Ren,et al. Changes of Physical and Mechanical Properties of Coral Reef Limestone under CO2-Seawater-Rock Interaction[J]. APPLIED SCIENCES-BASEL,2022,12(9):-. |
| APA | Zhong, Yu,Li, Qi,Wang, Ren,&Yao, Ting.(2022).Changes of Physical and Mechanical Properties of Coral Reef Limestone under CO2-Seawater-Rock Interaction.APPLIED SCIENCES-BASEL,12(9),-. |
| MLA | Zhong, Yu,et al."Changes of Physical and Mechanical Properties of Coral Reef Limestone under CO2-Seawater-Rock Interaction".APPLIED SCIENCES-BASEL 12.9(2022):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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