Study on the effect of CaCO3 whiskers on carbonized self-healing cracks of cement paste: Application in CCUS cementing
文献类型：期刊论文
| 作者 | Gong, Peng3,4; Zhang, Chunmei3,4; Wu, Zhiqiang2; Zhang, Gaoying3,4; Mei, Kaiyuan1; Gao, Qiang3,4; Cheng, Xiaowei3,4 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2022-02-28 |
| 卷号 | 321页码:12 |
| 关键词 | CCUS CaCO3 whiskers Carbonization Self-healing mu-CT |
| ISSN号 | 0950-0618 |
| DOI | 10.1016/j.conbuildmat.2022.126368 |
| 英文摘要 | The cracking damage of the CCUS downhole cement sheath is inevitable. In this study, a high concentration of CO2 reacted with the CaCO3 whiskers to induce CaCO3 deposition so as to improve the self-healing performance of the cement paste cracks. The characterization techniques such as compressive strength meter, mu-CT, X-ray diffractometer (XRD), thermogravimetric analyzer (TG) and environmental scanning electron microscope (ESEM) were used to study the effect of the CaCO3 whiskers on the self-healing performance of cement. The compressive strength growth of the cement pastes with and without the incorporation of the CaCO3 whiskers after carbonation self-healing reaction for 28 days was 1133% and 960%, respectively. The analysis of the crack volume of the cement pastes before and after carbonization by mu-CT revealed that the self-healing rate of the crack volume of the cement paste mixed with the CaCO3 whiskers was 55.24%, which was 18.32% higher than the system without any CaCO3 whiskers. In addition, the XRD and TG analyses demonstrated that the content of Ca(OH)(2) in the cracks of the CaCO3 whisker cement decreased on increasing the carbonization time, which indicated that the CaCO3 whisker cement had a high extent of Ca(OH)(2) involved in the carbonization reaction. Further, the ESEM results confirmed that the surface of the incorporated CaCO3 whiskers became rough, and the carbonized product (calcite) filled the cracks and pores, thus, making the cement paste cracks self-healing. |
| 资助项目 | Sichuan Province Regional Innovation Cooperation Project[2021YFQ0045] |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000750982200002 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34446]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Chunmei; Cheng, Xiaowei |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.CNOOC Res Inst Co Ltd, Beijing 100028, Peoples R China 3.Southwest Petr Univ, Sch New Energy & Mat, Chengdu 610500, Peoples R China 4.Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, Peng,Zhang, Chunmei,Wu, Zhiqiang,et al. Study on the effect of CaCO3 whiskers on carbonized self-healing cracks of cement paste: Application in CCUS cementing[J]. CONSTRUCTION AND BUILDING MATERIALS,2022,321:12. |
| APA | Gong, Peng.,Zhang, Chunmei.,Wu, Zhiqiang.,Zhang, Gaoying.,Mei, Kaiyuan.,...&Cheng, Xiaowei.(2022).Study on the effect of CaCO3 whiskers on carbonized self-healing cracks of cement paste: Application in CCUS cementing.CONSTRUCTION AND BUILDING MATERIALS,321,12. |
| MLA | Gong, Peng,et al."Study on the effect of CaCO3 whiskers on carbonized self-healing cracks of cement paste: Application in CCUS cementing".CONSTRUCTION AND BUILDING MATERIALS 321(2022):12. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。