Evaluation of slake durability for carbonaceous rocks exposed to water soaking using electrical resistivity
文献类型：期刊论文
| 作者 | Yang, Yu-Ling1,3; Zhang, Tao3; Luo, Jun-Hui2 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2023-12-08 |
| 卷号 | 408页码:12 |
| 关键词 | Carbonaceous rock Electrical resistivity Slake durability Clay minerals Predictive model |
| ISSN号 | 0950-0618 |
| DOI | 10.1016/j.conbuildmat.2023.133785 |
| 英文摘要 | The present study investigated the electrical conduction and slake durability behaviors of carbonaceous rocks subjected to water soaking. Several series of electrical resistivity and slake durability tests were conducted on carbonaceous rocks with different mineralogical characteristics to explore the intrinsic connection between these two property indexes. Based on the experimental data, a new empirical model was developed to estimate slake durability index of carbonaceous rocks at varied soaking times. The results showed that the clay minerals content of investigated carbonaceous rocks ranged from approximately 20 % to 50 %. The clay minerals are beneficial in enhancing the electrical conduction of carbonaceous rocks, but impose a negative impact on the slake durability, attributing to their superior performance of hydrophilicity and swelling. Electrical resistivity decreased sharply with increasing soaking time within the first 8 days and then it achieved a stable state as soaking time further increased, which was mainly due to the completion of pore saturation and salts/minerals dissolution. The slake durability index exhibited similar evolution characteristics to those of electrical resistivity, which deteriorated sharply to a low or very low level after soaking for 16 days. The clay minerals experienced water absorption and mineral expansion during the first 8 days soaking, leading to the development of micro-cracks that facilitates water intrusion and accelerates the slake durability deterioration. These two processes were essentially complete as the soaking time further increased, and the clay minerals played an insignificant role at this stage. Liner increasing trends were observed in the plot of electrical resistivity decrease versus slake durability index decrease, and the slope values presented a power function relation with the clay minerals content of carbonaceous rocks. The proposed empirical model well captured the trends in the experimental data, with an absolute difference in percentage delta below30 % and a root mean square error RMSE value of 5.613 %. The outcomes of this study provided a viable answer to assess slake durability of carbonaceous rocks exposed to adverse external environments using non-destructive testing techniques. |
| 资助项目 | Open Research Fund of State Key Labo-ratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[Z019016] ; National Natural Science Foundation of China[41907248] ; National Natural Science Foundation of China[41807260] ; National Primary Research & Development Plan of China[2019YFC1806000] ; China Scholarship Council |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001096619400001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39848]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Tao |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Guangxi Beitou Transportat Maintenance Technol Grp, Nanning 530200, Peoples R China 3.Nanjing Tech Univ, Coll Transportat Engn, Nanjing 210009, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Yu-Ling,Zhang, Tao,Luo, Jun-Hui. Evaluation of slake durability for carbonaceous rocks exposed to water soaking using electrical resistivity[J]. CONSTRUCTION AND BUILDING MATERIALS,2023,408:12. |
| APA | Yang, Yu-Ling,Zhang, Tao,&Luo, Jun-Hui.(2023).Evaluation of slake durability for carbonaceous rocks exposed to water soaking using electrical resistivity.CONSTRUCTION AND BUILDING MATERIALS,408,12. |
| MLA | Yang, Yu-Ling,et al."Evaluation of slake durability for carbonaceous rocks exposed to water soaking using electrical resistivity".CONSTRUCTION AND BUILDING MATERIALS 408(2023):12. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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