Development and application of an instrument for simulating wetting-drying cycles of expansive soils under loads
文献类型：期刊论文
| 作者 | Dong, Jun-gui; Lv, Hai-bo; Wu, Wei |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2018 |
| 卷号 | 15期号:11页码:2552-2560 |
| 关键词 | Expansive soils Wetting-drying cycle Instrument Load Shear strength |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-018-4934-1 |
| 文献子类 | Article |
| 英文摘要 | Alternating rainfall and evaporation in nature severely impact the shear strength of expansive soils. This study presents an instrument for simulating the effect of wetting-drying cycles on the strength of expansive soils under different loads, and its testing error is verified. With this instrument, direct shear tests were performed on samples experiencing 0-6 cycles under vertical loads of 0 kPa, 5 kPa, 15 kPa, and 30 kPa. The results found that this instrument provides a new method for evaluating the effects of wetting-drying cycles on soils, and this method represents actual engineering conditions more accurately than do preexisting methods. It accurately controls the water content within 1% while simulating the specified loads at different soil depths. Cohesion is significantly affected by wetting-drying cycles, while the friction angle is not as sensitive to these cycles. Decrease in shear strength can be attributed to the fissures in soils caused by wetting-drying cycles. The existence of vertical loads effectively restricts shrinkage fissuring and cohesion attenuation, consequently inhibiting the attenuation of shear strength. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| WOS记录号 | WOS:000450458300017 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/46354]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2018_Vol15 No.11 |
| 推荐引用方式 GB/T 7714 | Dong, Jun-gui,Lv, Hai-bo,Wu, Wei. Development and application of an instrument for simulating wetting-drying cycles of expansive soils under loads[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(11):2552-2560. |
| APA | Dong, Jun-gui,Lv, Hai-bo,&Wu, Wei.(2018).Development and application of an instrument for simulating wetting-drying cycles of expansive soils under loads.JOURNAL OF MOUNTAIN SCIENCE,15(11),2552-2560. |
| MLA | Dong, Jun-gui,et al."Development and application of an instrument for simulating wetting-drying cycles of expansive soils under loads".JOURNAL OF MOUNTAIN SCIENCE 15.11(2018):2552-2560. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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