A Feasible Method for Evaluating the Uniformity of Remolded Loess Samples with Shear Strength
文献类型：期刊论文
| 作者 | Yao, Wang2; Li, Xi'an2; Zhang, Ning2; Ren, Yongbiao2; Shi, Jianfeng1; Zhang, Chen2; Xue, Quan3; Hao, Zhitao2 |
| 刊名 | BUILDINGS
 |
| 出版日期 | 2023 |
| 卷号 | 13期号:1页码:- |
| 关键词 | uniformity remolded loess shear test SEM test shear strength uniformity coefficient |
| 英文摘要 | The precision and reliability of test findings are closely related to the uniformity of remolded loess samples. Although many methods to evaluate the uniformity of remolded loess have been proposed, they have not been widely accepted, due to the many defects. Therefore, it is necessary to explore the evaluation method and index of the uniformity of remolded loess samples in laboratory tests. In this paper, variations in shear strength and microscopic properties along the sample height were examined using the direct shear test and scanning electron microscopy (SEM) test. The feasibility and reliability of employing shear strength as an indicator to assess the uniformity of remolded loess samples were confirmed based on the test results. The results showed that the shear strength and shear strength parameters decreased from top to bottom along the sample height, and that the difference in the shear strength and shear strength parameters between the top and the bottom of remolded loess samples increased with the increase in the sample height. The variation tendency of the shear strength and shear strength parameters altered when the height-diameter (H/D) ratio exceeded 0.97. The SEM test results revealed that as the sample height increased, the disparity in microstructure and pore distribution in various portions of remolded loess samples became more apparent. The effect of sample height on the uniformity of remolded loess samples was mostly attributable to the variation in coating thickness and the content of clay particles on the surface of coarse particles, induced by a reduction in compactness from the top to the bottom of samples. The coefficient for evaluating the uniformity of the remolded loess sample was defined as the ratio of the shear strength at the top to that at the bottom of the remolded sample, and 0.8 was chosen as the threshold value. The shear strength reflected the uniformity of remolded loess samples as accurately as the microscopic test parameters. Furthermore, the direct shear test is the most classic and widely used laboratory test, with a low cost, easy accessibility, short test cycle, simple data processing and low environmental requirements, which provides another feasible method to evaluate the uniformity of remolded loess. |
| 学科主题 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000914722700001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35034]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.China Jikan Research Institute of Engineering Investigation and Design Co., Ltd., Xi’an 710043, China 2.College of Geological Engineering and Geomatics, Chang’an University, Xi’an 710054, China 3.Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China |
| 推荐引用方式 GB/T 7714 | Yao, Wang,Li, Xi'an,Zhang, Ning,et al. A Feasible Method for Evaluating the Uniformity of Remolded Loess Samples with Shear Strength[J]. BUILDINGS,2023,13(1):-. |
| APA | Yao, Wang.,Li, Xi'an.,Zhang, Ning.,Ren, Yongbiao.,Shi, Jianfeng.,...&Hao, Zhitao.(2023).A Feasible Method for Evaluating the Uniformity of Remolded Loess Samples with Shear Strength.BUILDINGS,13(1),-. |
| MLA | Yao, Wang,et al."A Feasible Method for Evaluating the Uniformity of Remolded Loess Samples with Shear Strength".BUILDINGS 13.1(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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