Effect of cementation on the small-strain stiffness of granite residual soil
文献类型：期刊论文
| 作者 | Liu, Xinyu2,3; Zhang, Xianwei2; Kong, Lingwei2; Li, Xinming1; Wang, Gang2,3 |
| 刊名 | SOILS AND FOUNDATIONS
 |
| 出版日期 | 2021-04-01 |
| 卷号 | 61期号:2页码:520-532 |
| 关键词 | Granite residual soil Small-strain stiffness Resonant column Cementation Weathering In situ tests |
| ISSN号 | 0038-0806 |
| DOI | 10.1016/j.sandf.2021.02.001 |
| 英文摘要 | It is widely acknowledged that residual and sedimentary soils differ considerably because of how they formed. However, despite extensive advances regarding sedimentary soil, little is known about the small-strain stiffness of residual soil. This paper concerns granite residual soil from Xiamen in China, for which a typical profile is established by in situ investigations. How the stiffness varies with the soil current state, including effective mean stress, void ratio and strain, is established via systematic resonant-column tests on high-quality undisturbed and remolded specimens. Highlighted are the unique properties of the studied soil and how they affect the soil stiffness. It is found that cementation among soil particles plays a critical role in the soil stiffness. Although some existing methods can confirm the existence of cementation in the studied soil, they cannot quantify it. Therefore, a new parameter R-n is proposed to quantify the degree of cementation, with lower R-n corresponding to a more cemented structure. According to the proposed R-n, the studied residual soil in Xiamen has a different degree of cementation from that of some well-studied weathered materials, thereby necessitating separate characterization of this soil. This study improves the understanding of residual soil stiffness at small strain, especially the key effect of cementation in natural soil. (C) 2021 Production and hosting by Elsevier B.V. on behalf of The Japanese Geotechnical Society. |
| 资助项目 | National Natural Science Foundation of China[41972285] ; National Natural Science Foundation of China[41672293] ; National Natural Science Foundation of China[51709290] ; Youth Innovation Promotion Association CAS[2018363] ; opening fund of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection[SKLGP2020K024] ; Science Fund for Distinguished Young Scholars of Hubei Province[2020CFA103] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000634817700019 |
| 出版者 | JAPANESE GEOTECHNICAL SOC |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25992]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Xianwei |
| 作者单位 | 1.Zhongyuan Univ Technol, Zhengzhou, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xinyu,Zhang, Xianwei,Kong, Lingwei,et al. Effect of cementation on the small-strain stiffness of granite residual soil[J]. SOILS AND FOUNDATIONS,2021,61(2):520-532. |
| APA | Liu, Xinyu,Zhang, Xianwei,Kong, Lingwei,Li, Xinming,&Wang, Gang.(2021).Effect of cementation on the small-strain stiffness of granite residual soil.SOILS AND FOUNDATIONS,61(2),520-532. |
| MLA | Liu, Xinyu,et al."Effect of cementation on the small-strain stiffness of granite residual soil".SOILS AND FOUNDATIONS 61.2(2021):520-532. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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