Results 61 to 70 of about 273 (162)

Strength Attenuation Mechanism of High‐Pressure Frozen Sand Under Three‐Dimensional Stress States and an Extended SMP Criterion

Geofluids, Volume 2025, Issue 1, 2025.
This study investigates the critical issue of water‐bearing sand layer frozen walls in deep artificial ground freezing (AGF) projects subjected to complex three‐dimensional (3D) stress states. The influence of the intermediate principal stress coefficient b (0–1) on the directional shear behavior (enabled by the independent control of the major ...
Zejin Lai, Yuhua Fu, Zhigang Lu, Yaoping Zhang, Jun Chen, Daxing Lei, Xiaodong Zhao, Zetian Zhang   +7 more
wiley   +1 more source

Experimental study on strain accumulation characteristics of saturated remolded loess under pure rotation of the principal stress axis

Frontiers in Ecology and Evolution, 2023
The study conducted a pure rotation test of 720° for saturated remolded Q2 loess under principal stress axis (PSA) rotation when deviatoric stress and the intermediate principal stress ratio are different, also paying attention to examining the changes ...
Sui Wang, Sui Wang, Sui Wang, Zuliang Zhong, Zuliang Zhong, Bin Chen, Bo Wu, Dongyu Zhang, Fuxing Ni   +8 more
doaj   +1 more source

Water Sensitivity and Structural Properties of Loess

Advances in Civil Engineering, Volume 2024, Issue 1, 2024.
Loess has unique water sensitivity due to its distinct formation environment. The structure of loess is undercompactness, weak cementation, and porousness. The water sensitivity of loess directly leads to many environmental problems and geological hazards, including subgrade subsidences, slope collapse or failures, and building cracking.
Longfei Zhang, Zaiqiang Hu, Hongru Li, Haicheng She, Xiaoliang Wang, Xi Yang, Xiaoning Han, Domenico Magisano   +7 more
wiley   +1 more source

Mechanical properties of RoadyesTM-modified loess

Yantu gongcheng xuebao, 2023
The loess is structural and difficult to compact. How to solve the problem of loess compaction has always been a challenging technical problem in treatment of loess site foundation.
LI Hongru 1, 2, ZHAO Weilong 1, 2, NAN Zhongkai 1, 2
doaj   +1 more source

Surface Treatment of Rammed Earth Heritage Sites Using MICP Technology: An Investigation of Rainwater Erosion Resistance via Indoor Experiments and In Situ Testing

Geofluids, Volume 2024, Issue 1, 2024.
Rammed earth, a commonly used building material in ancient times, differs from natural sedimentary layers in that it is more compact. Buildings constructed from historical rammed earth sites frequently encounter the issue of rainwater erosion. Microbially induced calcium carbonate precipitation (MICP) is commonly applied to sand soil treatment, yet ...
Liang Liu, Yun Zhang, Wanting Chen, Haiying Cao, Lianjun Guo, Lingling Zheng, Tianli Li, Rong Shu, Dongdong Li, Zhixiong Zeng   +9 more
wiley   +1 more source

Investigation on the Shear Behavior and Mechanism of MICP‐Treated Loess Soil

Geofluids, Volume 2024, Issue 1, 2024.
Microbially induced carbonate precipitation (MICP) has been utilized as a new method to improve loess soil strength. In this study, we investigated the influence of the main parameters on the shear strength of MICP‐treated loess specimens. Initially, culture media with different formulas and pH values were examined to identify the most efficient medium
Yang Chen, Li Zhao, Jiaojiao Zi, Jianyong Han, Chaozhe Zhang, Mercè Corbella   +5 more
wiley   +1 more source

Microscopic Mechanism Affecting Shear Strength in Lignin-Treated Loess Samples

Advances in Materials Science and Engineering, 2019
In China, engineers have worked to create additional usable land for building construction by flattening the ridges of hills and filling in the adjacent valleys.
Wei Liu, Juan Wang, Gaochao Lin, Li Wen, Qian Wang   +4 more
doaj   +1 more source

Strength and structural anisotropy of loess

Yantu gongcheng xuebao, 2021
Undisturbed loess is the structural soil with anisotropy, and its anisotropy has great influences on the stability of slopes, tunnels and underground structures with complex stress state.To study the strength and structural anisotropy of loess, the ...
WANG Li-qin 1, 2, ZHAO Cong 3, 2, HU Xiang-yang 4, LI Lun 2, WANG Zheng 2, LI Kai-yu 2
doaj   +1 more source

Cyclic loading and unloading true triaxial tests on remolded loess

Yantu gongcheng xuebao
Aiming at the development characteristics of cumulative plastic strain of loess under different stress paths under cyclic loading and unloading conditions, the remolded loess is taken as the research object, and the round-trip loading and unloading tests
SHAO Shuai 1, ZHANG Jiaqing 1, SHAO Shengjun 1, 2, 3, SONG Jiayao 1, YAN Guangyi 4, ZHU Xueliang 1
doaj   +1 more source

Model tests on earth pressure at rest of light weight soil behind rigid retaining walls

Yantu gongcheng xuebao
To study the reduction mechanism of earth pressure on retaining wall for light weight soil, the model tests on a large-scale rigid retaining wall are conducted. The uniform loads are applied on the filling surface by heavy stacking.
HOU Tianshun , ZHANG Jiancheng , SHU Bo
doaj   +1 more source