To explore the factors affecting the shear strength of compacted loess, direct shear tests and compression tests under different moisture contents and compaction were conducted. The results show that the angle of internal friction and the cohesion of the soil depend on the moisture content and compaction. The influence of the moisture content is more significant than that of the compaction. The relationship between the confined compression strain and vertical pressure can be fitted by a hyperbolic curve. The secant modulus has a positive linear relationship with the compaction, and a parabolic correlation with the moisture content. A modified formula for the deformation of loess under changing compaction and moisture content is presented.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Y. S. Liu, Y. J. Guo, and Y. R. Li, "GIS-based effect assessment of soil erosion before and after gully land consolidation: A case study of Wangjiagou Project region, Loess Plateau," Chin. Geogr. Sci., 25(2), 137-146 (2015).
Y. Liu and Y. Li, "Environment: China's land creation project stands firm," Nature, 511(7510), 410 (2014).
P. Y. Li, H. Qian, and J. H. Wu, "Environment: Accelerated research on land creation," Nature, 510(7503), 29-31 (2014).
J. K. Mitchell and K. Soga, Fundamentals of Soil Behavior, third edition, Wiley, New York (2005).
B. M. Das and A. Sawicki, Principles of Geotechnical Engineering, Seventh edition, Cengage Learning, Boston (2016).
C. M. Hu, Y. Mei, and X. Y. Wang, "Deformation and shearing strength characteristic of compacted Malan loess in Lvliang region," Eng. Mech., 30(10), 108-114, (2013).
L. H. Wang, X. H. Bai, and J. Q. Feng, "Discussion on shearing strength influencing factors of compacted loess-like backfill," Chin. J. Geotech. Eng., 32(s2), 132-136 (2010).
X. J. Liu, Z. Wang, and T. H. Wang, "Experimental study on shear strength of loess joints," J. Chin. Coal Soc., 42(8), 2004-2011 (2017).
H. Nikovic and D. Gordana, "The influence of the grain-size distribution and soil structure on the unsaturated shear strength of loess sediments in Belgrade, Central Serbia," Geoloski Anali Balkanskog Poluostrva, 2009 (70), 83-91 (2009).
B. X. Li, Y. H. Niu, and T. D. Miao, "Physico-mechanical characteristics of Malan loess in Lanzhou region," Rock Soil Mech., 28(6), 1077-1082 (2007).
L. Jia, Y. P. Zhu, and J. C. Zhu, "Influencing factors for shear strength of Malan and Lishi compacted loess in Lanzhou," Chin. J. Geotech. Eng., 36(zk2), 120-124 (2014).
T. D. Miao, Z. Y. Liu, and J. S. Ren, "Deformation mechanism and constitutive relation of collapsible loess," Chin. J. Geotech. Eng., 21(4), 383-387 (1999).
Z. H. Chen, Z. H. Xu, and Z. D. Liu, "Some problems on the collapse of collapsible loess," Chin. Civil Eng. J., 19(3), 86-94 (1986).
Z. D. Liu, Z. Y. Guo, and Z. H. Chen, "The deformation characteristics of loess," Chin. Civil Eng. J., 18(1), 69-76 (1985).
W. Zhang and S. M. Zhang, "The deformation characteristics of unsaturated loess foundation," Chin. J. Geotech. Eng., 20(4), 98-101 (1998).
S. J. Shao, J. Li, and J. Shao, "In-situ sand well immersion tests on self-weight collapsible loess site with large depth," Chin. J. Geotech. Eng., 38 (9), 1549-1558 (2016).
Y. Kong, H. N. Ruan, and X. F. Huang, "Deformation characteristics of compacted Malan loess in Yan'an region under high consolidation pressure," Rock Soil Mech., 38(9), 1549-1558 (2016).
A. J. Zhang, Y. C. Xing, and H. T. Wang, "Evaluation method for collapsibility of channel engineering with loess foundation based on moistening deformation," J. Hydraul. Eng., 48(1), 41-51.60 (2017).
K. F. Yuan, "The study of collapsible for intact loess and remolded loess," Intl. Conf. on Mechatronics, Electronic, Industrial and Control Engineering, 15(47), 3975-3987 (2015).
M. Menona, X. D. Jia, G. J. Lair, P. H. Faraja, and A. Blaud, "Analysing the impact of compaction of soil aggregates using X-ray microtomography and water flow simulations," Soil Tillage Res., 150(3), 147-157 (2015).
K. Wu, W. K. Ni, K. Liu, B. Y. Shi, and Y. X. Guo, "Analysis on compression deformation of remolded loess based on secant-modulus method," Int. J. Earth Sci., 9(6), 2568-2576 (2016).
Ministry of Water Resources of the PRC, Standard for Soil Test Method [in Chinese], GB/T 50123-1999, China Planning Press, Beijing (1999).
G. X. Li, Advanced Soil Mechanic [in Chinese], Second edition, Tsinghua University Press, Beijing (2016).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Osnovaniya, Fundamenty i Mekhanika Gruntov, No. 1, p. 19, January-February, 2020.
Rights and permissions
About this article
Cite this article
Jia-Wei, L., Heng-Hui, F., Xin-Ye, S. et al. Characteristics of Shear Strength and Deformation of Compacted Q3 Loess. Soil Mech Found Eng 57, 65–72 (2020). https://doi.org/10.1007/s11204-020-09638-3
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11204-020-09638-3