In:
PLOS ONE, Public Library of Science (PLoS), Vol. 17, No. 7 ( 2022-7-14), p. e0271266-
Abstract:
Loess has the characteristics of large porosity, loose structure, uniform composition and strong collapsibility. When encountering heavy rainfall and irrigation prone to saturation, resulting in loess landslides, roadbed subsidence and dam instability. In order to study the effect of dry density and shear rate on the shear strength of saturated remolded loess, the consolidated undrained (CU) test was carried out in Yan’an City by using SLB-6A stress-strain controlled triaxial shear permeability test instrument. The shear rate, confining pressure and dry density were controlled during the test. The dry densities of the samples were 1.5 g / cm3, 1.6 g / cm3 and 1.7 g / cm3, respectively. CU tests of saturated remolded loess were carried out at different shear rates under the confining pressures of 100 kPa, 150 kPa and 200 kPa, respectively. It is found that the stress-strain curve of saturated remolded loess gradually moves upward with the increase of dry density. With the increase of dry density, the cohesion and internal friction angle of remolded saturated loess samples increase. At the same shear rate, with the increase of dry density, the deviatoric stress of the specimen increases significantly.
Type of Medium:
Online Resource
ISSN:
1932-6203
DOI:
10.1371/journal.pone.0271266
DOI:
10.1371/journal.pone.0271266.g001
DOI:
10.1371/journal.pone.0271266.g002
DOI:
10.1371/journal.pone.0271266.g003
DOI:
10.1371/journal.pone.0271266.g004
DOI:
10.1371/journal.pone.0271266.g005
DOI:
10.1371/journal.pone.0271266.g006
DOI:
10.1371/journal.pone.0271266.g007
DOI:
10.1371/journal.pone.0271266.g008
DOI:
10.1371/journal.pone.0271266.g009
DOI:
10.1371/journal.pone.0271266.g010
DOI:
10.1371/journal.pone.0271266.g011
DOI:
10.1371/journal.pone.0271266.g012
DOI:
10.1371/journal.pone.0271266.t001
DOI:
10.1371/journal.pone.0271266.t002
DOI:
10.1371/journal.pone.0271266.t003
DOI:
10.1371/journal.pone.0271266.t004
Language:
English
Publisher:
Public Library of Science (PLoS)
Publication Date:
2022
detail.hit.zdb_id:
2267670-3
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