Abstract
Compacted soils constitute most engineering projects such as earth dams, embankments, pavements, and engineered slopes because of their high shear strength and low compressibility. The shear strength of compacted soils is a key soil parameter in the design of earth structures but it is seldom determined correctly due to their unsaturated state. The shear strength of compacted soils can be better evaluated under the framework of unsaturated soil mechanics. Saturated and unsaturated tests were conducted on compacted specimens using conventional direct shear apparatus under constant water content condition. Tests were conducted at different water contents and net normal stresses. The main objective of this study is to develop a shear strength model for compacted soils. Initial matric suction was measured before the test using the filter paper method. The two-stress state variables together with the extended Mohr-Coulomb failure criterion for unsaturated soils were used to obtain a lower bound model of the shear strength. The model was demonstrated using published data.
Original language | English |
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Title of host publication | 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019 |
Editors | Erdin Ibraim, Alessandro Tarantino |
Publisher | EDP Sciences |
ISBN (Electronic) | 9782759890644 |
DOIs | |
Publication status | Published - Jun 25 2019 |
Externally published | Yes |
Event | 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019 - Glasgow, United Kingdom Duration: Jun 26 2019 → Jun 28 2019 |
Publication series
Name | E3S Web of Conferences |
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Volume | 92 |
ISSN (Print) | 2555-0403 |
ISSN (Electronic) | 2267-1242 |
Conference
Conference | 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019 |
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Country/Territory | United Kingdom |
City | Glasgow |
Period | 6/26/19 → 6/28/19 |
Bibliographical note
Publisher Copyright:© The Authors, published by EDP Sciences.
ASJC Scopus Subject Areas
- General Environmental Science
- General Energy
- General Earth and Planetary Sciences