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Method to Introduce the Cementation Effect into Existing Elastoplastic Constitutive Models for Soils.
- Source :
-
Journal of Geotechnical & Geoenvironmental Engineering . May2022, Vol. 148 Issue 5, p1-14. 14p. - Publication Year :
- 2022
-
Abstract
- This study proposes a new method to introduce the cementation effect into existing elastoplastic constitutive models for soils. The mechanical properties of cement-treated soil are evaluated via element tests and compared with those of naturally deposited clay. The similarities and differences between cement-treated soils and naturally deposited clays are studied, focusing on two states, the undisturbed and remolded states. The effective stress for cement-treated soils incorporating an internal state variable representing the cementation effect is newly defined to describe the mechanical properties of cement-treated soils. Moreover, by applying this extended effective stress to the super-subloading yield surface (SYS) Cam-clay model, which is an elastoplastic model for soils based on the skeleton structure concept, the scope of this constitutive model is extended to include cement-treated soils. The cementation effect introduced by the proposed method allows reproducing the mechanical behavior of the cement-treated soil. Finally, a brittle behavior not described at the element level can be obtained, leading to a soil–water coupled finite deformation analysis incorporating the proposed constitutive model. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SOILS
*YIELD surfaces
*CLAY
*YIELD stress
Subjects
Details
- Language :
- English
- ISSN :
- 10900241
- Volume :
- 148
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Journal of Geotechnical & Geoenvironmental Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 155860640
- Full Text :
- https://doi.org/10.1061/(ASCE)GT.1943-5606.0002727