Adaptation of an existing constitutive model for describing mechanical behaviour of cemented granular soils. Issue 3 (3rd July 2018)

• Record Type: Journal Article
• Authors: Bathayian, M. H.; Maleki, M.
• Is Part Of: Geomechanics and geoengineering. Volume 13:Issue 3(2018)
• Page Start: 184
• Page End: 197
• Publication Date: 2018-07-03
• Subjects: Cemented granular soils -- constitutive model -- failure state -- residual strength; Engineering geology -- Periodicals; Soil mechanics -- Periodicals; Rock mechanics -- Periodicals; Environmental engineering -- Periodicals; 624.151
• DOI: 10.1080/17486025.2018.1434243
• Languages: English
• ISSNs: 1748-6025

Abstract

ABSTRACT: In this paper, an existing elastoplastic constitutive model, originally developed for granular soils, is adapted to describe the stress–strain behaviour of cemented granular soils. The existing model (CJS), due to its modular formulation, can be easily developed to take into account different supplementary behavioural aspects in soil mechanics. In the present study, the failure mechanism of the CJS model is modified by introducing the essential aspects in the behaviour of cemented granular soils in its formulation. All of the model parameters have clear physical meaning and can be identified using classical laboratory tests. A set of direct relations between model parameters and famous mechanical parameters of soils such as internal friction angle and cohesion at peak and residual states is presented. In order to validate the model, the results of triaxial and uniaxial tests in the compression and extension performed on cemented granular materials are used. The validation results indicate the good capability of the proposed model.