Evaluation of Deformation Behavior of Sand-Clay Mixture under Traffic Loads

Fedakar, Halil İbrahim; Cai, Wenjing; Rutherford, Cassandra J.; Çetin, Bora

doi:10.1061/9780784482803.022

Cited by 4 publications

(1 citation statement)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Failure also develops after numerous load repetitions, due to the accumulation of irrecoverable deformations; as a result of plastic deformation accumulation, the soil reaches the serviceability limit. Therefore, recently, deformation growth during cyclic loading has attracted more attention [ 1 , 4 , 13 , 14 ]. Accumulation of deformation phenomena have been divided into a few categories.…”

Section: Introductionmentioning

confidence: 99%

Long-Term Cyclic Loading Impact on the Creep Deformation Mechanism in Cohesive Materials

Głuchowski

Sas

2020

Materials

View full text Add to dashboard Cite

Long-term cyclic loading is observed in a wide range of human activities, as well as in nature, such as in the case of ocean waves. Cyclic loading can lead to ratcheting which is defined as progressive accumulation of plastic deformation in a material. Long-term cyclic loading causes a time effect (creep), which is a secondary compression effect. In this article, we conducted 15 triaxial tests on four types of cohesive materials in undrained conditions to evaluate the damage and failure mechanism. To characterize the strain and pore pressure development, we modified the Yanbu resistance concept. On the basis of the static creep tests, we concluded that the stress paths for undrained creep behavior have to take into account the pore pressure developed during long-term cyclic loading. Pore pressure build-up and plastic strain accumulation during long-term cyclic loading are dependent on the number of loading cycles. Finally, we proposed the failure criterion, which was based on the Modified Cam-Clay constitutive model.

show abstract

Section: Introductionmentioning

confidence: 99%

Long-Term Cyclic Loading Impact on the Creep Deformation Mechanism in Cohesive Materials

Głuchowski

Sas

2020

Materials

View full text Add to dashboard Cite

show abstract

Effect of principal stress rotation on deformation behavior of dense sand–clay mixtures

Fedakar

Rutherford

Çetin

2021

Road Materials and Pavement Design

View full text Add to dashboard Cite

A Cyclic True Triaxial with Rigid-Rigid-Flexible Boundary for Determination of Cross-Anisotropic Nature of Geomaterials

Aydin

Hatipoğlu

Çetin

et al. 2023

Geotechnical Testing Journal

View full text Add to dashboard Cite

This paper describes a custom-designed Soil Poly-Axial Test System, SPAX-3000, developed to investigate the cross-anisotropic material properties of geomaterials under varying loading conditions. SPAX-3000, a mixed-boundary type of large-scale cyclic true triaxial apparatus (CTTA), is capable of applying a wide range of principal stress combinations on prismatic specimens of dimensions 152 × 152 × 304 mm. Two vertical and two horizontal load actuators on two opposite faces apply principal major (σ1) and intermediate (σ2) stresses independently to evaluate the performance of pavement structures under anisotropic stress states through resilient modulus (MR) testing. SPAX-3000 is controlled through software (CATS Software, provided by the manufacturer to provide advanced digital servo control of stresses and deformations). In this study, SPAX-3000 capabilities were evaluated through MR testing of both isotropic (urethane rubber) and cross-anisotropic materials (base, subbase, and subgrade) for the development of stress histories. The test results showed that SPAX-3000 is capable of determining MR independently of the anisotropy characteristics of the tested materials. Stress-hardening and stress-softening behaviors were observed for the coarse- and fine-grained geomaterials under different loading conditions. Anisotropy ratios (ratio of horizontal MR [MhR] to the vertical MR [MvR]) were determined for the base, subbase, and subgrade materials. MR test results showed that higher MvR results were obtained than that of MhR regardless of the loading conditions. The anisotropy ratios ranged from 0.08 to 0.21, 0.38 to 0.87, and 0.05 to 0.50 for the base, subbase, and subgrade materials, respectively. The highest MvR values (200–590 MPa) were obtained for the base material, whereas subbase material yielded the highest MhR (35–169 MPa). In general, stress-hardening behavior was observed for the geomaterials tested in both directions except for the stiffness of subgrade and subbase materials in the vertical direction.

show abstract

Evaluation of Deformation Behavior of Sand-Clay Mixture under Traffic Loads

Cited by 4 publications

References 23 publications

Long-Term Cyclic Loading Impact on the Creep Deformation Mechanism in Cohesive Materials

Long-Term Cyclic Loading Impact on the Creep Deformation Mechanism in Cohesive Materials

Effect of principal stress rotation on deformation behavior of dense sand–clay mixtures

A Cyclic True Triaxial with Rigid-Rigid-Flexible Boundary for Determination of Cross-Anisotropic Nature of Geomaterials

Contact Info

Product

Resources

About