Abstract
Analyzing the results of triaxial compression tests under drained conditions for Erksak sand published in the literature, the stress–dilatancy relationships were described using the frictional state concept. At all phases of shearing, the linear stress ratio–plastic dilatancy relationship can be expressed by the critical frictional state angle and two parameters of the frictional state concept. At failure, dense sand exhibits purely frictional behavior (α = 0, β = 1) and the stress ratio–dilatancy relationship may be correctly described by the Rowe, Bolton, and frictional state concept relationships. Very loose Erksak sand sheared under drained triaxial compression at the ultimate state reaches a stable condition, but the reached stress ratio is significantly smaller than the one at a critical state.
Highlights
The phenomenon of sand behavior is that shear can induce volume changes
The influence of grain crushing on the stress ratio–plastic dilatancy relationship for soils with weak grains is shown in previous studies [13,14] and for railway ballast in a previous report [15]
In this paper, drained triaxial compression test results for loose and very loose Erksak sand conducted by Been and Jefferies [24] were analyzed with the use of frictional state concept
Summary
The phenomenon of sand (soil) behavior is that shear can induce volume changes. In a direct shear test, the energy considerations of Taylor [1] showed that shear strength is a sum of frictional and dilatancy components. Linear and nonlinear stress ratio–plastic dilatancy relationships (η − Dp ) were obtained from C-C and M-C-C models, respectively. The stress ratio–plastic dilatancy (η − Dp ) relationships are linear for various shear phases of soil defined by the stress ratio at the critical frictional state and two new parameters α and β. The linear stress ratio–plastic dilatancy relationships for various shear phases of Toyoura sand under undrained triaxial compression conditions were obtained [16]. In this paper, drained triaxial compression test results for loose and very loose Erksak sand conducted by Been and Jefferies [24] were analyzed with the use of frictional state concept. The obtained stress ratio is significantly smaller than the critical state ratio This means that critical state for very loose sand is not reached. The frictional state concept can describe the real behavior of the various initial densities of Erksak sand at various phases of shear
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
