Abstract
The influence of particle breakage on soil behaviour is important from theoretical and practical perspectives. Particle breakage changes the internal energy in two ways. First, internal energy is consumed for particle crushing and second, the internal energy changes because of additional volumetric strain caused by particle crushing. These two effects may be quantified by use of Frictional State Theory. The analysed drained triaxial compression tests of Toyoura sand, gravel and Dog's Bay sand at different stress level and stress path revealed that the effect of particle breakage is a function of soil gradation, strength of soil grains, stress level and stress path.
Highlights
A detailed understanding of how grain breakage and crushing of grain contacts affects the behaviour of granular soils is important in engineering applications such as the stability of natural slopes, driven piles [1], construction of rockfill structures [2,3], railway base [4,5] and others [6,7,8]
We can see that for sand behaviour at small and high stress levels at the end of tests, stress-plastic dilatancy is represented by FSL for =31.5
The linear stress-plastic dilatancy relationship at different shear stages is observed for particle breakage at a high stress level
Summary
A detailed understanding of how grain breakage and crushing of grain contacts affects the behaviour of granular soils is important in engineering applications such as the stability of natural slopes, driven piles [1], construction of rockfill structures [2,3], railway base [4,5] and others [6,7,8]. A general stress-plastic dilatancy relationship was developed based on Frictional State Theory [24]. The energetic equation assumed in Frictional State Theory explains the dual influence of breakage on energy consumption during shear as energy consumption due to the crushing of grain contacts and grain breakage and the change of internal energy due to the volume contraction. These two effects may be quantified by use of Frictional State Theory at the advanced shearing process. This will be shown by analysing previously-published experimental data of drained triaxial compression tests
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 call
