Saskatchewan Field Case Study of Triaxial Frequency Sweep Characterization to Predict Failure of a Granular Base across Increasing Fines Content and Traffic Speed Applications

Berthelot, C; Podborochynski, Diana; Marjerison, B; Gerbrandt, R

doi:10.1061/(asce)te.1943-5436.0000054

Cited by 13 publications

(1 citation statement)

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“…However, the base and subbase layers are designed as ideal materials without any deterioration according to the most recent flexible pavement structural design guide in Australia [28]. UGMs are sensitive to permanent deformation (PD) and cause deterioration such as rutting under long-term transport loads [29]. Meanwhile, Austroads [28] reported that no appropriate understanding is available to describe the PD and resilient modulus of UGMs in flexible pavements in Australia.…”

Section: Traffic Loading Response and Repeated Load Triaxial Testmentioning

confidence: 99%

Influence of Degree of Saturation (DOS) on Dynamic Behavior of Unbound Granular Materials

Sun

Ong

2021

Geosciences

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The extensive application of natural unbound granular materials (UGMs) motivates studies into the mechanical properties of alternatives such as processed crushed rocks employed commonly as base or subbase layers. The rutting and settlement generated in base and subbase layers is widely restricted in many specifications and standards. In this research, the dynamic behavior including the resilient modulus () and the plastic strain () of the crushed rocks collected from Queensland in Australia will be tested by a series of repeated load triaxial test (RLT) tests to investigate the behavior of UGMs under the fluctuation of the degree of saturation (DOS) (59%–100%). In particular, the RLT specimens were prepared in the laboratory through proper gradation under optimum moisture content (OMC) and 100% standard proctor maximum dry unit weight. Results from the RLT tests showed that UGM specimens soaked at higher DOS generated lower resilient modulus and weaker resistance to heavy traffic volumes with significant accumulation of plastic strain. The and of the tested aggregates under different cyclic deviator stresses of 425 kPa and 625 kPa approximately linearly decreased and approximately linearly increased as the DOS increased with a certain number of cycles up to 50,000, respectively.

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Section: Traffic Loading Response and Repeated Load Triaxial Testmentioning

confidence: 99%