Static and Cyclic Triaxial Testing of Ballast and Subballast

Effect of confining pressure on ballast degradation and deformation under cyclic triaxial loading

“…3), cyclically loaded specimens display a significantly higher tendency for rapid initial compression, although this effect may diminish with increasing initial density. Suiker et al (2005) showed that granular materials display a strong tendency to compact under cyclic loading, even as ł approaches 1, and a similar behaviour is observed in the current study.…”

“…Various researchers (e.g. Ishihara, 1985;Suiker et al, 2005) have shown that, under cyclic/dynamic conditions, specimens are able to sustain significantly greater deviator stress magnitudes than statically loaded specimens: hence ł values greater than 1 can be applied. Fig.…”

Validation and Calibration of a High-Cycle Accumulation Model Based on Cyclic Triaxial Tests on Eight Sands

“…For large stress amplitudes with q min §0 and q max approaching the failure line, as sometimes tested in pavement engineering (Suiker et al, 2005), the ‰ow rule ·e …”

Micromechanics-Based Investigation of Fouled Ballast Using Large-Scale Triaxial Tests and Discrete Element Modeling

“…Sources of fouling can be attributed to the breakage of angular corners and sharp edges, infiltration of fine particles, or clay pumping from underlying layers subjected to high cyclic load and saturated subgrade conditions (Selig and Waters 1994;Suiker et al 2005;Anderson and Fair 2008;Indraratna et al 2011a). Given that trains usually operate in low-lying coastal regions in Australia where the subgrades are commonly saturated, the fines (mud, clays and silt-size particles) of the subgrade tend to be pumped up into the ballast layer as slurry under cyclic train loading (Trani and Indraratna 2010;Indraratna et al 2013b).…”