Liquefaction characteristics of sand-gravel mixtures: Experimental observations and its assessment based on intergranular state concept

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dc.contributor.authorPokhrel , Abilash
dc.contributor.authorChiaro, Gabriele
dc.contributor.authorKiyota , Takashi
dc.contributor.authorCubrinovski, Misko
dc.date.accessioned2024-11-21T22:09:17Z
dc.date.available2024-11-21T22:09:17Z
dc.date.issued2024
dc.description.abstractCase histories from at least 28 earthquakes worldwide have indicated that liquefaction can occur in gravelly soils (both in natural deposits and manmade reclamations), inducing large ground deformation and causing severe damage to civil infrastructures. However, the evaluation of the liquefaction potential and cyclic strain accumulation characteristics of gravelly soils remains a major challenge in geotechnical earthquake engineering. To provide new and useful insights into this crucial topic, stress-controlled undrained cyclic triaxial tests were conducted on sand-gravel mixtures (SGM) having sand-dominated microstructure but different packing states (i.e., soil grain arrangement), which were obtained by varying the gravel content (GC) and relative density (Dr). The experimental results confirmed that both the GC and Dr have marginal (at low GC and Dr) to significant (at high GC and Dr) effects on the cyclic resistance ratio (CRR) of SGM, but highlighted the need to consider GC and Dr effects together. In this regard, the use of state parameters, such as the equivalent void ratio (ef(eq)) and equivalent relative density (Drf(eq)), were found to be suitable approaches to describe the combined effect of GC and Dr on CRR as they provide unique correlations for sand-dominated SGM irrespective of their packing states.
dc.identifier.citationPokhrel A, Chiaro G, Kiyota T, Cubrinovski M (2024). Liquefaction characteristics of sand-gravel mixtures: Experimental observations and its assessment based on intergranular state concept. Soils and Foundations. 64(2). 101444-101444.
dc.identifier.doihttp://doi.org/10.1016/j.sandf.2024.101444
dc.identifier.issn0038-0806
dc.identifier.urihttps://hdl.handle.net/10092/107481
dc.languageen
dc.publisherElsevier BV
dc.rightsAll rights reserved unless otherwise stated
dc.rights.urihttp://hdl.handle.net/10092/17651
dc.subjectequivalent void ratio
dc.subjectgravel content
dc.subjectliquefaction potential
dc.subjectequivalent relative density
dc.subjectsand-gravel mixtures
dc.subject.anzsrc41 - Environmental sciences::4106 - Soil sciences
dc.titleLiquefaction characteristics of sand-gravel mixtures: Experimental observations and its assessment based on intergranular state concept
dc.typeJournal Article
uc.collegeFaculty of Engineering
uc.departmentCivil and Natural Resources Engineering
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