Professor Jayantha Kodikara is the Deputy Head in the Department of Civil Engineering, Monash University and the Director of ARC Hub for Smart Next Generation Transport Pavements – SPARC (www.sparchub.org.au). He is also the leader of Monash Pipeline Research Group (www.crticalpipes.com). His current primary research areas are unsaturated soils, geo-infrastructure including pipelines and road pavements, and structural health monitoring using advanced sensing such as distributed fiber optics and

ABSTRACT:The soil compaction is one of the most common activities of civil construction. It is applicable to construction of fills, dams, roads and embankments. The compacted soils can be subjected to various external and environmental loading after construction. The external loading can arise from superstructure loading, moving traffic and overburden soils. The environmental loading can come from the interaction of surficial soils with the atmosphere in forms such as wetting and drying. Under the combination of these loadings, the compacted soils display complex patterns of behaviour such as swelling, collapse, tensile cracking and swelling pressure development against buried non-yielding bodies. The seminar will present a new framework for predicting the behaviour of compacted soils under these loadings, referred to as the MPK Framework (Kodikara, 2012) and a generalised constitutive model developed following this framework referred to as MPK Model (Kodikara et al., 2019). The model will cover both volumetric and shear behaviour and can reproduce most phenomenological observations on compacted clay behaviour.