Abstract: Geotechnical uncertainty is the governing source of risk on urban tunnel projects. A typical preconstruction geotechnical site investigation for a tunnel project involves vertical and/or inclined boreholes spaced at 50-m ...

Abstract: An investigation was conducted to characterize and relate in situ soil stress-strain behavior to roller-measured soil stiffness. Continuous assessment of soil stiffness via roller vibration monitoring has the potential to ...

Abstract: The lightweight deflectometer (LWD) is gaining acceptance and popularity as an in situ spot-testing device for quality control/quality assurance of earthwork compaction. Little research has been conducted to investigate ...

Abstract: The objective of the study presented in this paper was to determine the optimal sensor location to assess human discomfort during vehicle groove wander, a phenomenon whereby vehicle occupants ...

Abstract: A field investigation was carried out with an instrumented vibratory roller compactor to explore the relationship between vibration characteristics and underlying soil properties, namely soil stiffness. The roller was ...

Abstract: Stratigraphic transitions within the tunnel envelope cause a rapid change in tunnel boring machine (TBM) operating parameters and impose a significant challenge to TBM tunnel projects. This paper presents a geostatistical ...

Abstract: The development of localized strains (shear banding) in soils near peak stress levels and the subsequent continued deformation within shear bands during observed softening render important issues such as critical state ...

Abstract: The geostatistical analysis of roller-measured soil properties (from continuous compaction control and intelligent compaction) is required for advanced quality control/quality assurance of earthwork and asphalt compaction. ...

Abstract: Shear banding, the localization of deformation into thin zones of intense shearing, is a phenomenon commonly observed in soils, yet it is still poorly understood. Stereophotogrammetry was used to study the deformation in ...

Abstract: Experimental data have shown that vibratory roller compactors often exhibit rotational kinematics in addition to translation during operation. This rotation is not considered in roller-integrated measurement systems that ...