Abstract: Unbound aggregate base and subbase in layered pavement structures provide an essential function of wheel load distribution through proper angular or crushed particle interlocking of coarse aggregate particles in the granular ...

Abstract: Standard repeated load triaxial tests commonly performed in the laboratory do not always apply the most damaging field loading conditions for predicting resilient and permanent deformation (rutting) responses of unbound ...

Abstract: This paper presents findings from a recently completed research study at the University of Illinois aimed at investigating the effects of aggregate type and quality on mechanistic pavement response and rutting performance ...

Abstract: This paper presents findings of a research study focused on investigating influences of coarse aggregate morphologies on the strength and permanent deformation behavior of unbound aggregate materials. Angularity and surface ...

Abstract: The discrete-element method (DEM) provides more realistic results compared with those of continuum analysis for unbound construction materials such as railroad ballast. This paper introduces a digital-image aided particle-shape ...

Abstract: Oil sand is a generic name given to natural deposits of bituminous sand materials that are mined for crude oil production. These materials are currently used as subgrade materials of temporary and permanent roads in oil ...

Abstract: A method of analysis using fully deformable blocks is proposed for modeling unbound granular layers used in flexible pavements. An assemblage of discrete blocks of aggregates is employed to approximate the load transfer ...

Abstract: A new methodology is presented in this paper for determining cross-anisotropic aggregate base properties, i.e., directional dependency of moduli and Poisson’s ratios, as inputs into mechanistic pavement analysis considering ...

Abstract: Geogrids are commonly used in road construction for stabilization and reinforcement purposes. Factors affecting the interaction or interlock mechanisms between geogrids and aggregates may include, but are not limited to, ...