Abstract
Interaction of aggregate particles within hot mixture asphalt (HMA) mixtures provides shearing resistance. Configuration of the aggregate particles was spatially depicted as sphere assembly. Four types of aggregates gradation, namely stone matrix asphalt stone skeleton, coarse graded stone-sand skeleton, coarse graded and fine graded sand-stone skeleton were studied. The structure models of aggregate gradation were examined using dilatancy properties. Dilatancy tendencies of the spheres assembly models statistically agreed with the dilatancy properties measured from compression test. Simple doublet mechanistic qualitatively depicted the deformation tendencies of sphere models under wheel-tracking test.
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