INVESTIGATION OF ENGINEERING PROPERTIES OF STONE MASTIC ASPHALT COATINGS UNDER DIFFERENT LOADS

Abstract

ABSTRACTPermanent way selection is achieved according to the repeated load and environmental factors in theroad superstructure, and stone mastic asphalt (SMA) coatings are one of the selected coating types onroads with heavy vehicle traffic. Determining the behavior of roads under load is a complexconstruction. Generally, tests are applied on the performance of the road with laboratory and fieldexperiments. Since the test method usually requires many experiments and costs, it is important tosupport the behavior of road pavements under different conditions with numerical analyzes as well.In particular, the stress-strain relations in the layer transitions of the road pavement are betterunderstood by numerical analysis. In this study, the engineering properties of SMA coatings indifferent axle load applications were investigated, and the stress-strain relations in different layerswere evaluated. As a result, less stress-deformations were observed in the transitions to the lowerlayers.Keywords: SMA, numerical analysis, road pavement, stress-strain