Abstract. The present study has been developed to investigate the combined effect of 20 % de-icing salts solutions (calcium chloride, magnesium chloride and sodium chloride) and freeze and thaw (F–T) cycles on bituminous binders and asphalt mixture performance at medium and low service temperatures. In the study were included conventional and SBS-polymer modified bitumen with amido-amines...
Abstract. The mechanism of moisture damage at the bitumen-aggregate in-terface is a crucial but unresolved issue in pavement engineering. In this pa-per, an innovative molecular dynamics (MD) modeling approach was de-veloped to address this challenge. This method incorporates nanoscale moisture diffusion and migration into consideration, which provides a more accurate representation of the...
Abstract. In this experimental laboratory study, a 0-10mm bituminous surface mix (ESG-10) was developed with a softer and unmodified bi-tumen PG58S‒28 for standard traffics and cold regions and, with 0, 5 and 20% softwood Kraft lignin that was added by the dry process i.e., directly in the hot mix asphalt (HMA). The study encompassed the evaluation of compactability, moisture sensitivity,...
Abstract. The output of the gyratory compactor is frequently used to design and study the asphalt mixture properties, such as compacity and workabil-ity. To exploit some characteristics of these curves the use of fitting models is recommended. The sigmoidal model is one of the fitting models with more potential due to the possibility of identifying several particularities of the...
Abstract. Interface shear strength of road pavements plays a crucial role on overall structural performance. Interface between asphalt layers is common-ly treated by applying a bituminous tack coat emulsion. Specific pavement structures such as the Asphalt Solar Collectors (ASCs) can be constructed installing pipes or coils at the above-mentioned interfaces. Given this background, the present...
Abstract. The integration of healing capsules into asphalt mixtures has demonstrated promising advancements in their intrinsic self-healing prop-erties. However, the efficacy of this technology still requires further inves-tigation. Rigid particle models, utilizing the discrete element method (DEM), have been adopted to simulate the creep, fracture, and viscoelastic behavior of asphalt...
