Abstract. As part of ongoing research study two different methodologies of stiffness determination have been compared. Stiffness tests on a selection of Asphalt Concrete mixtures (AC) containing various contents of reclaimed asphalt have been performed using the indirect tensile test on cylindrical specimen with pulse load form (IT-CY) and 4-point bending test with prismatic specimens...
Abstract. This paper presents the properties of hot- and warm-mix asphalt concrete and possible use in pavements using a high rate of RAP (reclaimed asphalt pavement) and waste cooking oil (WCO). Laboratory experiments delivered results on the mixtures' essential volumetric and Marshall charac-teristics and their several mechanical performance parameters. These out-comes are used to deliver a...
Abstract. Annually, approximately 120 million tons of asphalt pavement are milled, resulting in the generation of Reclaimed Asphalt Pavement (RAP). Despite its advantages, fully maximizing RAP usage poses challenges, particularly as RAP content exceeds 20%, leading to a reduction in pavement resistance to cracking. The aging of asphalt binder, which causes increased stiffness and...
Abstract. Reclaimed asphalt pavement (RAP) materials constitute aged binders that warrant recycling to achieve the required rheological proper-ties. For this purpose, recycling agents are added to the RAP materials to ‘soften’ the aged binder and meet the target rheological response. The rheo-logical response of the recycled binders, particularly their sensitivity to temperature changes,...
Abstract. Polymer-modified bitumen performs better at different tempera-tures and loading conditions than pure bitumen. Therefore, using this type of bitumen in recycled asphalt mixtures containing reclaimed asphalt (RA) material can lead to a better performance than pure bitumen. However, the presence of a very hard and aged binder in the RA, especially for high RA incorporation ratios, may...
