Evaluation of the rejuvenation of asphalt by means of oil-saturated porous aggregates

Road degradation is an increasing problem for assets managers. Roads deteriorate mainly due to the combination of different factors, such as temperature, climate and traffic loads. This causes asphalt age and, consequently, bituminous mixtures become more fragile microcracks begin appear. To eliminate these effects, most widely used performed actions are based on renovation pavement achieve surface under acceptable conditions use. In order reduce application corrective measures when already facing significant defects, it important perform regular preventive maintenance that minimise works improves durability. paper shows a method continuous rejuvenation asphalt, by analysing evolution mixture stiffness resistance cracking with rejuvenator added after having been submitted laboratory ageing protocol (short long-term ageing). The was following either two procedures: first, directly second, saturated in porous aggregates, what authors call encapsulated. Results from this study demonstrate effectiveness second (encapsulated rejuvenator) original solution performance reduced cracking.