Evaluating the effect of rejuvenators on the degree of blending and performance of high RAP, RAS, and RAP/RAS mixtures

Rheological characterization of asphalt binders treated with bio sealants for pavement preservation

“…In many publications, these materials are referred to as that adding a recycling agent (i.e., a rejuvenator) can be helpful to restore the 9 performance properties of recycled binder to offset the higher binder stiffness and 10 improve the mixture resistance to cracking when high RAP/RAS contents are used.…”

“…Boyer (2000) concluded that it is better to 17 apply two or more low-rate applications of the emulsion to achieve the proper rate of 18 application than to make only on pass and have it be too heavy (Boyer 2000 The selection was based on the availability of materials and construction projects 10 mentioned above in which bio-sealants were used. A description of these materials is 11 provided below.…”

Evaluation of the fatigue performance of fine aggregate matrices prepared with reclaimed asphalt pavements and shale oil residue

“…Mohammadafzali et al (2015) also called people's attention to the fact that the highest aging rates were observed for the binder rejuvenated with the bio-rejuvenator, which points out the importance of taking the effect of long-term aging into account when such sort of product is used as a rejuvenating agent. Mogawer et al (2013) reported that the rejuvenators were able to reduce the resulting binder stiffness and increase the resistance of the HMA to cracking formation. Some researchers had studied the effect of different rejuvenators in the light of performance-based specifications and developed blending charts based on the Superpave binder tests, using conventional and modified asphalt binders (Shen et al, 2007b;Zaumanis et al, 2014a).…”

“…When the rejuvenator is selected adequately, the properties of HMA mixtures using RAP are generally satisfactory (Little et al, 1981;Epps et al, 1980). Studies reported the positive effect of the use of rejuvenators, especially on the resistance of the HMA cracking formation (Shen et al, 2007a,b;Asli et al, 2012;Silva et al, 2012;Hajj et al, 2013;Hill et al, 2013;Mogawer et al, 2013;Zaumanis et al, 2013;Im et al, 2014, Yu et al, 2014Zaumanis et al, 2014b).…”

“…According to Mogawer et al (2013), addition of rejuvenators was also needed to produce mixtures with resistance to low-temperature cracking comparable to the control mixture. The use of polymer-modified binders alone was not able to always yield a resistance to low-temperature cracking comparable to the control mixture and the combination of polymer-modified binder and rejuvenator had a varied effect on the resistance to low-temperature cracking, even though all the mixtures performed better than the control one.…”