Rejuvenator use‎ > ‎

Micro-mechanics and rheology

Micromechanical and rheological properties of rejuvenated binder


100% Recycled Hot Mix Asphalt: A Review and Analysis, (2014), Resour Conserv Recy 92: 230-245  
Influence of Six Rejuvenators on the Performance Properties of Reclaimed Asphalt Pavement (RAP) binder and 100% recycled asphalt mixtures, (2014), Cons Build Mat 71: 538-550  
Determining optimum rejuvenator dose for Asphalt Recycling Based on Superpave Performance Grade Specifications, (2014), Cons Build Mat 69: 159-166  
Review of very high-content reclaimed asphalt use in plant-produced pavements: state of the art, (2015), Int J  Pavement Eng 16 (1): 39-55  
Evaluation of Different Recycling Agents for Restoring Aged asphalt Binder and Performance of 100% Recycled Asphalt, (2014), Mater Struct  
Rheological, microscopic, and chemical characterization of the rejuvenating effect on asphalt binders, (2014), Fuel 135: 162-171
Evaluation of Rejuvenator's Effectiveness with Conventional Mix Testing for 100% Reclaimed Asphalt Pavement Mixtures, (2013) Transp Res Rec 2370 (1): 17-25  
Finite element modeling of rejuvenator diffusion in RAP binder film – simulation of plant mixing process, RILEM symposium 2013, Stockholm, Sweden, 06.12-14.2013    
Low temperature properties of 100% reclaimed asphalt pavement mixtures, 5th European Asphalt Technology Association, Braunschweig, Germany, 06.03-05.2013       
Use of Rejuvenators for Production of Sustainable High Content RAP Hot Mix Asphalt, 28th International Baltic Road Conference, Vilnius, Lithuania, 08.26-28.2013
Interactive presentation of Phase I results and research plans
In this stage of the research, two asphalt binders from the Materials Reference Library of SHRP were aged, and rejuvenated with two distinctive rejuvenators, and the rheological properties of the virgin, aged, and rejuvenated binders were tested using dynamic shear rheometer. In order to better understand the rejuvenating effect, microscopic properties and chemical composition of the binders were also measured using atomic force microscope (AFM) and SARA (Saturates, Aromatics, Resins, Asphaltenes) fractionation, respectively. Results indicated that the mechanical properties (complex modulus and viscosity) of the rejuvenated binders were in between those of the virgin and aged binders, which is qualitatively consistent with the AFM mechanical measurements. Chemical analysis suggested that changes in chemical compositions were responsible for the stiffening effect of aging and the improvement of mechanical properties with the addition of the rejuvenators