Determining Optimum Rejuvenator Dose for Asphalt Recycling based on Superpave Performance Grade Specifications

Construction and Building Materials 2014
Mārtiņš Zaumanis, Rajib B. Mallick, Robert Frank

The changes in Superpave performance grade (PG) of Reclaimed Asphalt Pavement (RAP) binder were determined after addition of two doses of six rejuvenators. The high and low PG temperatures were reduced linearly with an increased dose while the penetration grew exponentially. It was found that the grade sum of rejuvenated RAP binder is always higher than that of the corresponding virgin binder. Based on these conclusions a procedure for optimizing the rejuvenator dose to satisfy the Superpave PG requirements was developed to account for the inevitable variability of the RAP binder due to differences in aging and source

Keywords
Dose, Dosage, Content, Rejuvenator, Recycling agent, Blending chart, PG, Performance grade
DOI
10.1016/j.conbuildmat.2014.07.035
Hyperlink
http://www.sciencedirect.com/science/article/pii/S0950061814007594

Zaumanis, M., Mallick, R., Frank, R. Determining Optimum Rejuvenator Dose for Asphalt Recycling based on Superpave Performance Grade Specifications. Construction and Building Materials, 2014, Vol.69, pp.159-166. ISSN 0950-0618. Available from: doi:10.1016/j.conbuildmat.2014.07.035

Publication language
English (en)