Effects of Rejuvenating Agents on Superpave Mixtures Containing Reclaimed Asphalt Pavement

Rejuvenator is not a commonly used softening agent to be used in recycling of reclaimed asphalt pavement (RAP). In this study, Superpave mixtures containing RAP were designed using rejuvenating agents, including a rejuvenator and a softer binder, and subsequently evaluated in terms of the volumetric...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials in civil engineering 2007-05, Vol.19 (5), p.376-384
Main Authors: Shen, Junan, Amirkhanian, Serji, Aune Miller, Jennifer
Format: Article
Language:English
Subjects:
Applied sciences
Bitumen. Tars. Bituminous binders and bituminous concretes
Buildings. Public works
Exact sciences and technology
Materials
Recovery materials
Road construction. Pavements. Maintenance
Surfacing
TECHNICAL PAPERS
Transportation infrastructure
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Rejuvenator is not a commonly used softening agent to be used in recycling of reclaimed asphalt pavement (RAP). In this study, Superpave mixtures containing RAP were designed using rejuvenating agents, including a rejuvenator and a softer binder, and subsequently evaluated in terms of the volumetric results, obtained the indirect tensile strength (ITS) of samples as well as evaluating the mixtures for rutting using the asphalt pavement analyzer (APA). The content of the rejuvenator used for those mixtures containing the rejuvenator was determined from the blending charts of RAP binders containing the rejuvenator. A total of 12 Superpave mixtures including 10 containing RAP and two virgin were designed. The results indicated, for the mixtures tested for this project, that: (1) properties of the recycled mixtures using the rejuvenator, such as ITS and APA, were better than those containing the softer binder; (2) 10% more RAP could be incorporated in the Superpave mixtures by using the rejuvenator than using the softer binder; and (3) the blending charts established under the Superpave binder specifications can be used to determine the content of the rejuvenator for the recycling.
ISSN:0899-1561
1943-5533
DOI:10.1061/(ASCE)0899-1561(2007)19:5(376)