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Title: Evaluation of Rejuvenator’s Effectiveness with Conventional Mix Testing for 100% Reclaimed Asphalt Pavement Mixtures
Accession Number: 01474739
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: This paper presents research evaluating the effectiveness of rejuvenators for production of very high (40% to 100%) reclaimed asphalt pavement (RAP) content mixtures. Nine differently originated softening agents were tested; these included plant oils, waste-derived oils, engineered products, and traditional and nontraditional refinery base oils. Two different dosages of the agents were added to binder extracted from RAP to evaluate their softening potential through testing of kinematic viscosity and penetration at two different temperatures. At 25°C the softening efficiency varied by a factor of 12 between the most and least effective rejuvenators. Consistency results at different temperatures were used to express temperature susceptibility by means of penetration index (PI), penetration–viscosity number, and bitumen test data chart of the softened binders. The PI results varied measurably depending on the rejuvenator and supported the low-temperature mixture test results, showing that PI may be a good and simple measure of rejuvenation effectiveness. Low-temperature mixture embrittlement was evaluated at –10°C through determination of the indirect tensile strength and creep compliance for rejuvenated 100% RAP mixture samples. It can be concluded that four of the nine tested rejuvenators reduced extracted binder consistency to the necessary level and reduced susceptibility of RAP mixtures to low-temperature embrittlement. Of the four, two engineered products tested had notably different performance but neither was superior to similar generic oils.
Monograph Title: Monograph Accession #: 01500280
Report/Paper Numbers: 13-1447
Language: English
Authors: Zaumanis, MartinsMallick, Rajib BFrank, RobertPagination: pp 17-25
Publication Date: 2013
ISBN: 9780309286886
Media Type: Print
Features: Figures
(7)
; References
(13)
; Tables
(3)
TRT Terms: Uncontrolled Terms: Subject Areas: Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials
Files: TRIS, TRB, ATRI
Created Date: Feb 5 2013 12:22PM
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