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RESEARCH PRODUCT
Effects of Laboratory Aging on Properties of Biorejuvenated Asphalt Binders
Ana Jiménez Del Barco CarriónDavide Lo PrestiFilippo GiustozziAlessandro Borghisubject
Materials scienceasphalt binderAging of materialMetallurgy0211 other engineering and technologiesAsphalt020101 civil engineering02 engineering and technologyBuilding and Construction0201 civil engineeringMechanics of MaterialsAsphalt021105 building & constructionGeneral Materials SciencebiorejuvenatorComposite materialCivil and Structural Engineeringdescription
This paper presents the results from a laboratory investigation on the effects of aging on the properties of two binders recovered from two different sources of Reclaimed Asphalt (RA) and additivated with a biorejuvenator derived from pine trees. It has been already proven that the rejuvenators are able to restore some of the properties of the aged binder present in the RA, but nowadays their effects into the long-term period are not well known. In this regard, the rejuvenated asphalt binders and a virgin binder, defined as a target, have been aged artificially to simulate short-and long-term aging. All binders have been studied conducting physical, chemical, rheological, and performance-related tests at three different aging levels. Results show that physical and rheological properties can be fully restored by the addition of the proper dose of rejuvenator, while the chemical composition should be investigated in more detail. Rejuvenated binders exhibit great long-term performance especially at high and low temperatures, but also show significant resistance against fatigue at intermediate temperatures.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-10-01 | Journal of Materials in Civil Engineering |