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Rheology of warm mix asphalt binders with aged binders

✍ Scribed by Hakseo Kim; Soon-Jae Lee; Serji N. Amirkhanian

Book ID
104017304
Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
720 KB
Volume
25
Category
Article
ISSN
0950-0618

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✦ Synopsis

This study addresses the rheological investigation of properties of warm mix asphalt (WMA) binders containing long-term aged binders. The recycled binders with the additives were produced using two (i.e., zeolite Aspha-min Γ’ and wax Sasobit Γ’ ) of the available warm asphalt processes. The main rheological factors selected in this study were relationships between loading and response as a function of time, temperature and frequency using a Bohlin Dynamic Shear Rheometer II. The results indicated that the addition of Sasobit Γ’ into recycled binders played an important role in determination of the binder properties evaluated in this study. The use of lower performance grade (PG) as a virgin binder (PG 58-28 in this study) was critical on offsetting the change of rheological binder properties due to the warm additives and the aged binders.

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