The Properties of Asphalt Binder Blended with Variable Quantities of Recycled Asphalt using Short Term and Long Term Aging Simulations
Document Type
Article
Publication Date
1-2012
Department
Department of Civil, Environmental, and Geospatial Engineering
Abstract
The objective of this paper is to characterize the rheological properties of asphalt binders blended with various amounts of asphalt extracted from a recycled asphalt pavement (RAP) mixture. Three asphalt binder aging states were simulated and evaluated: unaged, rolling thin film oven (RTFO) aged, and pressure aging vessel (PAV) aged. A Superpave PG 58-28 binder was applied as control binder and another four RAP binder percentages were studied in this research, 30%, 50%, 70% and 100%. Rotational viscosity testing was conducted with a Brookfield viscometer. Temperature and frequency sweep tests were conducted using a dynamic shear rheometer. Master curves were constructed based on the dynamic shear moduli (G*). The results showed that there are significant differences in dynamic shear moduli (G*) master curve performance for high percentage RAP binder blends versus virgin binders at the three aging states. Increasing RAP concentration and further aging conditions contribute to the increased stiffness and viscosity of RAP binder blends.
Publication Title
Construction and Building Materials
Recommended Citation
Colbert, B.,
&
You, Z.
(2012).
The Properties of Asphalt Binder Blended with Variable Quantities of Recycled Asphalt using Short Term and Long Term Aging Simulations.
Construction and Building Materials,
26(1), 552-557.
http://doi.org/10.1016/j.conbuildmat.2011.06.057
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/6175
Publisher's Statement
© 2011 Elsevier Ltd. All rights reserved.