View in EDS

Laboratory evaluation of rutting susceptibility of polymer-modified asphalt mixtures containing recycled pavements

Saved in:
Bibliographic Details
Title: Laboratory evaluation of rutting susceptibility of polymer-modified asphalt mixtures containing recycled pavements
Authors: Bernier, Alexander1 alex.bernier@engr.uconn.edu, Zofka, Adam azofka@engr.uconn.edu, Yut, Iliya1 ily08001@engr.uconn.edu
Source: Construction & Building Materials. Jun2012, Vol. 31, p58-66. 9p.
Subjects: Structural dynamics, Shear (Mechanics), Asphalt pavements, Binding agents, Rheometers, X-ray diffraction, X-ray spectroscopy
Abstract: Abstract: This paper presents the results of the laboratory study on rutting susceptibility of polymer-modified asphalt mixtures containing Reclaimed Asphalt Pavement (RAP). Accelerated rutting tests were conducted in the Asphalt Pavement Analyzer (APA) and binders were evaluated in the Dynamic Shear Rheometer in order to construct dynamic shear modulus (|G ∗|) master curves and to evaluate their viscoelastic and recovery properties using the Multi-Stress Creep Recovery Test (MSCR). Polymer content and level of oxidation of different binders were analyzed using an Attenuated Total Reflection Fourier Transform Infrared spectrometer while X-ray diffraction and X-ray fluorescence spectrometers were employed to verify the mineral content of RAP aggregates. The effect of RAP binder on the APA and MSCR results showed reasonable correlation with reduced rutting for less-modified binders. Highly-modified binders were the least affected. Aggregate properties of RAP mix had a noticeable effect on rutting results and adding RAP binder to the mix lead to reduced rutting. [Copyright &y& Elsevier]
Copyright of Construction & Building Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:Abstract: This paper presents the results of the laboratory study on rutting susceptibility of polymer-modified asphalt mixtures containing Reclaimed Asphalt Pavement (RAP). Accelerated rutting tests were conducted in the Asphalt Pavement Analyzer (APA) and binders were evaluated in the Dynamic Shear Rheometer in order to construct dynamic shear modulus (|G ∗|) master curves and to evaluate their viscoelastic and recovery properties using the Multi-Stress Creep Recovery Test (MSCR). Polymer content and level of oxidation of different binders were analyzed using an Attenuated Total Reflection Fourier Transform Infrared spectrometer while X-ray diffraction and X-ray fluorescence spectrometers were employed to verify the mineral content of RAP aggregates. The effect of RAP binder on the APA and MSCR results showed reasonable correlation with reduced rutting for less-modified binders. Highly-modified binders were the least affected. Aggregate properties of RAP mix had a noticeable effect on rutting results and adding RAP binder to the mix lead to reduced rutting. [Copyright &y& Elsevier]
ISSN:09500618
DOI:10.1016/j.conbuildmat.2011.12.094