Time-Temperature-Age Superposition Validation for Linear Viscoelastic Properties of Bituminous Materials

AbstractAging, as an integral part of organic materials like asphalt binder, imposes a significant effect on chemical, physical, and performance-related properties of asphalt mixtures. One of the methods that has been proposed for consideration of aging in constitutive models of asphalt binder and a...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials in civil engineering 2018-02, Vol.30 (2)
Main Authors: Naderi, Koorosh, Moghadas Nejad, Fereidoon, Khodaii, Ali
Format: Article
Language:English
Subjects:
Age
Aging
Aging (materials)
Asphalt
Building materials
Civil engineering
Constitutive models
Mathematical models
Organic materials
Phase shift
Superposition (mathematics)
Technical Papers
Viscoelasticity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:AbstractAging, as an integral part of organic materials like asphalt binder, imposes a significant effect on chemical, physical, and performance-related properties of asphalt mixtures. One of the methods that has been proposed for consideration of aging in constitutive models of asphalt binder and asphalt mixtures within a linear viscoelastic range is time-temperature-age superposition of material function master curves. However, use of this method has not yet been verified for different bituminous materials. Thus, in this study, the validity of time-temperature-age superposition for different bituminous materials was tested. Furthermore, a valid framework to apply time-temperature-age superposition to viscoelastic material functions of asphalt binders was proposed. Oscillation tests within linear viscoelastic limits of asphalt binder and asphalt mixtures were applied on laboratory-aged specimens. Phase angle and complex modulus master curves were determined and the applicability of time-temperature-age shifting was evaluated. The results suggest that temperature-independent horizontal shift factors can be considered for asphalt binders. Furthermore, dynamic modulus testing of the asphalt mixtures at different aging levels shows that because of a local maximum existing in the phase angle master curve of asphalt mixture, horizontal and vertical shift factors cannot yield a superposition of the phase angle master curves. It can be concluded that time-temperature-age shifting cannot be used to implement aging in the constitutive models of asphalt mixtures.
ISSN:0899-1561
1943-5533
DOI:10.1061/(ASCE)MT.1943-5533.0002162