01476017

Component

https://doi.org/10.3141/2373-12

http://scholar.google.com...rian&publication_year=2013

Because of the noted influence of oxidative aging on mixture properties and pavement performance, it is becoming imperative to have a more complete understanding of the influence of asphalt binder aging on the viscoelastic behavior of asphalt mixtures. This study proposes a new approach to correlating the oxidative aging of asphalt binder for carbonyl functional groups with the viscoelastic behavior of asphalt mixtures for a continuous relaxation spectrum. The asphalt mixture complex modulus and the carbonyl area for the recovered asphalt binder were measured for mixtures subjected to varying durations of long-term aging in the laboratory. The continuous relaxation spectrum was obtained analytically from the 2S2P1D model of complex modulus of asphalt mixture through the inverse Fourier–Laplace transform approach. A consistent horizontal shift in the continuous relaxation spectrum was observed for all mixtures with the increase in aging duration. However, the shape and the amount of shifting of the spectra were mixture dependent. In particular, mixtures with higher asphalt binder absorption exhibited the greatest shift in the continuous spectra for both unmodified and polymer-modified asphalt mixtures. Good correlations were observed between the carbonyl in asphalt binder and the continuous relaxation spectrum parameters of the asphalt mixture. Such relationships should permit the incorporation of long-term oxidative aging directly into the constitutive equation used in pavement response analyses.

01517321

13-4560

English

pp 109–120

2013

Transportation Research Record: Journal of the Transportation Research Board

9780309287081

Print

Figures (7) ; References (18) ; Tables (1)

Aging (Materials); Asphalt mixtures; Bituminous binders; Mechanical relaxation; Oxidation; Viscoelasticity

Carbonyl

Highways; Materials; Pavements; I31: Bituminous Binders and Materials

TRIS, TRB, ATRI

Feb 5 2013 12:59PM

• Comparison of Uniaxial and Four-Point Bending Fatigue Tests for Asphalt Mixtures
• Constitutive Modeling of Cyclic Viscoplastic Response of Asphalt Concrete
• Constitutive Modeling of Fatigue Damage Response of Asphalt Concrete Materials
• Development of Calibration Testing Protocol for Permanent Deformation Model of Asphalt Concrete (With Discussion and Closure)
• Laboratory Hot-Mix Asphalt Cracking Testing: Evaluation of Three Repeated Loading Crack Tests
• Laboratory Validation of Healing-Based Fatigue Endurance Limit for Hot-Mix Asphalt
• Local Practice of Assessing Dynamic Modulus Properties for Washington State Mixtures
• Mechanistic-Based Approach to Evaluate Rutting Susceptibility of Hot-Mix Asphalt Mixtures by Use of Dynamic Triaxial Testing
• Modeling Water Vapor Diffusion in Pavement and Its Influence on Fatigue Crack Growth of Fine Aggregate Mixture
• Modified Paris’s Law to Predict Entire Crack Growth in Asphalt Mixtures
• Nonlinear Viscoelastic Behavior of Asphalt Concrete and Its Implication for Fatigue Modeling
• Permanent Deformation Characterization of Asphalt Mixtures by Using Incremental Repeated Load Testing
• Three-Dimensional Microstructural Modeling of Asphalt Concrete by Use of X-Ray Computed Tomography