01479017

Component

https://doi.org/10.3141/2370-15

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

Traditionally, aging studies of asphalt materials have been conducted primarily on asphalt binders only and have omitted any potential influence of the aggregate. These results are commonly extrapolated to the mixture behavior without a comprehensive understanding of how the mixture characteristics may potentially influence the aging of the binder within the mixture. This study was initiated by FHWA to evaluate the effects of mixture parameters—namely, different aggregate and asphalt binder sources, air voids, and binder contents—on the aging characteristics of asphalt binders aged in mixtures. Those same binders were also aged in pressure aging vessel (PAV) pans in laboratory ovens to determine the aging characteristics of the asphalt binders, as is the current state of practice. These characteristics were determined by the binder kinetics, with respect to the carbonyl area measured from the Fourier transform infrared spectroscopy spectra as a function of aging time and temperature. The hardening susceptibility (HS) of the asphalt binders, as defined by the relationship between the low shear viscosity and the carbonyl area, was also determined. The HS of the asphalt binders aged in the mixtures was compared with the HS of the binders aged in the PAV pans and was found to be statistically dissimilar for some mixtures and statistically similar for others. The analysis revealed that the effective binder content of the mixtures provided the strongest indicator of whether the evaluated mixture parameters would have a significant influence on the aging characteristics of the asphalt binder in the mix.

01500280

13-2070

English

pp 116–127

2013

Transportation Research Record: Journal of the Transportation Research Board

9780309286886

Print

Figures (6) ; References (20) ; Tables (2)

Aging (Materials); Asphalt hardening; Bituminous aggregates; Bituminous binders; Hot mix asphalt; Mix design; Oxidation

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

TRIS, TRB, ATRI

Feb 5 2013 12:28PM

• Analysis of Five-Point Bending Test for Multilayer Surfacing System on Orthotropic Steel Bridges
• Critical Problems with Using the Asphalt Ductility Test as a Performance Index for Modified Binders
• Effect of Crumb Rubber Modifier Dissolution on Storage Stability of Crumb Rubber–Modified Asphalt
• Effectiveness of Antistrip Agents in Asphalt Mixtures
• Evaluation of Low-Temperature Properties of Asphalt Binders and Mixtures
• Evaluation of Rejuvenator’s Effectiveness with Conventional Mix Testing for 100% Reclaimed Asphalt Pavement Mixtures
• Evolution of the Crossover Modulus with Oxidative Aging: Method to Estimate Change in Viscoelastic Properties of Asphalt Binder with Time and Depth on the Road
• Experimental Evaluation of Shear Resistance of Improved Steel–Asphalt Interfaces
• First Observation of Blending-Zone Morphology at Interface of Reclaimed Asphalt Binder and Virgin Bitumen
• Linear and Nonlinear Viscoelastic Analysis of Bituminous Mortar
• Low-Temperature Oxidation Kinetics of Asphalt Binders
• Mechanism of Crumb Rubber Modifier Dissolution into Asphalt Matrix and Its Effect on Final Physical Properties of Crumb Rubber–Modified Binder
• Quality and Durability of Warm Rubberized Asphalt Cement in Ontario, Canada
• Recovery and Laboratory Testing of Asphalt Emulsion Residue: Application of Simple Aging Test and 4-mm Dynamic Shear Rheometer Test
• Recycled Asphalt Shingle Binder Characterization and Blending with Virgin Binders
• Revision and Further Validation of Surface Performance-Graded Specification for Chip Seal Binders
• Simplification of Linear Amplitude Sweep Test and Specification Parameter