01554088

Component

https://doi.org/10.3141/2505-05

An investigation was conducted into several commonly used rheological indexes and their influence on oxidation studies. The evaluation considered the low shear viscosity; the dynamic shear rheometer function, or Glover–Rowe parameter; the dynamic shear crossover modulus (Gc*) value; and parameters from the Williams–Landel–Ferry and Kaelble shift functions as the rheological indexes in a comparative oxidation characterization between two example asphalt binders. In general, each respective methodology was found to correlate with increasing levels of oxidation but resulted in differing outcomes with respect to oxidation, which depended on the evaluation methodology used. Although each method presented its own merit and respective limitations, a single preferential method was not readily identified. However, the critical need for reliable and sound rheological measures and data processing procedures was clearly demonstrated. This evaluation supported the need for a clear and logical evaluation of the rheological parameters used to characterize asphalt binders. It has been documented that certain rheological indexes have strong correlations to specific distress types or mechanical behaviors and thus may prove beneficial to a particular analysis. However, evaluations must also acknowledge the limitations of selected techniques. When possible, complete characterization through means of the development of full master curves should be beneficial. With sound rheological data and comprehensive measures, several indexes can be determined and provide a more comprehensive view of the investigated material responses.

01587029

15-1614

English

pp 32–40

2015

Transportation Research Record: Journal of the Transportation Research Board

9780309369312

Print

Figures (4) ; References (39)

Aging (Materials); Bituminous binders; Oxidation; Rheological properties; Test procedures

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

TRIS, TRB, ATRI

Dec 30 2014 12:36PM

• Alternative Approach Toward the Aging of Asphalt Binder
• Asphalt Concrete Layer to Support Track Slab of High-Speed Railway
• Backcalculation of Swollen Crumb Rubber Modulus in Asphalt Rubber Binder and Its Relation to Performance
• Comparison of Concentric Cylinder and Parallel Plate Geometries for Asphalt Binder Testing with a Dynamic Shear Rheometer
• Effect of Aging on Adhesion Properties of Asphalt Mixtures with the Use of Bitumen Bond Strength and Surface Energy Measurement Tests
• Effects of Asphalt Source, Asphalt Grade, and Inclusion of Additives on Asphalt Foaming Characteristics
• Effects of Stress Levels on Creep and Recovery Behavior of Modified Asphalt Binders with the Same Continuous Performance Grades
• Evaluation of Oxidization of Crumb Rubber–Modified Asphalt During Short-Term Aging
• Field Validation of a Thermal Cracking Resistance Specification Framework for Modified Asphalt
• Improved Practical Model for Permeability and Implications for the Design of High-Performance Hot-Mix Asphalt
• Modification of the Resistivity-Rutting Model to Use Recoverable Creep Compliance
• Prediction of Rheological and Damage Properties of Asphalt Binders That Result from Oxidative Aging
• Rheological and Chemical Characterization of Biobinders from Different Biomass Resources
• Study of Asphalt Aging Through Beam Fatigue Test
• Wetting Characteristics of Asphalt Binders at Mixing Temperatures