01616127

Component

https://doi.org/10.3141/2574-03

Oxidative aging causes hardening of asphalt binders and, consequently, contributes to the deterioration of asphalt pavements. The principal cause of asphalt aging and embrittlement in service is the atmospheric oxidation of molecules with the formation of highly polar and strongly interacting functional groups containing oxygen. Therefore, aging is a complex process in unmodified asphalt binders, and the complexity increases for modified binders. The dynamics of world resource economics suggest that the asphalt pavement industry should be exploring economically and environmentally sustainable approaches to development, such as the addition of recycled oils to the base asphalt binder, and thus research activities are noteworthy in this area. The effect of oil and polymer modification on asphalt binder rheology and oxidative aging has become a popular topic for research in recent years. However, the effects of oil and polymers are often studied independently. The objective of this study was to investigate the modification effects of biooil, re-refined wasted engine oil, polymers, and the interaction between polymers and oil on the aging susceptibility of asphalt binders. After laboratory accelerated aging procedures were conducted, dynamic shear rheometer and bending beam rheometer tests were used for the rheological performance evaluation. Gel permeation chromatography and Fourier transform infrared spectroscopy were used to verify the rheological results with chemical analysis tools. Results indicate that the aging susceptibility of modified asphalt binders is dependent on modification chemistry. Certain polymers and combinations of polymers with oil can reduce the base asphalt binder’s susceptibility to aging.

01616111

16-5683

English

pp 28-37

2016

Transportation Research Record: Journal of the Transportation Research Board

9780309441148

Digital/other

Figures; References; Tables

Aging (Materials); Asphalt; Binders; Deterioration; Oxidizers; Pavements; Polymers

Highways; Materials; Pavements

TRIS, TRB, ATRI

Nov 3 2016 4:53PM

• Blending Measurements in Mixtures with Reclaimed Asphalt: Use of Scanning Electron Microscopy with X-Ray Analysis
• Detection and Estimation of Re-Refined Engine Oil Bottoms in Asphalt Binders: Texas Department of Transportation’s Approach with Wavelength Dispersive X-Ray Fluorescence Spectroscopy
• Direct Tensile Test to Assess Healing in Asphalt
• Effect of Rejuvenators on Rheological, Chemical, and Aging Properties of Asphalt Binders Containing Recycled Binders
• Evaluating Diffusion and Aging Mechanisms in Blending of New and Age-Hardened Binders During Mixing and Paving
• Fatigue Performance of Re-Refined Engine Oil Bottom–Modified Asphalt: Laboratory Study
• High-Temperature Properties of Asphalt Binders: Comparison of Multiple Stress Creep Recovery and Performance Grading Systems
• Investigation on the Development of Asphalt Mixture Limit Criteria for Low-Temperature Cracking
• Measuring Adhesion Between Modified Asphalt Binders and Aggregate Minerals: Use of Particle Probe Scanning Force Microscopes
• Quantifying the Thermomechanical Response of Bitumen from Microphase Properties
• Rolling Thin Film Oven Test and Pressure Aging Vessel Conditioning Parameters: Effect on Viscoelastic Behavior and Binder Performance Grade
• Study of Evolution of Asphalt Binder Microstructure Resulting from Aging and Tensile Loading
• Study of Moisture Impact on Asphalt Before and After Oxidation Using Molecular Dynamics Simulations
• Temperature Effects of Linear Amplitude Sweep Testing and Analysis