01594647

Component

https://doi.org/10.3141/2574-01

Re-refined engine oil bottom (REOB), one of several products obtained from refining recovered engine oil, has been used in the asphalt industry since the 1980s. Generally, REOBs are used to help soften the base asphalt binder and are commonly used from 3% to 10% by weight to achieve desired low temperature asphalt binder properties. Recently, blame for poor cracking performance in a number of Canadian and northern U.S. pavement sections has been laid on the use of REOBs. This issue has prompted state agencies in the northeast United States to ban its use, without necessarily understanding how REOB affects asphalt binder and mixture performance. A research effort was conducted to evaluate the laboratory performance of asphalt binders and mixtures modified with REOB. Performance grading, master stiffness curves, the double-edge notch tension test (DENT), and black space analysis were conducted on the asphalt binders at different levels of laboratory aging. The research study showed that while being able to achieve softer asphalt binder grades in accordance with AASHTO R29, the addition of REOB accelerated the age-hardening effects in the asphalt binder, with higher levels of age hardening occurring at higher REOB dosage rates. The study also indicated that while the stiffness properties at low temperatures were not affected by REOB, the relaxation properties were highly affected. The black space analysis, using the Glover–Rowe approach, and the DENT test showed promise in identifying the age-hardening effects and correlated well with mixture fatigue cracking.

01616111

16-5138

English

pp 1–16

2016

Transportation Research Record: Journal of the Transportation Research Board

9780309441148

Print

Figures (9) ; References (24) ; Tables (1)

Asphalt based materials; Bituminous binders; Engine oils; Fatigue cracking; Pavement performance

Recycled engine oil bottoms

Highways; Materials; Pavements

TRIS, TRB, ATRI

Jan 12 2016 6:14PM

• 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 Polymer and Oil Modification on the Aging Susceptibility of Asphalt Binders
• 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
• 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