01324881

Component

https://doi.org/10.3141/2179-10

http://scholar.google.com...+Kim&publication_year=2010

The fatigue performance of asphalt binder is critical to understanding the fatigue performance of asphalt mixtures, especially the effects of healing. Although research into the fatigue and healing characteristics of asphalt binder is found in numerous references, an efficient technique to evaluate these characteristics still does not exist. Thixotropy is a concept that may help explain the material behavior and provide an efficient evaluation technique. This property is related to the breakdown and buildup of microstructure that may cause the changes observed during fatigue and healing tests. Thus, tracking the thixotropy of asphalt binders may be a good method to study fatigue and healing. For this study, experiments were performed to characterize the fatigue and healing characteristics of three typical asphalt binders. Then a common thixotropic model was characterized with a relatively simple stepped-flow test and oscillation experiment. The resulting model shows good correlation with the measured fatigue and healing tests. This finding, though based on a limited number of binders, suggests that thixotropy may play a role in the fatigue and healing characteristics of asphalt binder.

01324883

10-3385

English

pp 85-92

2010

Transportation Research Record: Journal of the Transportation Research Board

9780309160520

Print

Figures (5) ; References (28) ; Tables (3)

Asphalt mixtures; Bituminous binders; Fatigue (Mechanics); Laboratory tests; Mathematical models; Microstructure; Thixotropy

Healing (Materials)

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

TRIS, TRB, ATRI

Jan 11 2011 12:48PM

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• Field Evaluation of High Reclaimed Asphalt Pavement–Warm-Mix Asphalt Project in Florida: Case Study
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• New Technique for Measuring Low-Temperature Properties of Asphalt Binders with Small Amounts of Material
• Polyphosphoric Acid Modification of Asphalt
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