01090145

Component

Fatigue testing of asphalt materials has been used to characterize traffic induced damage accumulation process in asphalt pavement resulting in development of cracks that are observable on pavement surface. A major challenge in current asphalt fatigue testing method is the significant amount of time required. Over the years, different approaches have been proposed as surrogate test for asphalt mixture. Instead of asphalt mixture, this study propose a surrogate test for asphalt binder considering it is more simple to do in terms of needed equipment and sample preparation. In this study, stress sweep test is proposed. By utilizing the rapid damage accumulation by increasing the applied stress magnitude from one cycle to the next, one can obtain similar information to that of fatigue testing. A comparison with field performance data from FHWA ALF study is used to check findings based on laboratory test results. Stress sweep test is found to be a promising test as shown with strong correlation with time sweep test result and similar ranking with ALF results.

01084478

08-1356

English

17p

2008

Transportation Research Board 87th Annual Meeting

DVD

Figures (6) ; References (19) ; Tables (10)

Asphalt mixtures; Binders; Bituminous materials; Cracking; Failure; Field tests; Pavement distress; Pavement performance

Accelerated loading facilities; Surrogates

Highways; Materials; I31: Bituminous Binders and Materials

Transportation Research Board Annual Meeting 2008 Paper #08-1356

TRIS, TRB

Jan 29 2008 3:43PM