2005•Journal of Highway and Transportation Research and DevelopmentRequires access

Asphalt-Aggregate Mixtures Aging Simulation Test Study Method

Xiaoning Zhang

Abstract

This paper studied the aging effect of Short Term Oven Aging method and Long Term Oven Aging method on asphalt mixes.Penetration,Brookfield Viscosity and DSR Frequency Sweeping tests were used to evaluate the aging of the different aged asphalt reclaimed from the STOA and LTOA mixes.Compared with the results from original asphalt,RTFO asphalt and PAV asphalt,it is pointed that the aging of the asphalt reclaimed from the LTOA mixes and the asphalt after PAV aging are normally close,however,the aging of the asphalt reclaimed from the STOA mixes is a little more serious than the asphalt after RTFO aging.The results indicate that the consideration of aging during the asphalt mixture performance evaluations is necessary.

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Key concepts: Asphalt, Asphalt pavement, Aggregate (composite), Rut, Geotechnical engineering, Materials science, Environmental science, Forensic engineering