1963•Unpublished venueRequires access
ASPHALT VISCOSITY AS RELATED TO PAVEMENT PERFORMANCE
T L Speer, L C Brunstrum, A W Sisko, Lionel Ott, J. Grimley Evans
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Abstract
In this research, simulated severe traffic on a miniature test track was used to determine the effect of asphalt properties on pavement performance. Pavements were made by 2 construction procedures and tested over temperatures from 60-140 deg. F. For a given pavement construction, the log of rut depth/million wheel passes was linearly related to the log of asphalt viscosity. Viscosity was the major variable in this temperature range and overshadowed the effect of other asphalt properties and of pavement characteristics. Equations relating rutting to asphalt viscosity and temperature were developed. The results support the practicality of grading systems based on asphalt viscosities at pavement temperatures.