A Quantitative Method Using HP-GPC to Predict Laboratory Results of Asphalt
Cement Tests
Richard P. Price and James L. Burati, Jr.
Abstract
The main objective of this study was to present a method for systematically analyzing
chromatograms, and in so doing, to demonstrate the method's value in predicting
performance of asphalts in laboratory tests for asphalt cement. The laboratory tests on
asphalt cement that were compared to HP-GPC characterization were: specific gravity,
penetration, ductility, absolute viscosity, kinematic viscosity, thin film oven test loss, and
absolute and kinematic viscosity on thin film oven test residue. Four derived values from
these data were also used: ratio of absolute viscosities before and after thin film oven test,
ratio of kinematic viscosities before and after thin film oven test, penetration-viscosity
number, and viscosity-temperature susceptibility. The second objective was to use a
different AC-20 to test the prediction models.