The undergoing research study offers a new perspective on aging properties of asphalts from multiple crude sources. Nine SHRP core asphalts are modified by adding a crosslinked di-block Styrene-Butadiene polymer and oxidized in recently proposed compact aging apparatus consisting of Attenuated Total Reflection spectrometer and Aging Cell (ATRAC). Oxidation rates of original/aged and modified/non-modified asphalt samples in ATRAC are used to rank asphalt performance at high and intermediate temperatures. In addition, an innovative 2-D Correlation Spectroscopy method is applied to spectral data to compare aging kinetics of SHRP asphalts and evaluate significance of the effect of crude source on aging properties of asphalts in presence of polymer additive.

Application of 2D correlation spectroscopy to evaluation of oxidized polymer-modified asphalts

245th National Meeting (2013)

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