Evaluation of oven simulation of hot-mix aging by an FT-IR pellet procedure and other methods
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The long-established KBr pellet technique for IR analysis has been adapted for analyzing asphaltic materials. The procedure is highly reproducible and produces spectra that can be compared, with no normalization or other correction beyond normal background subtraction and baseline zeroing. Analysis of oven-aged and hot-mix asphalt samples by FT-IR, viscosity, penetration, and gel permeation chromatography provides comparisons for studies of asphalt aging. In a limited study, viscosity and penetration values for the hot-mix and for thin-film and rolling thin-film, oven-aged residues agreed quite well. However, the GPC and FT-IR analyses showed some significant differences.
Transportation Research Record
author list (cited authors)
Glover, C. J., Davison, R. R., Ghoreishi, S. M., Jemison, H. B., & Bullin, J. A.
complete list of authors
Glover, CJ||Davison, RR||Ghoreishi, SM||Jemison, HB||Bullin, JA