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Gel permeation chromatography (GPC), Corbett analysis, Heithaus test and other physical and chemical tests have been used to characterize asphalts and to relate chemical properties, physical properties and performance. The asphalts used in the present study consisted of periodic samples of virgin asphalt from various suppliers to Texas in the last two years, the test pavement asphalts in Dickens, Dumas and Lufkin, Texas from study 287, and a group of asphalts which had been rated according to tenderness.
This report describes a study of asphalts by High Performance Gel Permeation Chromatography (HP-GPC). The asphalts were obtained from pavements in 15 states. Performance of the pavements with respect to cracking (especially transverse cracking) was compared with the HP-GPC data. General trends were found in this study.