METHODOLOGY FOR DEFINING LMS PORTION IN ASPHALT CHROMATOGRAM

This paper offers a procedure for defining relative quantity of the large molecular size (LMS) fraction using selected asphalt cements. The physical properties and chromatogram of two viscosity grades of three asphalt cements were artificially aged and analyzed. Each chromatogram was divided into 30 equal-time slices and the relative quantity of each slice was calculated. Regression analysis was used to determine the correlation between relative quantity of LMS and each physical property. The relative quantity of individual slices was assessed to establish correlation with each physical property. The results of analyses using the procedure developed by the authors indicate that in the front part of the chromatogram there exists a portion that has a high correlation with selected asphalt properties. Therefore, the LMS should be defined by this portion. Also, within the LMS portion, the authors observed an individual slice by which the three properties could best be predicted.

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  • English

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  • Accession Number: 00675544
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 29 1995 12:00AM