HIGH PRESSURE LIQUID CHROMATOGRAPHY AS A METHOD OF MEASURING ASPHALT COMPOSITION

The molecular size composition of asphalt as determined by high pressure liquid chromatography (HPLC) has been related to the performance of bituminous roadways in the state of Montana. HPLC and asphaltenes analyses have been used to define the characteristics of an asphalt which has shown satisfactory durability and longevity. These characteristics have been proposed as a model of high quality asphalt. HPLC has been used to characterize the the asphalts produced by each of Montana's refineries. It has also been used to follow the changes in the molecular size distribution which result from mixing with aggregate and with lime. These results suggest that the molecular size characteristics of asphalt may be engineered to more closely approach the model. It is also suggested that HPLC analysis may be valuable in designing pavement recycling projects. HPLC has been shown to be a more accurate measure of asphalt quality than asphaltenes content, penetration or ductility. (FHWA)

• Corporate Authors:

  Montana State University, Bozeman

  Department of Chemistry
  Bozeman, MT  United States  59717

  Montana Department of Highways

  6th Avenue and Roberts
  Helena, MT  United States  59601
• Authors:
  • Jennings, P W
  • Pribanic, P W
  • CAMPBELL, W
  • DAWSON, K
  • Shane, S
  • Taylor, R
• Publication Date: 1980-3

Media Info

• Pagination: 82 p.

Subject/Index Terms

• TRT Terms: Asphalt content; Asphaltene; Bituminous mixtures; Ductility; Durability; Liquid chromatography; Measurement; Pavement performance; Pavements; Recycling; Service life
• Old TRIS Terms: Pavement life
• Subject Areas: Design; Highways; Materials; Pavements; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00322720
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: FHWA-MT-79-30 Final Rpt.
• Contract Numbers: 7930
• Files: TRIS, USDOT, STATEDOT
• Created Date: Mar 12 1981 12:00AM