RAPID METHOD FOR THE CHEMICAL ANALYSIS OF ASPHALT CEMENT: QUANTITATIVE DETERMINATION OF THE NAPHTHENE AROMATIC AND POLAR AROMATIC FRACTIONS USING HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY

An analytical method is described for the rapid quantitative determination of naphthene aromatics (aromatics) and polar aromatics (polars) in asphalt cement using high-performance liquid chromatography (HPLC). The hexane-insoluble asphaltenes are removed beforehand and the petrolene solution passed through an NH2 energy analysis column. After elution of the naphthene aromatics, the solvent flow direction is reversed and the polar aromatics peak follows. Ultraviolet absorption at 254 nm is used for detection. A complete sample run consumes less than 3 hr. Results of analysis agree favorably with those obtained following the short procedure of ASTM D4124. Considering the ASTM D4124 results "correct," the average absolute error for 49 determinations on 22 samples from four different refineries amounted to plus or minus 0.66 and plus or minus 0.82 percentage point for the naphthene aromatics and polar aromatics fractions, respectively. The standard deviation for seven determinations on one sample is 0.89 and 0.45 percentage point for the naphthene aromatics and polar aromatics fractions, respectively.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1989/1228/1228-021.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=RAPID+METHOD+FOR+THE+CHEMICAL+ANALYSIS+OF+ASPHALT+CEMENT%3A+QUANTITATIVE+DETERMINATION+OF+THE+NAPHTHENE+AROMATIC+AND+POLAR+AROMATIC+FRACTIONS+USING+HIGH-PERFORMANCE+LIQUID+CHROMATOGRAPHY&author=S.+Bishara&author=E.+Wilkins&publication_year=1989
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• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1228, Asphalt Mixtures and Asphalt Chemistry. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Bishara, Safwat W
  • Wilkins, Ernie
• Publication Date: 1989

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 183-190
• Monograph Title: Asphalt mixtures and asphalt chemistry
• Serial:
  • Transportation Research Record
  • Issue Number: 1228
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Accuracy; Aromatic hydrocarbons; Asphalt cement; Chemical analysis; Liquid chromatography; Performance; Quantitative analysis; Standard deviation; Ultraviolet radiation
• Uncontrolled Terms: High performance; Rapid methods
• Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00495102
• Record Type: Publication
• ISBN: 0309048230
• Files: TRIS, TRB
• Created Date: Jun 30 1990 12:00AM