Chemical composition of commercial asphalt cement as determined by high pressure liquid chromatography
Subtitle: [final report]
By: prepared for the State of Montana Department of Highways in cooperation with the U.S. Department of Transportation, Federal Highway Administration by P.W. Jennings ... [et al.].
Contributors: Montana. Department of Highways; United States. Federal Highway Administration
Publisher: Montana Department of Highways
Published: 1977
Place of publication: Helena, Mt
Language: eng
Number of pages: 45
Subjects: Asphalt cement; Testing; Liquid chromatography; Asphalt tests; Chemical composition; Pendulum tests
Description: The chemical composition of asphalt cement will determine its quality, which in turn will ultimately influence the performance of bituminous roadways. This investigation was conducted to determine if the chemical composition of asphalts as measured by high pressure liquid chromatography (HPLC) could be used to determine the significant differences between asphalts from good and bad roads. If so, perhaps this method could be used in a predictive manner for improved asphalt specification requirements. HPLC analysis of asphalt cements from roadways which varied in quality from good to bad showed highly significant differences. Using these differences, these roadways were classified into good, fair, poor and bad. Coupling these data with the relative amounts of asphalt sub-fractions and physical tests such as penetration at 77 deg. F and ductility at 40 degree F, a reasonable explanation for why a given roadway had reduced performance was established. Using HPLC analysis and sub-fraction quantities, a qualified prediction on the asplalt quality used in two newly constructed roadways has been advanced.
Notes: At head of title: Report no. FHWA-MT-7929.

Cover title.

"December 1977."

Includes bibliographical references (leaf 38).
Table of contents: title: Disclaimer statement; title: Abstract; title: Introduction; title: Discussion of the HPLC method; title: Analysis of various asphalts; title: Established roads - 100/120 penetration design; title: Established roads - 120/150 penetration design; title: Established roads - 150/200 penetration design; title: New roads - 120/150 penetration design; title: Effects of the hot mixing process on asphalt; title: Experimental; title: Isolation of asphalt cement; title: Fractionation of asphalt cement; title: HPLC analysis of asphalt cement; title: Materials; title: Conclusions; title: Implementation; title: References; title: Appendix.