rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    non sort: The
    title: effects of asphalt fractional composition on properties
  name:
    name part: Liu, Meng
    name part: 1966-
    role:
      role term: creator
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: xx
    date issued: 1996
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: Chemical Engineering xviii, 256 leaves : illustrations ; 28 cm.
  abstract: Oxidative aging is one of the major causes of asphalt pavement failure. To evaluate the age hardening resistance of asphalts, an aging model has been developed, which identifies the parameters representing performance-related aging properties. The model recognizes the fact that oxidative aging is the combined result of asphalt oxidation which results in carbonyl growth and the deterioration of physical properties caused by the chemical composition change. The kinetic parameters for carbonyl growth were found to be asphalt dependent. For the ten asphalts studied, the reaction activation energies range from 83 kJ/mol to 100 kJ/mol, while the pressure reaction orders range from 0.33 to 0.58. Two other important parameters are the initial jump and the hardening susceptibility. Both of these two parameters were found to be dependent on aging pressure, with the sensitivities being highly asphalt dependent. However, these two parameters are independent of aging temperature. The aging characteristics of Corbett fractions and supercritical fractions were investigated to study the effects of fractional composition on the aging properties of whole asphalts. The kinetic characteristics of an asphalt are determined by the kinetic characteristics of its fractions as well as the interaction between the fractions. The polar aromatics fractions oxidize much more rapidly than the naphthene aromatics fractions. They also have higher hardening susceptibilities and viscosity temperature susceptibilities. The data collected in this study suggest that it may be possible to produce an asphalt binder with superior performance-related properties via supercritical ftactionation. In particular, when one of the light supercritical fractions is aged to a viscosity level of an AC-20 asphalt, the material has a much lower HS value and reactivity than the parent asphalt. Its viscosity temperature susceptibility is a bit smaller than the whole asphalt, and increases less for the same amount of carbo…
  note: by Meng Liu.
  note: Vita.
  note: "Major Subject: Chemical Engineering".
  note: Issued also on microfiche from University Microfilms Inc.
  note: Includes bibliographical references: pages 180-185.
  note: Ph. D. Texas A&M University 1996.
  subject:
    topic: Major chemical engineering
  identifier: 97-01678 UMI
  identifier: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  record info:
    record content source: TXA
    record creation date: 970506
    record change date: 20190325093257.0
    record identifier: in00001353365