Research on New Component Analysis Method for Pyrolytic Crumb Rubber Modified Asphalt

On the basis of the problems in analyzing the components of pyrolytic crumb rubber modified asphalt (PRA) by the current component analysis method, a new method applicable to component analysis of PRA was proposed through material characteristics analysis of PRA and solubility test of rubber hydrocarbon. Components of PRA were divided into petroleum ether soluble fraction, toluene soluble fraction, and insoluble fraction. The matching formulas were put forward and the operation of the experiment was simplified. The new method was used to analyze the components of PRA made by pyrolysis at 250°C for 0 min, 30 min, 60 min, 120 min, 240 min, and 480 min respectively. And the content of maltenes, asphaltenes, and base asphalt in PRA was obtained by the formulas. The pyrolysis mechanism of PRA was well explained by the composition change rules of PRA. The content of base asphalt in PRA increased from 70% to 91.25% at 60 min pyrolysis, and the conversion of the crumb rubber powder to the asphalt was realized.

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 189-196

Subject/Index Terms

Filing Info

  • Accession Number: 01722198
  • Record Type: Publication
  • ISBN: 9780784482513
  • Files: TRIS, ASCE
  • Created Date: Nov 14 2019 9:30AM