Effects of Asphalt-Aggregate Ratios and Compaction Efforts on Horizontal Aggregate Homogeneity in Asphalt Mixtures

Based on the index of aggregate homogeneity, the effects of asphalt-aggregate ratios and compaction efforts on the horizontal aggregate homogeneity in asphalt mixtures were investigated. Meanwhile, using a two-dimensional indirect tensile test (IDT) model of asphalt mixtures, established by means of a finite element method (FEM), the effects were analyzed from the viewpoint of numerical simulation and the obtained results were verified by an actual IDT. Results show that the horizontal aggregate homogeneity in asphalt mixtures is best with the optimum asphalt-aggregate ratio. With an increase in compaction effort, the horizontal aggregate homogeneity in asphalt mixtures improves, and there is an obvious relationship between variations in IDT mechanical parameters and horizontal aggregate homogeneity in asphalt mixtures. The greater the variation coefficient of mechanical parameters is, the worse the horizontal aggregate homogeneity is, and vice versa.

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 944-956
  • Monograph Title: CICTP 2014: Safe, Smart, and Sustainable Multimodal Transportation Systems

Subject/Index Terms

Filing Info

  • Accession Number: 01532891
  • Record Type: Publication
  • ISBN: 9780784413623
  • Files: TRIS, ASCE
  • Created Date: Jul 2 2014 3:02PM