Crack initiation in asphalt mixtures under external compressive loads

Yuqing Zhang*, Xue Luo, Rong Luo, Robert L. Lytton

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Crack initiation was studied for asphalt mixtures under external compressive loads. High tensile localized stresses e direction of the external loads. A quantitative crack initiation criterion the edges of compressed air voids lead to the growth of wing cracks in thon was derived using pseudostrain energy balance principle. Bond energy is determined and it increases with aging and loading rate while decreases with temperature. Cohesive and adhesive cracking occur simultaneously and a method was proposed to determine the individual percentage. The crack initiation criterion is simplified and validated through comparing the predicted and measured compressive strength of the asphalt mixtures.

Original languageEnglish
Pages (from-to)94-103
Number of pages10
JournalConstruction and Building Materials
Volume72
Early online date27 Sep 2014
DOIs
Publication statusPublished - 15 Dec 2014

Bibliographical note

© 2014, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Keywords

  • asphalt mixtures
  • bond energy
  • compressive loads
  • compressive strength
  • crack initiation
  • pseudostrain energy

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