ISSN: 1945-7553
CODEN: JTEVAB
Published Online: 3 August 2011
Page Count: 5

Evaluation of the Fracture Resistance of Asphalt Mixtures Based on Bilinear Cohesive Zone Model

Zhang, Dong
Southeast Univ.,

Huang, Xiaoming
Southeast Univ.,

Zhao, Yongli
Southeast Univ.,

(Received 23 November 2010; accepted 17 June 2011)

Abstract

The cohesive zone model was employed to study the fracture resistance of asphalt mixtures at low temperature. The bilinear traction-separation curve that directly reflects the magnitudes of the tensile strength, fracture energy, and failure separation of asphalt mixtures was proposed to evaluate the fracture resistance of asphalt mixtures. The fracture resistance of the asphalt mixtures with the nominal maximum aggregate size of 13 mm using different asphalt types and asphalt contents and at different temperatures was evaluated using the proposed method. The results of the study indicate that the proposed method can be used to comprehensively evaluate the fracture resistance of asphalt mixtures.

Keywords:
asphalt mixture, fracture resistance, cohesive zone model, fracture energy, tensile strength, failure separation

Paper ID: JTE103626
DOI: 10.1520/JTE103626
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