Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 65, Issue -, Pages 232-242Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2014.04.119
Keywords
Asphalt mixture; Heterogeneity; Three-point bending; Fracture; Cohesive elements
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Funding
- National Natural Science Foundation of China [10872073]
- National Basic Research Program of China (973 Program) [2011CB013800]
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The random aggregate generation and packing algorithm is employed to model pre-cracked three-point bending beams of asphalt mixture which is treated as a two-phase material comprising randomly distributed coarse aggregates and asphalt mastic, and the cohesive elements are inserted inside mastic and into aggregate-mastic interfaces to simulate crack initiation and propagation. The mode I and mixed mode cracking behaviors are simulated through changing the beam location in the loading setup. The predicted results compare very well with the experimental ones, and then the influences of crack location and coarse aggregate distribution on cracking behavior are evaluated. (C) 2014 Elsevier Ltd. All rights reserved.
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