期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 187, 期 -, 页码 865-875出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2018.06.210
关键词
Microwave healing of asphalt mixture; Flake graphite; Exfoliated graphite nanoplatelet; Fracture energy; Disk-shaped compact tensile test; Cohesive fracture simulation
资金
- Michigan Tech Research Excellence Fund program
- China Scholarship Council [201406370141]
- Graduate School of Michigan Technological University
This paper computationally and experimentally investigated the microwave healing performance of graphite (flake graphite and exfoliated graphite nanoplatelet (xGNP)) modified asphalt mixture. The original fracture energy and strength were first measured for the modified asphalt mixture through the disk shaped compact tension test. Then the micro-wave healing performance (recovered fracture energy and strength) were further examined. All these were enhanced with the added carbon materials. The recovered fracture strengths were also compared with FE cohesive zone model (CZM) simulation with digital image correlation (DIC) calibrated parameters. The predicted recovered fracture strength had good agreement with the experimental measurement. (C) 2018 Elsevier Ltd. All rights reserved.
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