Journal
CEMENT AND CONCRETE RESEARCH
Volume 40, Issue 6, Pages 956-965Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cemconres.2010.02.004
Keywords
Concrete; Fiber reinforced concrete (FRC); Constitutive relationship; Cohesive fracture; Fracture energy
Funding
- National Science Foundation (NSF) [0800805]
- Center of Excellence for Airport Technology (CEAT)
- O'Hare Modernization Program (OMP)
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [0800805] Funding Source: National Science Foundation
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A simple, effective, and practical constitutive model for cohesive fracture of fiber reinforced concrete is proposed by differentiating the aggregate bridging zone and the fiber bridging zone The aggregate bridging zone is related to the total fracture energy of plain concrete, while the fiber bridging zone is associated with the difference between the total fracture energy of fiber reinforced concrete and the total fracture energy of plain concrete The cohesive fracture model is defined by experimental fracture parameters, which are obtained through three-point bending and split tensile tests As expected, the model describes fracture behavior of plain concrete beams In addition, It predicts the fracture behavior of either fiber reinforced concrete beams or a combination of plain and fiber reinforced concrete functionally layered in a single beam specimen The validated model is also applied to investigate continuously, functionally graded fiber reinforced concrete composites (C) 2010 Elsevier Ltd All rights reserved.
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