TY - JOUR
T1 - Cohesive fracture model for functionally graded fiber reinforced concrete
AU - Park, Kyoungsoo
AU - Paulino, Glaucio H.
AU - Roesler, Jeffery
N1 - Funding Information:
The authors would like to acknowledge support from the National Science Foundation (NSF) through grant CMMI # 0800805 . We also acknowledge support through the Center of Excellence for Airport Technology (CEAT) provided by the O'Hare Modernization Program (OMP) and the City of Chicago for their financial support in this study. The information presented in this paper is the sole opinion of the authors and does not necessarily reflect the views of the sponsoring agencies.
PY - 2010/6
Y1 - 2010/6
N2 - 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.
AB - 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.
KW - Cohesive fracture (C)
KW - Concrete (E)
KW - Constitutive relationship (C)
KW - Fiber reinforced concrete (FRC) (E)
KW - Fracture energy (C)
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U2 - 10.1016/j.cemconres.2010.02.004
DO - 10.1016/j.cemconres.2010.02.004
M3 - Article
AN - SCOPUS:77950627631
SN - 0008-8846
VL - 40
SP - 956
EP - 965
JO - Cement and Concrete Research
JF - Cement and Concrete Research
IS - 6
ER -