Journal
POLYMERS
Volume 6, Issue 1, Pages 59-75Publisher
MDPI
DOI: 10.3390/polym6010059
Keywords
confined concrete; fiber-reinforced polymer; axial strength; rock mechanics; Mohr-Coulomb; Hoek-Brown; Johnston
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The failure criteria from rock mechanics, Hoek-Brown and Johnston failure criteria, may be extended and modified to assess the ultimate compressive strength of axially loaded circular fiber reinforced polymer (FRP)-confined concrete columns. In addition to the previously modified Hoek-Brown criterion, in this study, the Johnston failure criterion is extended to scope of FRP-confined concrete, verified with the experimental data and compared with the significant relationships from the current literature. Wide-range compressive strengths from 7 to 108 MPa and high confinement ratios up to 2.0 are used to verify the ultimate strengths in short columns. The results are in good agreement with experimental data for all confinement levels and concrete strengths.
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