Behavior of synthetic fiber-reinforced concrete circular columns under cyclic flexure and constant axial load. Osorio, L., Eid, R., Paultre, P., & Proulx, J. In volume 4, pages 2390 - 2399, Quebec City, QC, Canada, 2008. Concrete design codes;Earthquake loadings;Energy absorption ability;High-energy absorption;Lateral reinforcement;Normal strength concretes;Post-peak behaviors;Steel reinforcements;abstract bibtex Ductile behavior and high energy absorption ability are two essential properties to be achieved by a concrete column, especially when it is part of a structure placed in a moderate/high seismic region. Concrete design codes ensure ductile behavior of columns by setting a requirement for a minimum amount of transverse steel reinforcement. Studies have shown, however, that the use of fiber-reinforced concrete (FRC) can enhance the post-peak behavior and hence, the ductility and the energy absorption ability of concrete columns subjected to axial loading. Therefore, the inclusion of discrete short fibers into the concrete mixture combined with a reduced amount of lateral reinforcement can be an alternative to the conventional lateral reinforcement required by the codes. Moreover, the higher resistance to crack growth and the excellent durability of FRC over non-fibrous concrete can result in higher cost-effective value. In this regard, tests on large-scale circular synthetic fiber-reinforced concrete (SNFRC) columns subjected to a combined constant axial load and reversed cyclic flexure simulating earthquake loading were carried out. The aim of this test program was to examine the influence of the addition of synthetic fibers to the concrete mixture on the behavior of normal-strength concrete (NSC) columns. The results show that in terms of ductility and energy dissipation, the behavior of the SNFRC columns is improved compared to the NSC columns. Also they show that higher is the lateral reinforcement amount lower is the influence of the fibers on the column's behavior. Based on the test results, the reduction of the confinement steel reinforcement amount required by the concrete design codes appears to be possible when SNFRC is used.
@inproceedings{20091412006468 ,
language = {English},
copyright = {Compilation and indexing terms, Copyright 2023 Elsevier Inc.},
copyright = {Compendex},
title = {Behavior of synthetic fiber-reinforced concrete circular columns under cyclic flexure and constant axial load},
journal = {Proceedings, Annual Conference - Canadian Society for Civil Engineering},
author = {Osorio, L.I. and Eid, R. and Paultre, P. and Proulx, J.},
volume = {4},
year = {2008},
pages = {2390 - 2399},
address = {Quebec City, QC, Canada},
abstract = {Ductile behavior and high energy absorption ability are two essential properties to be achieved by a concrete column, especially when it is part of a structure placed in a moderate/high seismic region. Concrete design codes ensure ductile behavior of columns by setting a requirement for a minimum amount of transverse steel reinforcement. Studies have shown, however, that the use of fiber-reinforced concrete (FRC) can enhance the post-peak behavior and hence, the ductility and the energy absorption ability of concrete columns subjected to axial loading. Therefore, the inclusion of discrete short fibers into the concrete mixture combined with a reduced amount of lateral reinforcement can be an alternative to the conventional lateral reinforcement required by the codes. Moreover, the higher resistance to crack growth and the excellent durability of FRC over non-fibrous concrete can result in higher cost-effective value. In this regard, tests on large-scale circular synthetic fiber-reinforced concrete (SNFRC) columns subjected to a combined constant axial load and reversed cyclic flexure simulating earthquake loading were carried out. The aim of this test program was to examine the influence of the addition of synthetic fibers to the concrete mixture on the behavior of normal-strength concrete (NSC) columns. The results show that in terms of ductility and energy dissipation, the behavior of the SNFRC columns is improved compared to the NSC columns. Also they show that higher is the lateral reinforcement amount lower is the influence of the fibers on the column's behavior. Based on the test results, the reduction of the confinement steel reinforcement amount required by the concrete design codes appears to be possible when SNFRC is used.<br/>},
key = {Concrete mixtures},
keywords = {Ductility;Energy dissipation;Cost effectiveness;Software testing;Mixtures;Energy absorption;Fiber reinforced materials;Axial loads;Codes (symbols);Concrete construction;Reinforced concrete;},
note = {Concrete design codes;Earthquake loadings;Energy absorption ability;High-energy absorption;Lateral reinforcement;Normal strength concretes;Post-peak behaviors;Steel reinforcements;},
}
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