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Seismic Performance of Fiber Reinforced Cement Composite (FRCC) Hollow Columns

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Title
Seismic Performance of Fiber Reinforced Cement Composite (FRCC) Hollow Columns
Author
Choi, Yoon Young
Advisor
Shin, Myoungsu
Keywords
Fiber reinforced cement composites; Hollow columns; Seismic performance
Issue Date
2013-02
Publisher
Graduate School of UNIST
Abstract
Presented is an experimental investigation aimed at evaluating the use of fiber-reinforced cement composites (FRCCs) for improving the seismic behavior of hollow bridge columns. Five ¼-scale rectangular hollow columns were tested under quasi-static lateral cyclic loading. No web reinforcement was provided to identify the sole contribution of FRCC on the shear performance. The main test variables included steel fiber volumetric ratio (1% or 2%), column length-to-depth ratio (2 or 3), and the presence of coarse aggregates. All FRCC specimens underwent significant flexural yielding ultimately followed by shear failure. The specimen with the higher fiber ratio generally achieved the larger displacement ductility, and also showed the better energy dissipation capacity. For the specimens with 1% fiber ratio, the specimen with coarse aggregates exhibited slightly better performance than the one without coarse aggregates, which implies that the use of 1% fiber ratio did not guarantee the strain-hardening behavior even with the exclusion of coarse aggregates.
Description
Urban Infrastructural Systems and Engineering
URI
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