SEISMIC PERFORMANCE OF HYBRID FIBER REINFORCED CONCRETE COLUMN
Author(s):
Fathima Hameed, Bennet A Ipe
Keywords:
Ductility ratio, Hybrid fiber, Peak lateral load capacity, Seismic performance.
Abstract
The use of two or more types of fibers in a suitable combination may potentially improve the overall properties of concrete and also result in performance concrete. The combining of fibers, often called hybridization, is investigated in this study for a M20 grade concrete. Control and two-fiber hybrid composites were cast using different fiber proportions of steel fiber, glass fiber and polypropylene. An experimental study conducted to analyse the seismic performance of steel, polypropylene and glass hybrid fiber reinforced concrete (HFRC) columns, compared with control specimen with ductile detailing and steel fiber reinforced concrete column subjected to constant axial load and cyclic lateral force were investigated. The failure modes, lateral peak capacity and deformation capacity were analyzed. The experimental results showed that the presence of hybrid fibers in RC columns had positive influence on improving the seismic bearing capacity .Moreover, in comparison to RC columns, HFRC columns exhibited a notable synergetic effect in terms of ductility. A load magnitude of 100 kN was used to apply constant axial compressive load through steel rollers placed with the support of steel plates in between the jack and column. A steel reaction frame was used to providing lateral load to the specimen. The result obtained after the specimen tested at 28 days of curing such that the peak lateral load capacity of test specimen increased by 40% compare to control specimen and ductility ratio increased by 33 % compare to control specimen.
Article Details
Unique Paper ID: 143916

Publication Volume & Issue: Volume 3, Issue 4

Page(s): 85 - 92
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Last Date 25 June 2020


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