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Compressive strength and behaviour of full and partial CFRP confined concrete columns
Muhammad Amir Shafiq Rahamad Ali1, Fariz Aswan Ahmad Zakwan2, Hazrina Ahmad3, Ruqayyah Ismail4, Badrul Nizam Ismail5.
Concrete columns encased in carbon fibre reinforced polymer (CFRP) have
been extensively explored for usage in civil engineering constructions in
recent years. However, the performance of these CFRP concrete systems is
still questionable since CFRP application is relatively costly. The study
focuses on the axial compressive loadings and strength of two different types
of CFRP confinement configurations. Fifteen (15) cylindrical concrete
column samples of 1 m height and 200 mm diameter were fabricated,
including three (3) control samples (without CFRP) and twelve (12) CFRP
cylindrical concrete columns. Two layers of CFRP confinement gave more
additional support and strength to the column’s samples for both full and
partial confinement. Full 2-layers confined columns obtained 65.53% and
partial 2-layers confined columns obtained 48.35% higher than the
unconfined samples (control samples) on average. The load-displacement
and stress-strain results are also discussed in this paper. A full layer of CFRP
gave higher compressive strength in this study but partial CFRP confinement
gave enough strength to the column which was more than 35% higher
compressive strength compared to the control samples on average. The
knowledge in this research field can be used as the basis for future structural
rehabilitation work.
Affiliation:
- Universiti Teknologi MARA Cawangan Pulau Pinang, Malaysia
- Universiti Teknologi MARA Cawangan Pulau Pinang, Malaysia
- Universiti Teknologi MARA Cawangan Pulau Pinang, Malaysia
- Universiti Teknologi MARA Cawangan Pulau Pinang, Malaysia
- Universiti Teknologi MARA Cawangan Pulau Pinang, Malaysia
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