Journals Information
Civil Engineering and Architecture Vol. 12(4), pp. 2772 - 2786
DOI: 10.13189/cea.2024.120420
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CFRP Wrapped Concrete Cylinder to Compressive Strength under A Variation of Concrete Qualities
Phattaraphong Ponsorn *
Division of Civil Engineering, Faculty of Engineering, Bangkokthonburi University, Thailand
ABSTRACT
Strengthening and retrofitting concrete compressive structures by wrapping them with carbon fiber reinforced polymer (CFRP) composite material is currently one of the most effective solutions in civil engineering. The outcome of the solution, increasing compressive capacity, was still found to vary with a number of potential factors, for instance, numbers of wrapped layers, exposure durations and conditions, bonding efficiency of CFRP at concrete surface, shapes, and sizes of the compressive member. Yet, so far, the effect of concrete qualities on the strength increment has to be made known in research, and therefore, it was studied and aimed in this paper. A total of 15 concrete cylinders, grouped into five concrete qualities, were put in order as the first series for the original unwrapped specimens and the second and third for the CFRP-wrapped specimens. An experimental program was set up to measure the compressive strength of concrete cylinders using the rebound hammer test, ultrasonic pulse velocity test, and ultimate compression test. The compressive strength of the concrete cylinder was then compared between the original unwrapped and wrapped with CFRP. From the comparison, the compressive strength of the wrapped concrete cylinder was increased by approximately 2.0 to 2.5 times based on the original unwrapped one. Furthermore, it was observed that the compressive strength increment was in the trend of gradual diminution when the original strength of the concrete was higher. The low to high of the compressive strength of concrete cylinders have shown that the averagely increased strength of the two CFRP-wrapped series dwindled from 2.64 to 1.85 times. The strengthening of the concrete cylinder in axial compressive capacity can be improved by wrapping it with CFRP composite material. It was significantly more effective when the qualities of the concrete were poor.
KEYWORDS
CFRP Wrap, Concrete Cylinder, Concrete Quality, Compressive Strengthening
Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Phattaraphong Ponsorn , "CFRP Wrapped Concrete Cylinder to Compressive Strength under A Variation of Concrete Qualities," Civil Engineering and Architecture, Vol. 12, No. 4, pp. 2772 - 2786, 2024. DOI: 10.13189/cea.2024.120420.
(b). APA Format:
Phattaraphong Ponsorn (2024). CFRP Wrapped Concrete Cylinder to Compressive Strength under A Variation of Concrete Qualities. Civil Engineering and Architecture, 12(4), 2772 - 2786. DOI: 10.13189/cea.2024.120420.