Behavior of Reinforced Concrete Columns Wrapped by CFRP Under Eccentric and Concentric Loading
K. Ganesh1, I. Siva Kishore2, K. Shyam Chamberlin3, K. J Brahma Chari4
1K. Ganesh, P.G. Student, Department of Civil Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur (Andhra Pradesh), India.
2K. Shyam Chamberlin, Assistant Professor, Department of Civil Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur (Andhra Pradesh), India.
3I. Siva Kishore, Assistant Professor, Department of Civil Engineering, Koneru Lakshmaiah Educational Foundation, Vaddeswaram, Guntur (Andhra Pradesh), India.
4K. J. Brahmachari, Assistant Priofessor, Civil Engineering, Koneru Lakshmaiah Educational Foundation, Vaddeswaram (Andhra Pradesh), India.
Manuscript received on 03 May 2019 | Revised Manuscript received on 15 May 2019 | Manuscript Published on 28 May 2019 | PP: 513-518 | Volume-7 Issue-6C2 April 2019 | Retrieval Number: F10920476C219/2019©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In this era of modern science and technology, the architectural science also took a new leap into show case the avant-garde architectural marvels of the architectural experts that pose never ending challenges to the structural engineers and designers. The design engineers have to deal with new member geometrics, member materials and all possible matrix of such combinations of materials, geometrics and design methods to meet the needs of modern man and architecture. In this work, performance of a column of compound material (concrete and steel, RCC, CFRP) as a flexural column is studied with an eccentric and concentric loading and possible ways of improving the flexural (eccentrically loaded) column performance by using carbon fiber reinforced polymer is studied. In a conventional RCC column, the compressive load is sustained by both concrete and steel, the flexural and tensile loads are sustained by steel alone but different geometric shapes of the structural members have shown different flexural and tensile load sustaining capabilities due to shape and eccentricity effect. To overcome / minimize this limiting performance of a column as a flexural member, the CFRP is introduced in layers around the columns. The experiment is carried out on three groups of total of (6) columns. Each group consists of (2) columns, group-1 consists of (2) RCC columns without CFRP fabric, group-2 consists of (2) columns with confinement by CFRP fabric of one layer and group-3 comprises of (2) columns with confinement by CFRP fabric of two layers. Columns are tested under uniaxial eccentric and concentric loading, the results shows that the performance of the RCC columns, as a flexural column, wrapped by CFRP fabric has increased considerably and sustained the additional loads compared to unwrapped RC columns even on eccentric loading.
Keywords: RC Columns, CFRP Fabric, Wrapping, Eccentric Loading, Uniaxial.
Scope of the Article: Properties and Mechanics of Concrete