Study of Concrete Filled Unplasticized Poly-Vinyl Chloride Tubes as Columns under Axial Loading

Manish Sharma (Department of Civil Engineering, Faculty of Engineering and Technology, Jamia Millia Islamia, New Delhi, 110025, India)
Md. Imteyaz Ansari (Department of Civil Engineering, Faculty of Engineering and Technology, Jamia Millia Islamia, New Delhi, 110025, India)
Nazrul Islam (Department of Civil Engineering, Faculty of Engineering and Technology, Jamia Millia Islamia, New Delhi, 110025, India)

Article ID: 4494

Abstract


This article aims to examine the behavior of Unplasticized Poly- Vinyl-Chloride (UPVC) bounded reinforced columns with polypropylene fibers under axial compression. To develop this model, a no samples of concrete filled UPVC pipe (CFUT)  with different geometric properties were tested. To obtain the specimens different class pipes with three different diameters were used to investigate the sensitivity of these columns to various parameters. The effect of each variable on the ultimate strength, ductility and confinement efficiency of the samples was investigated. All specimens were compressed by applying load only to the concrete core to obtain the load-displacement variations and the corresponding deformation mode. A finite element model was developed using the proposed stress-strain variation of confined concrete with UPVC tubes to simulate axial compression of CFUT specimens. According to the results obtained, the effect of the change in diameter-thickness ratio failure stress of concrete limited by (D/t) is obtained and discussed with empirical relationship. Polypropylene fibers were found to slightly increase column strength up to a certain volume fraction, after which the strength generally experienced a decrease.


Keywords


Unplasticized Poly-Vinyl Chloride (UPVC) Tubes;Composite column;Tube Confinement;Column strength

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References


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DOI: https://doi.org/10.30564/jmmmr.v5i1.4494

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Copyright © 2022 Manish Sharma, Md. Imteyaz Ansari, Nazrul Islam


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