Experimental studies on the behavior of concrete-filled uPVC tubular columns under axial compression loads
The behavior of concrete-filled uPVC tubular columns under axial compression loads were studied experimentally by testing columns prepared from five different concrete strength classes. Accordingly, the unconfined, concrete-filled uPVC tube with and without wire-mesh reinforced mortar cover and rein...
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Online Access: | http://dx.doi.org/10.1080/23311916.2020.1768649 |
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doaj-15de3aa84e144c3a8106b776536443182021-06-21T13:17:39ZengTaylor & Francis GroupCogent Engineering2331-19162020-01-017110.1080/23311916.2020.17686491768649Experimental studies on the behavior of concrete-filled uPVC tubular columns under axial compression loadsAbraham Mengesha Woldemariam0Walter O. Oyawa1Timothy Nyomboi2Pan African University Institute for Basic Sciences, Technology and Innovation (PAUSTI), JKUATJomo Kenyatta University of Agriculture and Technology (JKUAT), PAUSTI & CUEPAUIST and Kenya Urban Roads AuthorityThe behavior of concrete-filled uPVC tubular columns under axial compression loads were studied experimentally by testing columns prepared from five different concrete strength classes. Accordingly, the unconfined, concrete-filled uPVC tube with and without wire-mesh reinforced mortar cover and reinforced concrete columns were evaluated. The main variables considered in this study are concrete strength$$ ({f_{co}})$$, uPVC thickness to diameter ratio (2t/D) and aspect ratio (h/D). The effect of uPVC confinement on strength, ductility, energy absorption, and post-peak behavior was explored. Also, a model was developed to predict the peak strength. Results show that the uPVC confinement increased the strength, ductility, and energy absorption in between 1.28–2.35, 1.84–15.3, and 11–243 times the unconfined, respectively. The confinement performed well on increasing the strength, ductility, and energy absorption for lower concrete strength and higher 2t/D ratios. The post-peak behavior of the stress-strain curve was affected by 2t/D and h/D ratios; an abrupt drop in the stress-strain curve was observed in specimens with lower 2t/D and higher h/D ratio. For a given value of concrete strength $$({f_{co}})$$, tensile strength$$ \left({{f_y}} \right)$$, thickness (t), diameter (D), and height (h), the stress-strain model predicted the peak strength of axially loaded concrete-filled uPVC tube column with a mean absolute error of 2.7%.http://dx.doi.org/10.1080/23311916.2020.1768649confinementductilityenergy absorptionstrengthstress-strainupvc-confined concrete |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Abraham Mengesha Woldemariam Walter O. Oyawa Timothy Nyomboi |
spellingShingle |
Abraham Mengesha Woldemariam Walter O. Oyawa Timothy Nyomboi Experimental studies on the behavior of concrete-filled uPVC tubular columns under axial compression loads Cogent Engineering confinement ductility energy absorption strength stress-strain upvc-confined concrete |
author_facet |
Abraham Mengesha Woldemariam Walter O. Oyawa Timothy Nyomboi |
author_sort |
Abraham Mengesha Woldemariam |
title |
Experimental studies on the behavior of concrete-filled uPVC tubular columns under axial compression loads |
title_short |
Experimental studies on the behavior of concrete-filled uPVC tubular columns under axial compression loads |
title_full |
Experimental studies on the behavior of concrete-filled uPVC tubular columns under axial compression loads |
title_fullStr |
Experimental studies on the behavior of concrete-filled uPVC tubular columns under axial compression loads |
title_full_unstemmed |
Experimental studies on the behavior of concrete-filled uPVC tubular columns under axial compression loads |
title_sort |
experimental studies on the behavior of concrete-filled upvc tubular columns under axial compression loads |
publisher |
Taylor & Francis Group |
series |
Cogent Engineering |
issn |
2331-1916 |
publishDate |
2020-01-01 |
description |
The behavior of concrete-filled uPVC tubular columns under axial compression loads were studied experimentally by testing columns prepared from five different concrete strength classes. Accordingly, the unconfined, concrete-filled uPVC tube with and without wire-mesh reinforced mortar cover and reinforced concrete columns were evaluated. The main variables considered in this study are concrete strength$$ ({f_{co}})$$, uPVC thickness to diameter ratio (2t/D) and aspect ratio (h/D). The effect of uPVC confinement on strength, ductility, energy absorption, and post-peak behavior was explored. Also, a model was developed to predict the peak strength. Results show that the uPVC confinement increased the strength, ductility, and energy absorption in between 1.28–2.35, 1.84–15.3, and 11–243 times the unconfined, respectively. The confinement performed well on increasing the strength, ductility, and energy absorption for lower concrete strength and higher 2t/D ratios. The post-peak behavior of the stress-strain curve was affected by 2t/D and h/D ratios; an abrupt drop in the stress-strain curve was observed in specimens with lower 2t/D and higher h/D ratio. For a given value of concrete strength $$({f_{co}})$$, tensile strength$$ \left({{f_y}} \right)$$, thickness (t), diameter (D), and height (h), the stress-strain model predicted the peak strength of axially loaded concrete-filled uPVC tube column with a mean absolute error of 2.7%. |
topic |
confinement ductility energy absorption strength stress-strain upvc-confined concrete |
url |
http://dx.doi.org/10.1080/23311916.2020.1768649 |
work_keys_str_mv |
AT abrahammengeshawoldemariam experimentalstudiesonthebehaviorofconcretefilledupvctubularcolumnsunderaxialcompressionloads AT walterooyawa experimentalstudiesonthebehaviorofconcretefilledupvctubularcolumnsunderaxialcompressionloads AT timothynyomboi experimentalstudiesonthebehaviorofconcretefilledupvctubularcolumnsunderaxialcompressionloads |
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1721367705394610176 |