Performance of polypropylene fiber reinforced concrete-filled UPVC tube columns under axial compression

Askari, Shahram Mohammad; Khaloo, Alireza; Borhani, M.; Masoule, Mohammad Sadegh Tale

doi:10.1016/j.conbuildmat.2019.117049

Cited by 33 publications

(15 citation statements)

References 21 publications

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“…leading to strength and durability enhancement. [5][6][7][8][9][10] Howbeit relatively low rupture strain of FRP sheets imposes an abrupt failure on FRP-confined structures especially to those under compression.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation on the performance of GFRP-confined expansive concrete-filled unplasticized polyvinyl chloride tubes

Khaloo

Borhani

Habibi

et al. 2023

Journal of Thermoplastic Composite Materials

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This paper describes both an experimental study and a numerical investigation on the compressive behavior of new types of solid as well as hollow composite columns, which consist of Unplasticized Polyvinyl Chloride (UPVC) tubes filled with expansive concrete. 32 specimens were categorized into four groups and cast with expansive concrete. Half of the specimens were confined additionally with two layers of GFRP wraps. Furthermore, two specimens were cast with ordinary concrete to be compared with those expansive counterparts. All the composite columns were tested under the monotonic compressive loading. The effects of GFRP confinement, aspect ratio of composite columns ( L/ D), and hollowness of concrete core on compressive behavior were investigated. It was demonstrated that adding expansive agents improved the load-carrying capacity and ductility of columns by enhancing the tri-axial state of stress in the concrete core. Moreover, an increase in aspect ratio decreased both peak load and its corresponding axial strain. Approximately 40% increase was observed in the values of peak load for specimens confined with GFRP wraps. Generally, concrete core removal in the hollow specimens resulted in slightly higher average compressive stress. Finally, a finite element (FE) simulation was performed using ABAQUS software, and the numerical results were validated with experimental tests of the present study.

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Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation on the performance of GFRP-confined expansive concrete-filled unplasticized polyvinyl chloride tubes

Khaloo

Borhani

Habibi

et al. 2023

Journal of Thermoplastic Composite Materials

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“…Oyawa et al [31] showed a significant increase in the compressive strength of concrete columns confined with UPVC tubes compared to unconfined ones. Askari et al [32] investigated the performance of reinforced concrete columns with polypropylene fibers confined with UPVC tubes. The results showed that the confinement of UPVC tubes improved the loading-bearing capacity and ductility of the concrete columns.…”

Section: Introductionmentioning

confidence: 99%

Study of Behaviour of Short Concrete Columns Confined with PVC Tube under Uniaxial Load

et al. 2022

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An experimental investigation has been carried out to evaluate the effectiveness of Polyvinyl chloride (PVC) confinements in short plain circular concrete columns. The experimental part is conducted using different tube diameters (110, 160, 220, and 250 mm) with two types of confinement strategies (fully and confined with the cut ends). The results are validated with unconfined samples (control samples). The test results showed that using external confinement of concrete columns by PVC tubes enhances the ultimate load capacity of the short columns. For fully confined samples, the enhancement ratio ranges between 5% and 8.3%, and from 4.16% to 15% for samples with cut ends. Furthermore, the confining of PVC pipes with the cut ends has a more considerable effect on load capacity for all diameters except the ones with 250 mm, where the samples with full confinement ( carried a bigger load than those with cutting ends. Finally, a numerical simulation of samples is carried out by the finite element model using the software. For all scenarios, the results of the numerical analysis showed considerable similarity to the experimental results, with of 0.95 indicating the high linearity between the actual and simulated compressive strength values. Moreover, the induces fewer simulated errors with a relative error ranging from 0.16% to 6% for all scenarios.

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Section: Introductionmentioning

confidence: 99%

“…Askari et al [12] studied the UPVC columns reinforced with polypropylene fiber, they found that the fibers increase the strength of columns. Gholampour and Ozbakkaloglu [12] presented an experimental and analytical study for the behavior of confined steel fiberreinforced concrete. Lu et al [13] study the effect of polypropylene-steel fiber on the axial loading behavior of CFST, the result shown that the hybrid fiber has negligible effect on the ultimate capacity and failure mode.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Performance of Fiber Concrete-filled Tube Columns under Axial Loading

Mohammed

Khalaf

Mohammedali

et al. 2019

IJE

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There have been great developments in the area of civil engineering in the recent few decades and among these, construction and material innovation are quite prominent. Steel-concrete composite construction has emerged as one of the fastest methods of construction. Even though considerable research efforts on conventional reinforced concrete columns have been executed prior to now, concrete filled steel tube (CFST) composite columns however have received limited attention. This work aims to study the experimental behavior of steel tubular specimens. Plastic and steel specimens are considered with circular and square sections filled with the concrete with the steel fiber and as well, plain concrete. Four parameters are considered in this study which are sectional designs (circular and square), tube thickness (2 and 5 mm), tube material (plastic and steel) and content of steel fiber (0 and 5%). Ten concrete filled steel tubular columns were cast and tested. Two circular columns were made from plastic and the other made from steel. The main purpose of this work are study the effect of steel fiber and cross section on the ultimate load capacity of columns. It was discovered the utilization of steel fiber reinforced concrete filled steel tubular columns have comparatively substantial stiffness in comparison with plain concrete filled columns.

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Performance of polypropylene fiber reinforced concrete-filled UPVC tube columns under axial compression

Cited by 33 publications

References 21 publications

Experimental and numerical investigation on the performance of GFRP-confined expansive concrete-filled unplasticized polyvinyl chloride tubes

Experimental and numerical investigation on the performance of GFRP-confined expansive concrete-filled unplasticized polyvinyl chloride tubes

Study of Behaviour of Short Concrete Columns Confined with PVC Tube under Uniaxial Load

Experimental Study on Performance of Fiber Concrete-filled Tube Columns under Axial Loading

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