Concrete filled PVC tube: A review

Abdulla, Nwzad Abduljabar

doi:10.1016/j.conbuildmat.2017.08.156

Cited by 57 publications

(24 citation statements)

References 27 publications

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“…However, knowledge on the use of plastic tubes in construction is scattered and lacks information regarding how to design a concrete confined in a plastic tube [1,2].Un-plasticized polyvinyl chloride (uPVC) is a family of polymers that is made from a chain of a long hydrocarbon and it is the most commonly used polymer families for plumbing purposes. When compared to polyvinyl chloride (PVC), uPVC is strong, stiff, hard, and does not burn by itself [2][3][4][5][6][7][8]. uPVC is resistant to corrosion, abrasion, acids, salts, and bases, which provides the advantage of its use as a structural material in any such environment [1,2].…”

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confidence: 99%

“…When compared to polyvinyl chloride (PVC), uPVC is strong, stiff, hard, and does not burn by itself [2][3][4][5][6][7][8]. uPVC is resistant to corrosion, abrasion, acids, salts, and bases, which provides the advantage of its use as a structural material in any such environment [1,2]. Additionally, polyethylene copolymer coatings have been used to protect the external surface of onshore and offshore pipelines for more than a century [7].…”

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confidence: 99%

“…The durability of uPVC was investigated by dipping the uPVC specimen in acid, alkaline, and organic compounds for a time. The predicted service life shows that uPVC has the potential of retaining its integrity without deterioration for more than 50 years [1,2,[8][9][10]. Experimental investigations regarding damage initiation, stress deterioration, crack initiation and growth, impact tests, bursts, and the tensile and fatigue of PVC have exhibited remarkable performance, in that its service life may extend beyond 100 years [2,[11][12][13][14].…”

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confidence: 99%

“…The predicted service life shows that uPVC has the potential of retaining its integrity without deterioration for more than 50 years [1,2,[8][9][10]. Experimental investigations regarding damage initiation, stress deterioration, crack initiation and growth, impact tests, bursts, and the tensile and fatigue of PVC have exhibited remarkable performance, in that its service life may extend beyond 100 years [2,[11][12][13][14]. In addition, plastic (uPVC) has a lower thermal conductivity of about 0.45% of a steel tube, which makes it a suitable environment to cure core concrete when compared to a steel tube [15,16].Previous research has shown the improved strength and ductility of concrete when laterally confined by uPVC pipes.…”

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confidence: 99%

“…Plastics (Un-plasticized polyvinyl chloride (uPVC) tubes) have the potential to increase the strength, ductility, energy absorption and durability. However, knowledge on the use of plastic tubes in construction is scattered and lacks information regarding how to design a concrete confined in a plastic tube [1,2].…”

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Structural Performance of uPVC Confined Concrete Equivalent Cylinders Under Axial Compression Loads

2019

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There is always a need for more durable, ductile, and robust materials for buildings, bridges, and other infrastructure due to the drawbacks of existing construction materials. Some of the drawbacks are the corrosion of steel, the brittle failure of concrete, and the performance instabilities that are caused when exposed to different environments. Thus, an innovative system is required to improve the performance and retain the integrity of structures in a harsh environment. To alleviate the situation, Un-plasticized polyvinyl chloride (uPVC) tubes are used as a confining material and their performance was experimentally evaluated by testing uPVC confined equivalent cylinders. Accordingly, unconfined and uPVC confined equivalent concrete cylinders for five different concrete classes, four types of uPVC tube sizes, and the aspect ratios of two (h/D = 2) were prepared and tested under axial compression loads. The result shows that the uPVC confinement increased the strength, ductility factor, and energy absorption in between 1.28–2.35, 1.84–15.3, and 11–243 times the unconfined levels, respectively. The confinement performed well for lower concrete classes and higher thickness to diameter ratios (2t/D). The post-peak behavior of the stress-strain curve was affected by the 2t/D ratio and the absolute value of the slope decreased as the 2t/D ratio increased. Additionally, the uPVC tube has shown several advantages, such as acting as a permanent formwork, protecting the concrete from chemical attacks, preventing the segregation of concrete, preventing peeling, and taking off concrete cover, decreasing the cross-section, and resulting in lighter sections. The uPVC confinement provided a remarkable improvement on the strength, ductility, energy absorption, and post-peak behavior of concrete. Therefore, uPVC tubes can be used as confining material for bridge piers, piles, electric poles, and highway signboards, where the fire risk is very small, though additional research is required on fire resistance mechanisms, such as wire-mesh reinforced mortar cover.

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Structural Performance of uPVC Confined Concrete Equivalent Cylinders Under Axial Compression Loads

2019

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Local compressive behavior of joint core reinforced with ring beam for connection of polyvinyl chloride fiber‐reinforced polymer confined concrete column and reinforced concrete beam

Feng

et al. 2020

Structural Concrete

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In this paper, seven specimens were designed to study the influence of the height (h), width (b), and reinforcement ratio (ρ) of ring beam on the failure mode, bearing capacity, deformation, and equivalent stress–strain relation of joint core reinforced with ring beam for connection of polyvinyl chloride fiber‐reinforced polymer confined concrete column and reinforced concrete beam. The experimental results indicated that the crushing of concrete in the joint core dominated the failure of specimens. The ultimate, yield bearing capacity and axial strain decreased with the increase of height, while raised with the improvement of width or reinforcement ratio. The growth of the strains of reinforcement and concrete accelerated with the increment of height, while decelerated with the rise of width or reinforcement ratio. Subsequently, based on the local compression theory, confined concrete theory, and the principle of superposition of multiple confinement, considering the influence coefficient of joint height βh and the enhancement coefficient of stirrups αs, a new formula was proposed to estimate the ultimate bearing capacity of specimens under axial local compression. Then, on the basis of Mander's model, taking the correction parameter η into consideration, a new model of equivalent stress–strain relationship was established. Verification results showed that the models proposed in this research agreed well with the experimental results.

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Experimental investigation on in‐plane lateral stiffness and degree of ductility of composite PVC reinforced concrete walls

Far

Nejadi

Aghayarzadeh

2021

Structural Concrete

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This study investigates the in-plane lateral stiffness and ductility of composite PVC encased concrete walls subject to the lateral loads using pushover tests to determine lateral strength and ductility characteristics of composite PVC encased walls filled with plain concrete, macro-synthetic fiber reinforced concrete (RC), and steel RC. Eighteen concrete wall specimens were cast and subjected to pushover test to determine the load-deflection curves. Based on the capacity curves resulting from the pushover tests, the yield and maximum displacements and subsequently structural ductility and performance factors according to Australian Standard for seismic design of buildings have been determined. The determined parameters as well as the initial and effective lateral stiffness values measured from the load-deflection curves for all three cases were compared and the final findings have been discussed. Based on the outcomes of this study, it has become apparent that the tested composite PVC encased macro-synthetic fiber RC walls can exhibit superior performance in terms of ductility when compared to the unreinforced concrete specimens. In addition, the results indicated that the initial in-plane lateral stiffness values of the tested composite PVC encased macro-synthetic fiber RC walls increased by 25% compared to the tested walls filled with plain concrete. In order to enable structural designers to design composite PVC encased concrete walls, ductility factors for this type of walls have been extracted from the test results for the three mentioned cases and proposed for practical applications. It has been concluded that all the PVC encased concrete walls evaluated in this study can be categorized as fully ductile structures.

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Concrete filled PVC tube: A review

Cited by 57 publications

References 27 publications

Structural Performance of uPVC Confined Concrete Equivalent Cylinders Under Axial Compression Loads

Structural Performance of uPVC Confined Concrete Equivalent Cylinders Under Axial Compression Loads

Local compressive behavior of joint core reinforced with ring beam for connection of polyvinyl chloride fiber‐reinforced polymer confined concrete column and reinforced concrete beam

Experimental investigation on in‐plane lateral stiffness and degree of ductility of composite PVC reinforced concrete walls

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