Experimental Study of High-Strength Concrete Columns Confined with Different Types of Mesh under Eccentric and Concentric Loads

Hadi, Muhammad N.S.; Hua, Zhao

doi:10.1061/(asce)mt.1943-5533.0000234

Cited by 38 publications

(9 citation statements)

References 17 publications

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“…Fiber glass fly mesh improved the ductility of the columns. 23,24 Specimens showed a tensile strength of up to 1000 MPa but no improvement in load-carrying capacity could be achieved. Reinforcing high strength concrete columns with glass fiber fly mesh was also suggested to be suitable to avoid/reduce spalling.…”

Section: Glass Fiber-reinforced Concretementioning

confidence: 97%

A review of fibrous reinforcements of concrete

Anandamurthy¹,

Guna

Ilangovan³

et al. 2017

Journal of Reinforced Plastics and Composites

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Fibrous reinforcements, specifically those derived from agricultural sources, instead of steel make concrete more sustainable and provide unique properties to structures. Organic, inorganic and metallic fibers have been extensively studied as reinforcement and as aggregates for concrete. Steel, glass and carbon in fibrous forms have been used as reinforcement along with concrete or as a separate structure to improve performance or buttress dilapidated structures. Although these traditional materials provide good improvement in properties, they are derived from non-renewable and unsustainable sources. Recent focus has been to use renewable and sustainable materials in concrete instead of the traditional materials such as glass, carbon and steel. A plethora of fibers and fibrous materials, especially those derived from agricultural residues, have the potential to be used in concrete and make concrete structure more sustainable and environmentally friendly. In addition to the different types of fibers, various forms of the same fibers have also been used as reinforcement. Fibers, fabrics, tubes, rods and other structures have been used as reinforcement. In this review, we summarize the various types of fibers used in concrete and discuss the potential of using biofibers derived from agricultural residues as reinforcement and aggregates in concrete. We have broadly grouped the fibers into eight categories and further divided into sub-groups depending on the form of the reinforcement. Major focus has been to cover literature on natural fibers and agricultural residue-based reinforcements. Advantages of using fibrous materials including increase in performance properties have been reviewed. Limitations of the reinforcements and approaches to overcome the limitations have also been discussed.

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Section: Glass Fiber-reinforced Concretementioning

confidence: 97%

A review of fibrous reinforcements of concrete

Anandamurthy¹,

Guna

Ilangovan³

et al. 2017

Journal of Reinforced Plastics and Composites

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“…However, the perforation may lead to performance degradation of FTRC columns. In this study, the polymer grid has been used to prevent the premature spalling of concrete cover (Hadi and Zhao 2011;Heo et al 2011;Park et al 2015). The construction process of FTRC columns in real application can be similar to that of steel RC columns in which the concrete cover is confined with grid mesh (Heo et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on FRP Tube Reinforced Concrete Columns under Different Loading Conditions

2016

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The behavior of fiber-reinforced polymer (FRP) tube reinforced concrete (FTRC) columns under different loading conditions was investigated in this study. Four groups of 16 specimens were cast and tested. Specimens in the first group (the reference group) were re-inforced with longitudinal steel bars and steel helices (Group REF). Specimens in the second group were reinforced with intact glass FRP tubes (Group IT). Specimens in the third group were also reinforced with intact glass FRP tubes. In addition, polymer grid was embedded into the concrete cover to reduce the cover spalling (Group ITG). Specimens in the fourth group were reinforced with perforated glass FRP tubes (Group PT). One specimen from each group was tested under concentric loading, one under 25-mm eccentric loading, one under 50-mm eccentric loading, and one under four-point loading. Results from the experimental study show that FRP tubes significantly increase the load-carrying capacity and ductility of FTRC specimens. Group ITG specimens performed better than the other groups of specimens. Experimental and analytical interaction (P−M) diagrams also show the enhanced performance of FTRC specimens. diagrams also show the enhanced performance of FTRC specimens.

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“…This approach of constructing axial loadbending moment interaction diagram for FRPs is similar to the axial load-bending moment interaction diagram approach adopted by Yazici and Hadi [48], Hadi and Zhao [49], Hadi and Widiarsa [45] and Hadi et al [46] for different types of FRP confinements for RC members. The peak load corresponds to the maximum value of load resisted by the specimen before the rupture of FRP tube.…”

Section: Experimental Axial Load Bending Moment Interaction Diagramsmentioning

confidence: 97%

Axial and flexural behavior of unreinforced and FRP bar reinforced circular concrete filled FRP tube columns

Hadi

Khan

Sheikh

2016

Construction and Building Materials

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Sheikh, M. Neaz. (2016). Axial and flexural behavior of unreinforced and FRP bar reinforced circular concrete filled FRP tube columns. Construction and Building Materials, 122 (September), 43-53. Axial and flexural behavior of unreinforced and FRP bar reinforced circular concrete filled FRP tube columns AbstractFiber Reinforced Polymer (FRP) composites have emerged as a viable alternative of steel reinforcement due to higher ultimate tensile strength to weight ratio and corrosion resistance of FRP composites. Concrete Filled Fiber Reinforced Polymer Tube (CFFT) technique for new column construction has attracted significant research attention. This paper investigated the axial and flexural behavior of concrete filled Carbon FRP (CFRP) tube columns with and without CFRP bar and concrete filled Glass FRP (GFRP) tube columns with and without GFRP bar. The test results of 16 circular CFFT and four steel Reinforced Concrete (RC) specimens of 203-205 mm diameter and 800-812 mm height have been reported in this paper. The test results showed a larger reduction in the confinement effectiveness of FRP tube than steel helices under increasing applied load eccentricity. FRP bar reinforced CFFT specimens exhibited higher axial loads, flexural loads, and deformations at peak loads than unreinforced CFFT and steel RC specimens. Experimental axial loadbending moment interaction curves of tested specimens also showed the improved performance of FRP bar reinforced CFFT specimens. --------------------------------------------------------

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Experimental Study of High-Strength Concrete Columns Confined with Different Types of Mesh under Eccentric and Concentric Loads

Cited by 38 publications

References 17 publications

A review of fibrous reinforcements of concrete

A review of fibrous reinforcements of concrete

Experimental Study on FRP Tube Reinforced Concrete Columns under Different Loading Conditions

Axial and flexural behavior of unreinforced and FRP bar reinforced circular concrete filled FRP tube columns

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