Mechanical behavior of ultra-high toughness cementitious composite strengthened with Fiber Reinforced Polymer grid

Zheng, Yuzhou; Wang, Wenwei; Mosalam, Khalid M.; Zhang, Zhu

doi:10.1016/j.compstruct.2017.09.073

Cited by 61 publications

(27 citation statements)

References 27 publications

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“…Engineered cementitious composites (ECCs), also known as ultra-high toughness cementitious composites (UHTCCs), are a class of high-performance fiber-reinforced cementitious composites (HPFRCCs). Owing to the addition of fibers, ECCs can exhibit a large tensile strain capacity ranging from 3% to 8%, with the advantages of high fracture toughness, high tensile strength, high cracking resistance and superior durability [69][70][71][72][73][74][75][76][77][78][79][80]. As the bond strength between ECC and normal concrete is satisfactory [77], ECC can be filled in the gap between the old column and the FRP wrap to form a curvilinearized section when strengthening/repairing existing square/rectangular columns to further enhance the compression and bending load carrying capacities of the columns.…”

Section: Corner Roundingmentioning

confidence: 99%

Fiber-Reinforced Polymer-Confined Non-Circular Columns with Shape Modification: A Comprehensive Review

Zeng

2022

Polymers

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The implementation of shape modification (SM) to reinforced concrete (RC) columns has been demonstrated to be effective when enhancing the effectiveness of the fiber-reinforced polymer (FRP) confinement of the columns, particularly for non-circular columns. The SM approach generally includes modifying a square section into a circular one, modifying a rectangular section into an elliptical/oval one and modifying a square/rectangular section into a curvilinearized square/rectangular section. In this paper, a state-of-the-art review of studies on FRP-confined non-circular columns with SM is conducted. The effects of key parameters on the effectiveness of FRP confinement are discussed, and different methods for the implementation of SM in real applications are briefly introduced. The findings of the review further confirm the effectiveness of the SM approach, and the test results demonstrate the effectiveness and advantages of section curvilinearization with a limited increase in cross-sectional area. Additionally, existing theoretical models for FRP-confined concrete in columns with SM are summarized. Further research opportunities associated with FRP-confined non-circular columns with SM are identified.

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Section: Corner Roundingmentioning

confidence: 99%

Fiber-Reinforced Polymer-Confined Non-Circular Columns with Shape Modification: A Comprehensive Review

Zeng

2022

Polymers

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“…By implementing FRP reinforcement in cementitious composites, the tensile properties of cementitious composites can be substantially enhanced, and the fiber content used in cementitious composites can be reduced. The most widely studied cementitious composite is ECC [ 61 , 62 , 63 , 64 , 65 , 66 , 67 ]. Al-Gemeel and Zhuge [ 52 , 58 ] investigated compressive behavior of circular and square columns strengthened with basalt fiber grid-reinforced ECC mortar.…”

Section: Introductionmentioning

confidence: 99%

Compressive Behavior of FRP Grid-Reinforced UHPC Tubular Columns

Zeng

Long

2021

Polymers

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In this study, a novel form of tubular columns that is made of ultra-high-performance concrete (UHPC) internally reinforced with fiber-reinforced polymer (FRP) grid (herein referred to as FRP grid-UHPCtubular column) was developed. The axial compression test results of FRP grid-UHPC tubular columns with and without in-filled concrete are presented and discussed. Effects of the number of the FRP grid-reinforcing cages, the presence of in-filled concrete, and the presence of external FRP confinement were investigated. The test results confirmed that the FRP-UHPC tubular columns have a satisfactory compressive strength, and the strength and ductility of FRP-confined concrete-filled FRP grid-UHPC tube columns are enhanced due to the confinement from the FRP wrap. The proposed FRP grid-reinforced UHPC composite tubes are attractive in structural applications as pipelines or permanent formworks for columns, as well as external jackets (can be prefabricated in the form of two halves of tubes) for strengthening deteriorated reinforced concrete columns.

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“…Today, composite materials are frequently used from aerospace and aviation industries to everyday household goods. The frequency of these uses has led to increased work on fiberreinforced polymer composites [2][3][4]. One of these work areas is the changes in the mechanical properties of composites exposed to different strain rates [5].…”

Section: Introductionmentioning

confidence: 99%

Cam Fiber Takviyeli Epoksi Kompozitleri Farklı Yükleme Hızlarında Eğilme Özellikleri

Demircan¹,

Özen²,

Kısa³

2020

Deu Muhendislik Fakultesi Fen Ve Muhendislik

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Composite materials are exposed to various loading speeds when considering the application areas. Understanding how strain rates affect the behavior of composite materials and estimating this behavior constitute one of the important work areas. In this work, glass fiber reinforced epoxy composites were produced and their mechanical behaviour under various strain rates (2.5 mm/min, 5 mm/min and 10 mm/min) was investigated. Strain rates was based on crosshead speed. Composite plates were produced by VARIM (Vacuum Assisted Resin Infusion Method). The samples were cut according to ASTM standards and then three-point bending test was applied to understand flexural behaviour of glass fiber reinforced epoxy composites. Composite plates were prepared as three different fiber orientations (0°, 45°, 90°) and the effect of different strain rates on different fiber orientations was investigated. As a result, as strain rate increases, the flexural stress increases and there is no meaningful change in the modulus of elasticity and deflection. In addition, the most affected fiber orientation is 45° fiber orientation for flexural stress.

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Mechanical behavior of ultra-high toughness cementitious composite strengthened with Fiber Reinforced Polymer grid

Cited by 61 publications

References 27 publications

Fiber-Reinforced Polymer-Confined Non-Circular Columns with Shape Modification: A Comprehensive Review

Fiber-Reinforced Polymer-Confined Non-Circular Columns with Shape Modification: A Comprehensive Review

Compressive Behavior of FRP Grid-Reinforced UHPC Tubular Columns

Cam Fiber Takviyeli Epoksi Kompozitleri Farklı Yükleme Hızlarında Eğilme Özellikleri

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