Shear Performance Assessment of Sand-Coated GFRP Perforated Connectors Embedded in Concrete

Xiong, Zhi Hua; Liu, Yuqing; Zuo, Yize; Xin, Haohui

doi:10.3390/ma12121906

Cited by 8 publications

(4 citation statements)

References 29 publications

(40 reference statements)

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“…As shown in Figure 8 b–f, the ultimate tensile strengths of the claw connectors at anchorage depths of 3–5 cm were 21.14, 24.33, 25.03, 27.48, and 28.53 kN, respectively. As the anchorage depth increased, the tensile strength of the specimens was improved; however, the overall strength and strength base were relatively small, which is similar to the results of a previous study [ 5 ]. When the anchorage depth increased from 3 to 3.5 cm, the ultimate tensile strength of the specimens had the largest increase.…”

Section: Analysis Of Experimental Resultssupporting

confidence: 88%

“…Jiang et al [ 4 ] evaluated the shear performance of steel-fiber-reinforced polymeric-material joints. Zhihua et al [ 5 ] proposed an empirical formula for predicting the shear strength of glass-fiber-reinforced-plastic (GFRP) open joints through experimental and finite-element parametric analyses. Clay et al [ 6 ] studied the mechanical properties of different materials, such as glass-fiber-composite reinforcement, stainless steel, galvanized steel, basalt-fiber cloth, and carbon-fiber cloth, to quantify their failure modes and shear resistance.…”

Section: Introductionmentioning

confidence: 99%

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Engineering Properties of New Claw Connectors for Alkali-Resistant Glass-Fiber-Reinforced Plastics

Wang

Zhang

Jing³

et al. 2022

Materials

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To optimize the engineering properties of connectors, a new claw-shaped alkali-resistant glass-fiber-composite-reinforced connection member was designed in this study. Tensile, shear, and durability tests were conducted on the joint. Moreover, numerical analysis was performed, and the performance of the proposed connector was verified in engineering applications. Hence, the following conclusions hold: (1) At the same shear diameter and anchorage depth, the anchorage performance and shear resistance of claw connectors are better than those of rod connectors. (2) Claw connectors with an anchorage depth of 3.5 cm and a hollow joint with an outer diameter of 14 mm exhibit an excellent overall performance. (3) Alkali-resistant glass-fiber-reinforced plastics exhibit good durability. (4) The ANSYS numerical model can be used to accurately predict the load–displacement variation law of the pull-out and shear of the connectors. (5) Through research, it has been proven that claw-shaped connectors have good pull-out resistance, shear resistance, and durability, and the structure has good stability in engineering applications. Therefore, the structure can provide a significant reference for similar projects.

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Section: Analysis Of Experimental Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Engineering Properties of New Claw Connectors for Alkali-Resistant Glass-Fiber-Reinforced Plastics

Wang

Zhang

Jing³

et al. 2022

Materials

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“…The bonding anchor system is mainly composed of the bonding medium and sleeve, and the CFRP prestressed tendons or prestressed strands are anchored by chemical adhesive force, friction force and mechanical bite force. Moreover, studies indicated that sand-coated can further improve the bonding performance of FRP [ 20 , 21 ]. Bonded anchor system has good fatigue resistance and is more suitable for the anchorage of CFRP prestressed tendons or prestressed strands.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on Bonded Anchorage of Carbon Fiber Reinforced Polymer Prestressed Strands

Jia¹,

Wang

Tafsirojjaman

2022

Polymers

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Aiming at the problems of a large number of corrosion and fatigue damage of the current prestressed steel strands, this paper adopts carbon fiber-reinforced composite (CFRP) strand with better corrosion resistance and fatigue resistance and uses it in concrete structures. The bond anchorage is usually used to anchor CFRP tension members, which bonds the CFRP through the binding medium. Through experimental research on the CFRP strand bond anchorage, the inner taper of the CFRP prestressed strand cone was anchored and the influence of different anchor lengths and bonding media on the anchorage performance was determined. The test results demonstrate that the taper of the conical anchorage described in this paper is a key factor affecting its anchorage performance and increasing the inner taper within a certain range is beneficial to improving the anchorage performance of the conical anchorage. The bonded anchorage of the CFRP prestressed strand with a 200 mm anchor is the most reliable and efficient, as the taper of the 200 mm anchor is the largest. The average anchoring efficiency coefficient of the 200 mm anchor was 96.4%, which is 3.7% and 2.6% higher than the average anchoring efficiency coefficient of 220 mm and 250 mm anchors, respectively. The anchoring efficiency of the anchor is also high (94.1%) when the epoxy resin mortar is used as the bonding medium. Moreover, after an appropriate amount of quartz sand is added to the epoxy resin, the overall comprehensive performance of the anchor can be improved to a certain extent and the stress of the CFRP strand can be improved. The coupling between ultra-high-performance concrete dry mix (UHPC-GJL) and CFRP strand materials is not suitable for UHPC-GJL being used, as its binding medium as the average anchoring efficiency coefficient is only 44.5% when UHPC-GJL is used as the anchor bonding medium.

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“…Fiber-reinforced polymer (FRP) composites have been greatly developed worldwide and have become one of the most popular construction materials for repair and rehabilitation and new construction [1][2][3][4][5][6][7][8][9][10]. Pultruded glass fiber reinforced polymer (GFRP) composites are great candidates for newly constructed bridges decks.…”

Section: Introductionmentioning

confidence: 99%

Material-structure integrated design optimization of GFRP bridge deck on steel girder

et al. 2020

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Design optimization of fiber-reinforced polymeric (FRP) composite products is essential to facilitate their applications in engineering structures. For bridge structures, the main design optimization goals are the reduction of FRP material consumption and the structure weight, which aim to reduce the initial construction cost and achieve a longer bridge span. Compared with conventional steel-concrete composite bridges, FRP-steel composite bridges possess more design variables and more complex design process, which necessitate the simplified optimization models. This paper aims to propose a two-scale design optimation method for FRP bridge deck on the steel girder. The macro behavior of the pultruded FRP composite bridge deck is analyzed. Regarding the micro level, the equivalent properties of pultruded GFRP lamination are calculated by combining micromechanics and classical lamination theory (CLT).The above-mentioned macro pultruded GFRP bridge level and the micro fiber/resin level were bridged based on the assumption that the micro-component effective homogenized strain equals to the corresponding macro strain. The two-scale lamination optimization of pultruded GFRP bridge deck is finally achieved by finding optimized two-scale design variables that can achieve the minimum bridge weight or the lowest initial construction cost with all listed constraint requirements satisfied. A pultruded FRP deck supported on equally-spaced steel girders was selected as a case study to show how to obtain

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Shear Performance Assessment of Sand-Coated GFRP Perforated Connectors Embedded in Concrete

Cited by 8 publications

References 29 publications

Engineering Properties of New Claw Connectors for Alkali-Resistant Glass-Fiber-Reinforced Plastics

Engineering Properties of New Claw Connectors for Alkali-Resistant Glass-Fiber-Reinforced Plastics

Experimental Research on Bonded Anchorage of Carbon Fiber Reinforced Polymer Prestressed Strands

Material-structure integrated design optimization of GFRP bridge deck on steel girder

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