Flexural behavior and crack width prediction of UHPC slabs reinforced with FRP bars

Xiang, Da; Hou, Zhujian; Liu, Yuqing; Li, Yida; Xu, Xiaoqing

doi:10.1016/j.jobe.2023.107548

Cited by 3 publications

(2 citation statements)

References 22 publications

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“…Similar studies have also been conducted by Meng et al 19,20 on the flexural response of glass or carbon fiber fabrics reinforced UHPC panels. Xiang et al 33 investigated the flexural behavior of FRP reinforced UHPC plates, and a calculation approach has been established for the stresses and crack width in FRP reinforced UHPC plates. A number of studies have been conducted on FRP-UHPC structures.…”

Section: Introductionmentioning

confidence: 99%

Behavior and modeling of FRP grid‐reinforced ultra‐high‐performance concrete under uniaxial tension

Zeng,

Zhuge

et al. 2024

Structural Concrete

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Fiber reinforced polymer (FRP) reinforced ultra‐high‐performance concrete (UHPC) structural elements have become increasing popular in research and industry communities. In this paper, uniaxial tension tests were conducted to study the effects of fiber type, fiber length, and fiber content on tensile behavior of FRP grid reinforced UHPC plates (FGRUPs). Additionally, the microstructure analysis of specimens was conducted using scanning electron microscopy. Test results reveal that carbon FRP (CFRP) grid can substantially enhance the tensile performance of UHPC under tension: (1) the FGRUPs exhibit a post‐crack strain‐hardening behavior while the UHPC plates exhibit a post‐crack strain‐softening behavior; (2) the FRP grid enhances the cracking stress of UHPC specimens (except for plates with 1% basalt fibers) and the stiffness of the second segment of the stress–strain curve, and substantially enhances the ultimate tensile stress UHPC specimens. Also, the cost‐effectiveness analysis indicates that plates containing 1% of 12 mm length PE fibers have a highest cost efficiency index. Finally, a modified tensile stress–strain model for FGRUPs is proposed and verified.

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Section: Introductionmentioning

confidence: 99%

Behavior and modeling of FRP grid‐reinforced ultra‐high‐performance concrete under uniaxial tension

Zeng,

Zhuge

et al. 2024

Structural Concrete

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“…These resulting composites, termed FRP Reinforced UHPC (FRU) composites, are devoid of steel, offering exceptional durability and excellent tensile strength. [31][32][33][34][35] Xiang et al 36 investigated the flexural behavior of FRU plates, and a calculation approach has been established for the stresses and crack width in FRU plates. A number of studies have been conducted on FRU structures.…”

Section: Introductionmentioning

confidence: 99%

Offshore floating wind turbine foundation revolution enabled by fiber-reinforced polymer (FRP) reinforced cementitious materials

Fan,

Zeng,

et al. 2024

TIMS

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<p>Offshore floating wind turbines (OFWTs) are gaining popularity due to their superior wind energy capture and minimal visual impact. However, traditional steel support foundations for OFWTs are plagued by corrosion issues. This article proposes the use of Fiber-Reinforced Polymer (FRP) reinforced Ultra-High Performance Concrete (UHPC) composites, referred to as FRU composites, for OFWT foundations. Durability assessment of FRU plates under simulated marine environment is conducted based on accelerated aging tests on FRU plates. Scanning electron microscope (SEM) analyses are conducted to explore the fracture surface and interface between FRP and UHPC matrix. A series of tests are conducted and the test results of the FRU elements are summarized in this article. Strength design methodologies for FRU elements under various loadings are established based on summary of existing studies. Hydrodynamic analyses and comparative studies between FRU and steel OFWTs reveal that FRU OFWTs demonstrate improved stability and reduced motion responses under combined wind-wave-current loading conditions. The successful development of FRU composites is anticipated to revolutionize the OFWT industry by offering durable and cost-effective foundation options.</p>

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The performance of CFRP-strengthened heat-damaged metakaolin-based geopolymer concrete cylinders containing reclaimed asphalt aggregate

Abadel

2024

Materials Science-Poland

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Concrete structures are extremely vulnerable to fire damage, which greatly undermines their structural strength and durability. Recently, there has been a concerted effort to develop sustainable concrete materials. Geopolymer concrete (GPC) is a promising substitute for conventional cement concrete due to its use of recycled materials. However, despite the positive effect it has on the environment, GPC is susceptible to heat, which can cause it to deteriorate over time. In response to this issue, the use of carbon-fiber reinforced polymer (CFRP) has been proposed as a means of strengthening heat-damaged GPC. This study aims to investigate the effectiveness of CFRP-strengthened heat-damaged metakaolin-based GPC made from reclaimed asphalt pavement (RAP) aggregate. Three concrete mixtures were used, in which the conventional aggregate was substituted with RAP aggregate at 0%, 25%, and 50% replacement levels. In addition, the concrete cylinders were tested under ambient conditions and subjected to 300°C. The results indicated that the substitution with 25% RAP aggregate significantly reduced compressive strength by 39.1%, while 50% replacement resulted in a 66.8% decrease compared with the control mixture. The use of CFRP sheets to strengthen heat-damaged GPC specimens was proven to be effective in increasing the resistance of the heated specimens and restoring the compressive strength and confinement energy to their original state before reaching the ultimate failure point. The use of CFRP sheets significantly increased compressive strengths, with increases ranging from 87.7% to 368.8% at 26°C and 58.8% to 153.9% at 300°C, compared with each mixture’s unstrengthened control specimen.

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Flexural behavior and crack width prediction of UHPC slabs reinforced with FRP bars

Cited by 3 publications

References 22 publications

Behavior and modeling of FRP grid‐reinforced ultra‐high‐performance concrete under uniaxial tension

Behavior and modeling of FRP grid‐reinforced ultra‐high‐performance concrete under uniaxial tension

Offshore floating wind turbine foundation revolution enabled by fiber-reinforced polymer (FRP) reinforced cementitious materials

The performance of CFRP-strengthened heat-damaged metakaolin-based geopolymer concrete cylinders containing reclaimed asphalt aggregate

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