Fiber content optimization of UHPC and R-UHPC oriented to tensile behavior and cost reduction

Luo, Xiaowen; Li, Aidong; Zhang, Duo

doi:10.1016/j.conbuildmat.2023.132314

Cited by 13 publications

(2 citation statements)

References 45 publications

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“…The efficiency η strain of steel fibers in restricting the maximum crack propagation at different strain levels can be calculated through the following equation, which is derived from a modification of the equation presented in Ref. [29]:…”

Section: Fiber Efficiency In Restricting Maximum Crack Propagationmentioning

confidence: 99%

“…Bian et al [26] and Qiu et al [27] tested the direct tensile behavior of UHPC and R-UHPC and suggested that the inclusion of rebars enhances the post-cracking stiffness and load-bearing capacity of UHPC, and simultaneously restrains the maximum crack width propagation. Guo et al [28] and Luo et al [29] further studied the tensile ductility of UHPC and R-UHPC, revealing that UHPC with a lower fiber volume fraction exhibits superior ductility at the same reinforcement ratio. Indeed, to meet the structural load-bearing requirements, the incorporation of steel rebars within UHPC has become common practice in engineering.…”

Section: Introductionmentioning

confidence: 99%

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Reinforcement Effects on Tensile Behavior of Ultra-High-Performance Concrete (UHPC) with Low Steel Fiber Volume Fractions

Luo,

Zhang,

et al. 2024

Materials

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Ultra-high-performance concrete (UHPC) with a low steel fiber volume fraction offers lower material costs than UHPC with typical steel fiber volume fractions, and has the potential to mitigate the ductility degradation of rebar-reinforced UHPC (R-UHPC). This study explores the reinforcement effect on the tensile behavior of UHPC with a low fiber volume fraction with the aim of facilitating more cost-efficient UHPC applications. The axial tensile behavior of 30 UHPC specimens with low fiber volume fractions at different reinforcement ratios was tested through direct tensile tests. The findings indicate that adopting UHPC with a low fiber volume fraction can significantly mitigate the ductility deterioration of rebar-reinforced UHPC (R-UHPC), and both increasing the reinforcement ratio and decreasing the fiber volume fraction contribute to the improvement in ductility. The failure modes of R-UHPC are determined by the ratio of reinforcement ratio and fiber volume fraction, rather than a single parameter, which also means that R-UHPC with different parameters may correspond to different methods to predict tensile load-bearing capacity. For UHPC with a fiber volume fraction low to 0.5%, incorporating steel rebars gives superior multi-crack cracking behavior and excellent capacity to restrict the maximum crack width. Increasing the fiber volume fraction from 0.5% to 1.0% at the same reinforcement ratio will yield little benefit other than an increase in tensile load-bearing capacity.

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Section: Fiber Efficiency In Restricting Maximum Crack Propagationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reinforcement Effects on Tensile Behavior of Ultra-High-Performance Concrete (UHPC) with Low Steel Fiber Volume Fractions

Luo,

Zhang,

et al. 2024

Materials

Self Cite

View full text Add to dashboard Cite

show abstract

Effects of specimen thickness and fiber length on tensile and cracking behavior of UHPFRC: Uniaxial tensile test and micromechanical modeling

Tao,

Qiu,

Wille

et al. 2025

Cement and Concrete Composites

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Synergy performance of hybrid fiber-reinforced ultra-high-performance cementitious composites with low fiber contents

Thanh TRAN,

Hung NGUYEN,

Kiet TRAN

et al. 2024

Composites Part A: Applied Science and Manufacturing

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Fiber content optimization of UHPC and R-UHPC oriented to tensile behavior and cost reduction

Cited by 13 publications

References 45 publications

Reinforcement Effects on Tensile Behavior of Ultra-High-Performance Concrete (UHPC) with Low Steel Fiber Volume Fractions

Reinforcement Effects on Tensile Behavior of Ultra-High-Performance Concrete (UHPC) with Low Steel Fiber Volume Fractions

Effects of specimen thickness and fiber length on tensile and cracking behavior of UHPFRC: Uniaxial tensile test and micromechanical modeling

Synergy performance of hybrid fiber-reinforced ultra-high-performance cementitious composites with low fiber contents

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