Unified analysis for tailorable multi-scale fiber reinforced cementitious composites in tension

Zhou, Peizhao; Feng, Peng

doi:10.1016/j.compositesb.2023.110586

Cited by 23 publications

(2 citation statements)

References 64 publications

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“…To tackle this problem, researchers have proposed using FRP reinforced UHPC structures. [18][19][20][21][22] Combining FRP reinforcement and UHPC matrix, FRP reinforced UHPC structures possess the following merits: (1) the insufficient stiffness of FRP reinforced normal concrete structures can be alleviated as the elastic modulus of UHPC is much higher than that of normal concrete; (2) the post-peak strainsoftening behavior of UHPC could be mitigated even though a small amount of short fibers are used in UHPC. In FRP reinforced UHPC structures, non-metallic fibers (e.g., polyethylene [PE] fibers) can be used so that the corrosion issue is expected to be avoidable.…”

Section: Introductionmentioning

confidence: 99%

“…However, FRP reinforced normal concrete structures have insufficient stiffness due to the relatively low elastic modulus of the FRP reinforcement. To tackle this problem, researchers have proposed using FRP reinforced UHPC structures 18–22 . Combining FRP reinforcement and UHPC matrix, FRP reinforced UHPC structures possess the following merits: (1) the insufficient stiffness of FRP reinforced normal concrete structures can be alleviated as the elastic modulus of UHPC is much higher than that of normal concrete; (2) the post‐peak strain‐softening behavior of UHPC could be mitigated even though a small amount of short fibers are used in UHPC.…”

Section: Introductionmentioning

confidence: 99%

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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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