Effects of content and length/diameter ratio of PP fiber on explosive spalling resistance of hybrid fiber-reinforced ultra-high-performance concrete

Shen, Yongjiang; Dai, Mengting; Pu, Wenlei; Xiang, Zhengliang

doi:10.1016/j.jobe.2022.105071

Cited by 7 publications

(2 citation statements)

References 33 publications

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“…For the generation of initial micro crack, PP and basalt fibers play a bridging role to prevent the development of micro crack. When the micro crack continues to expand and form macro crack, the steel fiber begins to restrict the development of crack to avoiding the rapid collapse and failure of specimen 33 – 36 . Based on the different reinforced mechanisms, the doping of hybrid fiber is an efficient method to improve the mechanical strength of specimen.…”

Section: Resultsmentioning

confidence: 99%

Novel cementitious materials with mechanoluminescence for the application of visible stress monitoring and recording

Zhang

Liu

Zhou

et al. 2023

Sci Rep

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The development of real-time and accurate visual stress detection is crucial for the field of building engineering. Herein, a new strategy is explored for the development of novel cementitious materials by hierarchical aggregation smart luminescent material and resin-based material. The cementitious material with such layered structure is inherently capable of visualization of stress monitoring and recording by converting the stress to visible light. The specimen fabricated by the novel cementitious material could repetitively emit green visible light under excitation of a mechanical pulse for 10 cycles, suggesting that the cementitious material shows highly reproducible performance. Moreover, the numerical simulations and analysis for the models of stress indicate that the luminescent time is synchronous with the stress and the emission intensity is proportional to the value of stress. To the best of our knowledge, this is the first study that the cementitious material realizes visible stress monitoring and recording, which supplies new insights for exploring modern multi-functional building materials.

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Section: Resultsmentioning

confidence: 99%

Novel cementitious materials with mechanoluminescence for the application of visible stress monitoring and recording

Zhang

Liu

Zhou

et al. 2023

Sci Rep

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“…At present, the research on the dynamic impact resistance of FRP-reinforced engineering components is very limited. Shen et al [7] added fiber to concrete and studied the impact resistance of fiber-reinforced concrete, and hybrid fibers had high impact resistance. Zhou et al [8] studied the impact properties of PET-reinforced concrete under a high strain rate and obtained a linear relationship between the ultimate compressive strain of concrete and time at relatively low energy.…”

Section: Introductionmentioning

confidence: 99%

Study on the Impact Resistance of FRP Pasted onto a Blastproof Partition Wall under Out-of-Plane Repeated Impact Load

et al. 2022

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A blastproof partition wall in civil air defense engineering is easily subjected to out-of-plane impact loads, such as object impacts, and structural collapse in peacetime. In this study, the pendulum impact test was carried out for the first time on six blastproof partition walls pasted with fiber-reinforced polymer (FRP). Using a method combining finite element simulation and experimental research, the influence of parameters such as the FRP type, layer number and width, and pendulum impact number on the impact resistance of the wall was systematically studied. The test results show that pasting FRP on the back of the blastproof partition wall can significantly improve the impact resistance and reduce the damage degree of the concrete. The impact recovery coefficient increased from 0.33 to 0.57, but with the increase in the number of impacts, large-rupture-strain FRP (LRS-FRP) can give full play to the advantages of a large tensile fracture strain and cooperate with the wall to deform, and the selection of FRP with a large tensile fracture strain is the key to resisting multiple impact loads. Finally, the experimental basis and an economical and reliable protection method are provided for the study of improving the impact resistance of the blastproof partition wall.

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A close look at fire-induced explosive spalling of ultra-high performance concrete: from materials to structures

Liu,

Du,

Yao

et al. 2024

Archiv.Civ.Mech.Eng

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Effects of content and length/diameter ratio of PP fiber on explosive spalling resistance of hybrid fiber-reinforced ultra-high-performance concrete

Cited by 7 publications

References 33 publications

Novel cementitious materials with mechanoluminescence for the application of visible stress monitoring and recording

Novel cementitious materials with mechanoluminescence for the application of visible stress monitoring and recording

Study on the Impact Resistance of FRP Pasted onto a Blastproof Partition Wall under Out-of-Plane Repeated Impact Load

A close look at fire-induced explosive spalling of ultra-high performance concrete: from materials to structures

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