Energy dissipation and fractal characteristics of basalt fiber reinforced concrete under impact loading

Xie, Huanzhen; Zhu, Haonan; Zhang, Qihu; Deng, Xin; Wei, Ping; J, Lu

doi:10.1016/j.istruc.2022.10.086

Cited by 15 publications

(4 citation statements)

References 25 publications

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“…Li 34 entailed introducing radial restraints in SHPB specimens to enhance the compressive strength of concrete-like samples, and Wang 35 explored the mechanical properties and progressive fracturing of concrete materials under biaxial confinement and repetitive dynamic loads. Xie 36 ventured into examining the effects of disparate strain rates on the dynamic compression characteristics, energy dissipation, and fragmentation morphology of Basalt Fiber Reinforced Concrete (BFRC). In a foundational study grounded on Separate Hopkins Compression Rod Experiment, Wang 37 , 38 embarked on a meticulous exploration to delineate the critical aspects of energy dynamics involved in coal sample impacts, focusing on both burst-prone and non-burst-prone specimens.…”

Section: Introductionmentioning

confidence: 99%

An analysis of impact load and fragmentation dimension to explore energy dissipation patterns in coal crushing

Wang,

Jing,

Zhang

et al. 2023

Sci Rep

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This research delineates the energy dissipation characteristics in coal crushing under impact loads, leveraging the capabilities of Separated Hopkinson Pressure Bar experimental system. A meticulous examination of both burst-prone and non-burst-prone coal samples during destruction processes was undertaken to decipher the dynamic compression mechanical attributes from perspectives of energy and fragmentatio‘s fractal dimensions. Burst-prone coal showcases a more pronounced escalation in fragmentation work in comparison to non-burst-prone samples, thereby illustrating a perceptible strain-rate dependent effect correlating with enhanced strain rates. Additionally, it was observed that incident, reflected, and transmitted energy trajectories for both sample categories follow an approximately linear ascendancy, albeit exhibiting diverse magnitudes. Burst-prone coal manifests a more rapid and focused energy growth compared to its non-burst-prone counterpart. When subjected to impact loads, a notable trend was discerned where the fragmentation’s fractional dimension escalated persistently with both the incident energy and the crushing work, portraying a prominent growth effect. The insights garnered from this study pave the way for distinguishing between impacted and unimpacted coal samples using energy perspectives and fragmentation's fractal dimensions.

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Section: Introductionmentioning

confidence: 99%

An analysis of impact load and fragmentation dimension to explore energy dissipation patterns in coal crushing

Wang,

Jing,

Zhang

et al. 2023

Sci Rep

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“…Generally, the reinforcing mechanism of the novel composites hinders the crack generation and propagation in the cement matrix through the fiber or fabric bridging effect. 6 In recent years, basalt fiber has been widely utilized in civil transportation and geotechnical construction by virtue of its eminent properties, including high strength, high modulus, high and low temperature resistance, chemical corrosion resistance, desirable adhesion with concrete, [7][8][9] etc. In addition, compared with other high-performance fibers such as carbon fiber and glass fiber, the manufacturing of basalt fiber produces almost no pollution and costs less.…”

mentioning

confidence: 99%

“…In addition, sometimes changes in external factors, such as temperature and impact velocity, during the impact event will also be taken into consideration. Xie et al 8 studied the influence of varying volume contents of basalt fibers on the dynamic impact performance and energy absorption capacity of concrete composites. It was found that the fiber volume content of 0.26% gained the most obvious enhancement effect and the dissipated energy rate reached the maximum.…”

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confidence: 99%

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Mechanical behaviors of cementations matrix composites reinforced with basalt weft-knitted spacer fabric under low-velocity impact

Liu

et al. 2023

Textile Research Journal

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The attention of this paper is focused on the impact resistance behavior and reinforcing mechanism of cement-based composites reinforced with weft-knitted spacer fabrics (FKRCs). Composites were manufactured with basalt spacer fabrics and calcium sulfoaluminate cement, both of which are eco-friendly materials. Three kinds of FKRCs with varying needle span distances of the spacer fabrics were compared with plain concrete and concrete reinforced with basalt fibers via a static-bursting test and low-velocity impact test. In addition, the failure morphologies of damaged specimens were analyzed. The experimental results revealed that the basalt spacer fabric was able to obviously enhance the impact resistance and energy absorption capacity of the concrete, while the reinforcing effect of basalt fibers was relatively restricted. In addition, spacer fabrics played a crucial role in retarding the crack generation and propagation in the cement matrix by the textile bridging effect. Furthermore, FKRCs were more sensitive to dynamic impact load, exhibiting a higher maximum peak load but lower maximum displacement. With the increase of span distances, the impact resistance of the specimens was enhanced with higher maximum impact load and energy absorption, and the brittleness of plain concrete was improved. In addition, the spacer yarn structure exhibited considerable effects on the impact behavior of the composites rather than basalt spacer fabrics. Therefore, the FKRC is suitable for structural components that require higher impact resistance in engineering applications.

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Compressive behavior of steel slag fine aggregate concrete under impact loading

Liu,

Xue,

Dong

et al. 2024

Structural Concrete

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To investigate the compressive behavior of steel slag fine aggregate concrete (SSC) under impact loading, the normal concrete and steel slag fine aggregate concrete with varying steel slag fine aggregate (SSA) contents were prepared and a Split Hopkinson Pressure Bar (SHPB) with a diameter of 100 mm was used for the dynamic compression testing under various strain rates. The microstructure characteristics of concrete specimens were observed by scanning electron microscopy to investigate the impact behavior changes mechanism of SSC under dynamic loading. The research results indicate that the compressive strength, DIF, and impact toughness of the specimens exhibit significant strain rate effects, all of which increase with the increase of strain rate. At similar strain rates, both impact toughness and dynamic compressive strength show an upward trend with the increase of steel slag content, while DIF decreases with the increase of steel slag content. The microstructure of SSC is denser, and the hydration product of SSA fills the internal defects of concrete and significantly enhances the interface transition zone (ITZ) between fine aggregates and cement matrix, which has an enhancement effect on impact toughness and the dynamic compressive strength of concrete. The empirical formulas were proposed based on the testing results to predict the DIF of SSC with various SSA contents. The compression constitutive models considering strain rate and steel slag content of SSC were established, and the fitting consequences with the test results accord rather well.

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Energy dissipation and fractal characteristics of basalt fiber reinforced concrete under impact loading

Cited by 15 publications

References 25 publications

An analysis of impact load and fragmentation dimension to explore energy dissipation patterns in coal crushing

An analysis of impact load and fragmentation dimension to explore energy dissipation patterns in coal crushing

Mechanical behaviors of cementations matrix composites reinforced with basalt weft-knitted spacer fabric under low-velocity impact

Compressive behavior of steel slag fine aggregate concrete under impact loading

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