Study on the damage behavior and energy dissipation characteristics of basalt fiber concrete using SHPB device

Zhou, Yu; Zou, Shizhuo; Wen, Jianmin; Zhang, Yongsheng

doi:10.1016/j.conbuildmat.2023.130413

Cited by 34 publications

(6 citation statements)

References 33 publications

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“…The main reason for the increase in the compressive strength of concrete was that the appropriate amount of FA incorporated into concrete had an "aggregate effect" and reduced the interfacial friction between aggregate particles 44 . The nano-TiC, BF, and FA work together to improve the compactness of the concrete, which has a certain "filling" effect and reduces the defects inside the concrete, and the three-dimensional mesh structure formed by the BF in the concrete increases the resistance to deformation of the concrete 7 . However, excessive amounts of nano-TiC, FA, and BF could cause "agglomeration" in the cement matrix.…”

Section: Resultsmentioning

confidence: 99%

“…It has been proved by numerous studies that adding fibers to concrete could effectively reduce cracks and improve the durability of concrete. The Basalt fiber (BF) was widely used in concrete due to its mechanical properties, lower cost, and resistance to alkaline corrosion 7 . Although mixing the appropriate amount of fibers in concrete could enhance its mechanical properties, it still could not meet the requirements of buildings with high-strength classes.…”

Section: Introductionmentioning

confidence: 99%

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Research on mechanical properties of concrete by nano-TiC-BF-fly ash

Yang,

Yu,

et al. 2024

Sci Rep

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Ultra-high-rise buildings require high concrete bearing capacity. Ordinary concrete often fails to meet the project requirements. Admixture of admixtures in concrete is a means of solution. Currently, studies on the incorporation of basalt fiber (BF) and fly ash (FA) in concrete are relatively mature. However, research on incorporating nano-Titanium Carbide (nano-TiC) in concrete is still relatively scarce, which has a lot of room for development. To further improve the mechanical properties of concrete, BF, and FA synergized with nano-TiC were incorporated into concrete to produce TBF concrete in this study. And Response Surface Methodology (RSM) was used to optimize the mechanical properties of concrete. The collapse and compressive deformation damage characteristics of concrete were analyzed. The microstructure of the cement matrix was analyzed by the SEM (Scanning Electron Microscope). An optimization model of the TBF concrete craving function was developed. Optimized ratios with compressive, split tensile, and flexural strengths as response objectives were obtained, and the accuracy of the optimized ratios was investigated using the same experimental conditions. The results of the study showed that FA increased the collapse of concrete, while nano-TiC and BF decreased the collapse of concrete. Under uniaxial compression, nano-TiC, FA, and BF together incorporated into concrete can improve its compressive damage state. Moderate amounts of nano-TiC, BF, and FA could improve the mechanical properties of concrete. Their optimal mixing ratio admixtures were 0.88%, 0.24%, and 5.49%, respectively. And the measured values under the same conditions were compared with the predicted values. The maximum difference in compressive strength was 6.09%. The maximum difference in split tensile strength was 7.14%. The maximum difference in flexural strength was 8.45%. This indicated that the accuracy of the RSM optimization model was good. A moderate amount of nano-TiC, FA, and BF could improve the densification of concrete.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on mechanical properties of concrete by nano-TiC-BF-fly ash

Yang,

Yu,

et al. 2024

Sci Rep

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“…The remaining portion is primarily absorbed by the specimen, causing it to fracture and dissipate energy in the process. According to the principle of energy conservation, the energy absorbed by the specimen during the dynamic splitting test of SHPB is [24]:…”

Section: Shpb Test Energy Dissipationmentioning

confidence: 99%

Dynamic Splitting Performance and Energy Dissipation of Fiber-Reinforced Concrete under Impact Loading

Cui,

Wang,

Zhang

et al. 2024

Materials

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In this paper, the influence of different fiber materials on the dynamic splitting mechanical properties of concrete was investigated. Brazil disc dynamic splitting tests were conducted on plain concrete, palm fiber-reinforced concrete, and steel fiber-reinforced concrete specimens using a split Hopkinson pressure bar (SHPB) test device with a 100 mm diameter and a V2512 high-speed digital camera. The Digital Image Correlation (DIC) technique was used to analyze the fracture process and crack propagation behavior of different fiber-reinforced concrete specimens and obtain their dynamic tensile properties and energy dissipation. The experimental results indicate that the addition of fibers can enhance the impact toughness of concrete, reduce the occurrence of failure at the loading end of specimens due to stress concentration, delay the time to failure of specimens, and effectively suppress the expansion of cracks. Steel fibers exhibit a better crack-inhibiting effect on concrete compared to palm fibers. The incident energy for the three types of concrete specimens is roughly the same under the same impact pressure. Compared with plain concrete, the energy absorption rate of palm fiber concrete is decreased, while that of steel fiber concrete is increased. Palm fiber-reinforced concrete and steel fiber-reinforced concrete have lower peak strains than plain concrete under the same loading duration. The addition of steel fibers significantly impedes the internal cracking process of concrete specimens, resulting in a relatively slow growth of damage variables.

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“…Building upon this technical approach, researchers conducted extensive experiments and applied the newly modified heat-shrinkable fibers from the textile industry in the construction of the solid sections of the C55 main tower piers of the Huangmao Sea Cross-Sea Bridge and the C60 prestressed box girder of the Stone Beach Bridge in Guangzhou, Zengcheng. Without the incorporation of heat-shrinkable fibers [34][35][36][37], the C55 main tower piers of the Huangmao Sea Cross-Sea Bridge exhibited numerous cracks, whereas the introduction of heat-shrinkable fibers prevented crack formation. Similarly, the C60 prestressed box girder of the Stone Beach Bridge did not exhibit cracks after incorporating the heat-shrinkable fibers.…”

Section: The Impact Of Fibers On the Performance Of Large-volume Conc...mentioning

confidence: 99%

The Application of Heat-Shrinkable Fibers and Internal Curing Aggregates in the Field of Crack Resistance of High-Strength Marine Structural Mass Concrete: A Review and Prospects

Li,

Yu,

et al. 2023

Polymers

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High-strength large-volume marine concrete is a critical material required for the construction of large-span sea-crossing bridges. However, the widespread issue of cracking in this concrete type significantly impacts the durability and load-bearing capacity of concrete structures. Dealing with these cracks not only delays construction schedules but also increases project costs. Addressing these pressing technical issues, this project proposes the use of newly developed high-modulus heat-shrinkable fibers (polyethylene terephthalate fiber, also known as PET fiber) from the textile industry. These fibers utilize the heat generated during the hydration of large-volume concrete to trigger its contraction, applying three-dimensional micro-prestressing stress to enhance its crack resistance, while simultaneously incorporating prewetted aggregates with high-performance micro-porous structures and utilizing their internal curing effect to reduce concrete shrinkage. This helps to minimize the loss of micro-prestressing stress caused by concrete shrinkage and creep. This synergistic approach aims to improve the crack resistance of high-strength large-volume marine concrete. By employing modern testing and simulation analysis techniques, this study aims to uncover the mechanism by which the heat-shrinkable fibers exert micro-prestressing stress on concrete and the water release mechanism of internal curing aggregates during the temperature rise and fall stages of large-volume concrete. It seeks to elucidate the cooperative regulation of the microstructure and performance enhancement mechanisms of high-strength large-volume marine concrete by the heat-shrinkable fibers and internal curing aggregates. This research will lead to the development of novel methods for the design and crack control of high-strength large-volume marine concrete, which will be validated through engineering demonstrations. The outcomes of this study will provide theoretical foundations and technical support for the preparation of the crack-resistant large-volume marine concrete used in large-span bridges.

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Study on the damage behavior and energy dissipation characteristics of basalt fiber concrete using SHPB device

Cited by 34 publications

References 33 publications

Research on mechanical properties of concrete by nano-TiC-BF-fly ash

Research on mechanical properties of concrete by nano-TiC-BF-fly ash

Dynamic Splitting Performance and Energy Dissipation of Fiber-Reinforced Concrete under Impact Loading

The Application of Heat-Shrinkable Fibers and Internal Curing Aggregates in the Field of Crack Resistance of High-Strength Marine Structural Mass Concrete: A Review and Prospects

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