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A platform for research: civil engineering, architecture and urbanism
Research on energy dissipation and damage evolution of dynamic splitting failure of basalt fiber reinforced concrete
Highlights Revealing the effects of different basalt fiber content on dynamic tensile strength of concrete. Obtaining the rules of dissipated energy (rate) of concrete with basalt fiber content and loading level. Revealing the shear failure laws of basalt fiber reinforced concrete.
Abstract Based on split Hopkinson bar (SHPB) loading system and digital image correlation (DIC) technology, a series of dynamic splitting experiments of basalt fiber reinforced concrete (BFRC) were carried out to reveal the effects of basalt fiber content and loading level on the dynamic tensile properties, energy dissipation and damage evolution. The results show that the dynamic tensile strength and dynamic increase factor (DIF) have obvious strain rate effect, and the appropriate basalt fiber content (0.39%) can remarkably improve the dynamic tensile strength of concrete. According to the changing trend of dissipated energy curve, the dynamic splitting process can be divided into compaction stage, elastic stage, plastic yield stage and softening stage. Appropriate basalt fiber content (0.39%) can effectively improve the dissipated energy and dissipated energy rate of BFRC. The loading level only promotes the dissipated energy of BFRC, but has no obvious effect on the dissipated energy rate. Adding an appropriate basalt fiber content (0.39%) can reduce the shear strain, thereby reducing the damage degree of the shear failure zone, and delaying the cracking time in the center of the specimen to a certain extent.
Research on energy dissipation and damage evolution of dynamic splitting failure of basalt fiber reinforced concrete
Highlights Revealing the effects of different basalt fiber content on dynamic tensile strength of concrete. Obtaining the rules of dissipated energy (rate) of concrete with basalt fiber content and loading level. Revealing the shear failure laws of basalt fiber reinforced concrete.
Abstract Based on split Hopkinson bar (SHPB) loading system and digital image correlation (DIC) technology, a series of dynamic splitting experiments of basalt fiber reinforced concrete (BFRC) were carried out to reveal the effects of basalt fiber content and loading level on the dynamic tensile properties, energy dissipation and damage evolution. The results show that the dynamic tensile strength and dynamic increase factor (DIF) have obvious strain rate effect, and the appropriate basalt fiber content (0.39%) can remarkably improve the dynamic tensile strength of concrete. According to the changing trend of dissipated energy curve, the dynamic splitting process can be divided into compaction stage, elastic stage, plastic yield stage and softening stage. Appropriate basalt fiber content (0.39%) can effectively improve the dissipated energy and dissipated energy rate of BFRC. The loading level only promotes the dissipated energy of BFRC, but has no obvious effect on the dissipated energy rate. Adding an appropriate basalt fiber content (0.39%) can reduce the shear strain, thereby reducing the damage degree of the shear failure zone, and delaying the cracking time in the center of the specimen to a certain extent.
Research on energy dissipation and damage evolution of dynamic splitting failure of basalt fiber reinforced concrete
Xie, Huanzhen (author) / Yang, Liyun (author) / Zhang, Qihu (author) / Huang, Chen (author) / Chen, Meixia (author) / Zhao, Kangpu (author)
2022-03-24
Article (Journal)
Electronic Resource
English
Basalt fiber reinforced concrete and basalt composite pipe pile
| European Patent Office | 2024