Dynamic splitting tensile behaviour and statistical scaling law of hybrid basalt-polypropylene fibre-reinforced concrete

• Autorzy: Fu Qiang , Zhao Xu , Zhang Zhaorui , Peng Gang , Zeng Xiaohui , Niu Ditao

Identyfikatory

DOI

10.1007/s43452-021-00294-4

• Języki publikacji: EN

Abstrakty

EN

The dynamic splitting tensile behaviour of hybrid basalt‒polypropylene fibre-reinforced concrete (HBPRC) was investigated, and the reinforcing mechanism of the fibres was explored. The results indicate that the dynamic splitting tensile strength and dynamic energy dissipation capacity of HBPRC increased with strain rate. The effects of fibre type and content on the strain rate sensitivity of dynamic splitting tensile strength were consistent with that of dynamic dissipation energy. Furthermore, the dynamic splitting tensile strength of concrete was improved by adding appropriate content of basalt fibre (BF) and polypropylene fibre (PF), and the improving effect of hybrid BF and PF was the most significant. Excess fibres reduced the dynamic splitting tensile strength at low strain rates but improved it at high strain rates. The addition of fibres improved the dynamic dissipation energy and the impact resistance of concrete. With an increase in the strain rate, the pull-out lengths of BF and PF decreased gradually. When using hybrid BF and PF, the failure morphology of BF did not change considerably, although PF underwent more severe damage. Based on the weakest-link theory, a calculation model for the statistical scaling law of dynamic splitting tensile strength considering the strain rate effect was established.

Słowa kluczowe

EN

fibre; dynamic splitting tensile behavior; strain rate sensitivity; statistical scaling law

PL

włókno; rozciąganie; odkształcenie

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2021
• Tom: Vol. 21, no. 4
• Strony: 123--144
• Opis fizyczny: Bibliogr. 57 poz., fot., rys., wykr.

Twórcy

autor

Fu Qiang

• School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, People’s Republic of China
• State Key Laboratory of Green Building in Western China, Xi’an University of Architecture and Technology, Xi’an 710055, People’s Republic of China

autor

Zhao Xu

• School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, People’s Republic of China

autor

Zhang Zhaorui

• School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, People’s Republic of China

autor

Peng Gang

• School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, People’s Republic of China

autor

Zeng Xiaohui

• School of Civil Engineering, Central South University, Changsha 410075, People’s Republic of China

autor

Niu Ditao

• School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, People’s Republic of China
• State Key Laboratory of Green Building in Western China, Xi’an University of Architecture and Technology, Xi’an 710055, People’s Republic of China

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)