Effect of crack angle and concrete strength on the dynamic fracture behavior of rock-based layered material containing a pre-existing crack

Guo, Tengfei; Liu, Kewei; Li, Xiang; Jin, Peng; Yang, Jiacai; Zhang, Aimin; Zou, Liansong

doi:10.1007/s43452-023-00741-4

Artykuł - szczegóły

Tytuł artykułu

Effect of crack angle and concrete strength on the dynamic fracture behavior of rock-based layered material containing a pre-existing crack

Autorzy

Guo Tengfei , Liu Kewei , Li Xiang , Jin Peng , Yang Jiacai , Zhang Aimin , Zou Liansong

Wybrane pełne teksty z tego czasopisma

http://www.springer.com/journal/43452

Identyfikatory

DOI

10.1007/s43452-023-00741-4

Warianty tytułu

Języki publikacji

Abstrakty

Dynamic fracture behavior of rock-based layered material containing a pre-existing crack was investigated, which is crucial to evaluate the stability of rock-based systems. Dynamic tests on semi-circular bend (SCB) samples were conducted with a split-Hopkinson Pressure Bar (SHPB) system and the cracking process was collected using digital image correlation (DIC). An MTS Insight 30 electromechanical test equipment was adopted to perform static fracture experiment for comparison. Different typical fracture modes were classified: interfacial fracture, combined mode of tensile–shear fracture, and combined mode of compression–shear fracture. Regardless of static load or dynamic load, the fracture mode is controlled by crack dip angle, and the peak load is proportional to crack dip angle. The increase in concrete strength makes a strengthening impact on the bearing capacity of SCB sample, which can prevent the propagation of secondary cracks in the concrete. Both static and dynamic fracture toughness are significantly affected by dip angle. The difference between static and dynamic fracture toughness of mixed-mode reduces initially and subsequently increases with an increase in dip angle. Furthermore, comparing with static fracture toughness, dynamic fracture toughness substantially depends stronger on dip angle. The dip angle and concrete strength have an obvious effect on the fracture resistance.

Słowa kluczowe

rock-based layered sample SCB concrete strength propagation behavior fracture toughness

beton wytrzymałość betonu pękanie betonu

Wydawca

Springer
Wrocław University of Science and Technology

Czasopismo

Archives of Civil and Mechanical Engineering

Rocznik

2023

Tom

Vol. 23, no. 3

Strony

art. no. e198, 2023

Opis fizyczny

Bibliogr. 62 poz., fot., rys., wykr.

Twórcy

autor

Guo Tengfei

School of Resources and Safety Engineering, Central South University, 932 South Lushan Road, Changsha 410083, China

autor

Liu Kewei

kewei_liu@csu.edu.cn

School of Resources and Safety Engineering, Central South University, 932 South Lushan Road, Changsha 410083, China

https://orcid.org/0000-0001-7017-3036

autor

Li Xiang

lixiang85@mail.sysu.edu.cn

School of Civil Engineering, Sun Yat-sen University, Zhuhai 519082, China

autor

Jin Peng

School of Resources and Safety Engineering, Central South University, 932 South Lushan Road, Changsha 410083, China

autor

Yang Jiacai

School of Resources and Safety Engineering, Central South University, 932 South Lushan Road, Changsha 410083, China

autor

Zhang Aimin

School of Resources and Safety Engineering, Central South University, 932 South Lushan Road, Changsha 410083, China

autor

Zou Liansong

School of Resources and Safety Engineering, Central South University, 932 South Lushan Road, Changsha 410083, China

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024)

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-d6b21abc-9e41-4272-bb6b-39b5035be006