The role of water content in rate dependence of tensile strength of a fine-grained sandstone

Cai, Xin; Cheng, Chuanqing; Zhao, Yuan; Zhou, Zilong; Wang, Shaofeng

doi:10.1007/s43452-022-00379-8

Artykuł - szczegóły

Tytuł artykułu

The role of water content in rate dependence of tensile strength of a fine-grained sandstone

Autorzy

Cai Xin , Cheng Chuanqing , Zhao Yuan , Zhou Zilong , Wang Shaofeng

Wybrane pełne teksty z tego czasopisma

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

Identyfikatory

DOI

10.1007/s43452-022-00379-8

Warianty tytułu

Języki publikacji

Abstrakty

Rocks in nature are commonly in partially saturated conditions and exposed to dynamic loads. In this study, to explore the coupled effects of water content and loading rate, dynamic Brazilian disc experiments were conducted on Yunnan sandstone samples with four levels of water content (from air-dried to water-saturated) under various loading rates (from 100 to 600 GPa/s) using a split Hopkinson pressure bar. The test results show that for each water content, the dynamic tensile strength of sandstone is positively sensitive to loading rate. The rate dependence of tensile strength increases as the rise of water content. The change trends of tensile strength against water content depend on loading rate: as water content rises, the tensile strength displays the manner of “no change followed by fast drop” at loading rates of 10–4 and 100 GPa/s. However, when the loading rate is above 200 GPa/s, the tensile strength increases first and then declines. The turning point occurs at water content between 1.0 and 2.0%. These observations can be interpreted with the competition between water weakening and enhancing effects under different loading conditions.

Słowa kluczowe

water content SHPB Brazilian disc test tensile strength loading rate rate dependence

skład wody rozciąganie skała

Wydawca

Springer
Wrocław University of Science and Technology

Czasopismo

Archives of Civil and Mechanical Engineering

Rocznik

2022

Tom

Vol. 22, no. 1

Strony

art. no. e58, 2022

Opis fizyczny

Bibliogr. 58 poz., fot., rys., wykr.

Twórcy

autor

Cai Xin

xincai@csu.edu.cn

School of Resources and Safety Engineering, Central South University, Changsha 410010, Hunan, China
Hunan Provincial Key Laboratory of Resources Exploitation and Hazard Control for Deep Metal Mines, Changsha 410010, Hunan, China

autor

Cheng Chuanqing

School of Resources and Safety Engineering, Central South University, Changsha 410010, Hunan, China

autor

Zhao Yuan

zhaoyuan92@csu.edu.cn

School of Resources and Safety Engineering, Central South University, Changsha 410010, Hunan, China

https://orcid.org/0000-0003-2553-0975

autor

Zhou Zilong

School of Resources and Safety Engineering, Central South University, Changsha 410010, Hunan, China
Hunan Provincial Key Laboratory of Resources Exploitation and Hazard Control for Deep Metal Mines, Changsha 410010, Hunan, China

autor

Wang Shaofeng

School of Resources and Safety Engineering, Central South University, Changsha 410010, Hunan, China
Hunan Provincial Key Laboratory of Resources Exploitation and Hazard Control for Deep Metal Mines, Changsha 410010, Hunan, China

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Uwagi

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)

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-898fc870-eea8-401d-99a8-dcfced9d6b10