Classification and Fractal Characteristics of Limestone Fragments Obtained in Conventional Compression and Cyclic Loading Tests under Uniaxial and Triaxial Conditions
Joint Authors
Yang, Yongjie
Yang, Rui
Zha, Hao
Wang, Xiaodi
Yang, Xiuzhang
Zhang, Yang
Huang, Gang
Source
Advances in Materials Science and Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-04-24
Country of Publication
Egypt
No. of Pages
16
Abstract EN
The mechanical response characteristics of rocks under cyclic loading conditions are crucial factors for evaluating and analyzing the stability of rock mass during underground excavation.
In this study, based on fractal theory and a series of tests using the MTS815.02 rock mechanics test system, the classification and fractal characteristics of limestone specimen fragments are investigated.
The results show that limestone specimens subjected to cyclic loading can generate more small-sized fragments than conventional compression, but the large-fragment-producing abilities of the two tests exhibit small difference.
The mass fraction of the fragments in the cyclic loading test is obviously greater than that in the conventional test when the fragment size is less than 4.75 mm; however, only a small difference is observed between the cyclic loading tests with frequencies of 0.25 and 0.5 Hz.
In the same type of test, a confining pressure is helpful in reducing the fragmentation of limestone specimen.
As the size interval decreases, the shapes of limestone fragment transition from rectangular to long slice and then to square.
The results also indicate that the confining pressure has a significant influence on the size-quantity and size-mass fractal dimensions of limestone fragments.
The former has a positive correlation with the confining pressure, whereas the latter decreases with confining pressure.
The conclusions obtained in this investigation can enrich the theoretical research on the failure response and mechanism of rock under cyclic loading conditions.
American Psychological Association (APA)
Yang, Rui& Wang, Xiaodi& Zha, Hao& Yang, Xiuzhang& Zhang, Yang& Huang, Gang…[et al.]. 2020. Classification and Fractal Characteristics of Limestone Fragments Obtained in Conventional Compression and Cyclic Loading Tests under Uniaxial and Triaxial Conditions. Advances in Materials Science and Engineering،Vol. 2020, no. 2020, pp.1-16.
https://search.emarefa.net/detail/BIM-1128225
Modern Language Association (MLA)
Yang, Rui…[et al.]. Classification and Fractal Characteristics of Limestone Fragments Obtained in Conventional Compression and Cyclic Loading Tests under Uniaxial and Triaxial Conditions. Advances in Materials Science and Engineering No. 2020 (2020), pp.1-16.
https://search.emarefa.net/detail/BIM-1128225
American Medical Association (AMA)
Yang, Rui& Wang, Xiaodi& Zha, Hao& Yang, Xiuzhang& Zhang, Yang& Huang, Gang…[et al.]. Classification and Fractal Characteristics of Limestone Fragments Obtained in Conventional Compression and Cyclic Loading Tests under Uniaxial and Triaxial Conditions. Advances in Materials Science and Engineering. 2020. Vol. 2020, no. 2020, pp.1-16.
https://search.emarefa.net/detail/BIM-1128225
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1128225