Brittle Characteristic and Microstructure of Sandstone under Freezing-Thawing Weathering
Joint Authors
Gao, Feng
Yu, Songtao
Deng, Junren
Li, Jielin
Deng, Hongwei
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-09-21
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
As an important property of rock material, brittleness plays a vital role in rock engineering.
This paper raised the concept of elastic strain energy release rate and proposed an elastic strain energy release rate based brittleness index based on the most acceptable definition of brittleness.
Mechanical and Nuclear Magnetic Resonance parameters of sandstone under various Freezing-Thawing (F-T) cycles are also acquired and analyzed.
Then, the proposed brittleness index is used to compare with two recently proposed brittleness indices to verify its correctness and applicability.
Finally, the brittleness index is applied to evaluate the brittle behavior of F-T cycles treated sandstone under uniaxial compression.
The results show that elastic modulus, value of the postpeak modulus, and peak stress decrease with F-T cycles, and the porosity and microstructure develop with F-T cycles.
The proposed brittleness index is highly related to F-T cycles, peak stress, porosity, and elastic modulus of sandstone that suffered recurrent F-T cycles.
It declines exponentially with F-T cycles and porosity increase while growing exponentially with peak stress and elastic modulus increase.
American Psychological Association (APA)
Yu, Songtao& Deng, Junren& Deng, Hongwei& Gao, Feng& Li, Jielin. 2020. Brittle Characteristic and Microstructure of Sandstone under Freezing-Thawing Weathering. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1125538
Modern Language Association (MLA)
Yu, Songtao…[et al.]. Brittle Characteristic and Microstructure of Sandstone under Freezing-Thawing Weathering. Advances in Civil Engineering No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1125538
American Medical Association (AMA)
Yu, Songtao& Deng, Junren& Deng, Hongwei& Gao, Feng& Li, Jielin. Brittle Characteristic and Microstructure of Sandstone under Freezing-Thawing Weathering. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1125538
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1125538