Effect of Moisture Content on Bursting Liability of Sandstone due to Freeze-Thaw Action
Joint Authors
Ma, Depeng
Li, Kesheng
Li, Maotong
Liu, Chuanxiao
Zhang, Deng
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-10-01
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Moisture content (MC) and freeze-thaw (F-T) process have an important influence on the mechanical properties of rock and its rockburst tendency in the cold region.
In addition, uniaxial compressive strength (UCS) of rock is of great importance in evaluating weathering durability, frost resistance, and bursting liability of rock.
In this study, the UCS of rock and bursting liability index of rock including elastic energy index (WET), impact energy index (WCF), elastic strain energy index (ES), and modified values of brittleness index (BIM) were measured by laboratory tests.
These tests were implemented in six different MC (0, 0.58, 1.06, 1.82, 2.43, and 2.80%) and 20 F-T cycles.
The relationship between rock mechanical properties, bursting liability of rock, and MC after freeze-thaw damage was established, and the control mechanism of moisture content on mechanical properties and rockburst tendency of rocks in cold regions was revealed.
Uniaxial compressive test results showed that the UCS of rock decreases significantly with the increase of MC.
Under the action of F-T cycles, WET, WCF, and ES decrease with the increase of MC, and BIM of rock increases gradually.
This indicates that the rockburst tendency of sandstone decreases with the increase of MC.
To calculate WET, WCF, ES, and BIM of sandstone samples, new empirical equations were established and put forward under different MC after 20 F-T cycles.
American Psychological Association (APA)
Li, Kesheng& Li, Maotong& Zhang, Deng& Liu, Chuanxiao& Ma, Depeng. 2020. Effect of Moisture Content on Bursting Liability of Sandstone due to Freeze-Thaw Action. Shock and Vibration،Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1212781
Modern Language Association (MLA)
Li, Kesheng…[et al.]. Effect of Moisture Content on Bursting Liability of Sandstone due to Freeze-Thaw Action. Shock and Vibration No. 2020 (2020), pp.1-10.
https://search.emarefa.net/detail/BIM-1212781
American Medical Association (AMA)
Li, Kesheng& Li, Maotong& Zhang, Deng& Liu, Chuanxiao& Ma, Depeng. Effect of Moisture Content on Bursting Liability of Sandstone due to Freeze-Thaw Action. Shock and Vibration. 2020. Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1212781
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1212781