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A laboratory study of bond failure mechanism in deformed rock bolts using a modified Hoek cell
| Content Provider | Scilit |
|---|---|
| Author | Moosavi, M. Khosravi, A. Jafari, A. |
| Copyright Year | 2020 |
| Description | The main component of the bond capacity in deformed bars (rock bolts) is mechanical interlocking, which after onset of slip, mobilizes the shear strength of the grout against the steel ribs. Similar to any rough interface, the most important factor controlling the shear strength at bolt-grout interface is confining pressure. Many examples exist in which a properly performed bolt at initial stages of installation has failed later due to stress decreases caused by nearby excavations. Due to the importance of confining pressure on bond capacity in deformed bars (rock bolts) an investigation is performed using a modified triaxial Hoek cell to facilitate application of a constant radial confining pressure to a grouted bolt while pulling it axially. During the test, axial load and displacement of the bolt as well as the radial dilation of the grout is recorded using a data acquisition system. In this paper, details of the laboratory test results are presented and discussed and conclusions are made. Book Name: Frontiers of Rock Mechanics and Sustainable Development in the 21st Century |
| Related Links | https://api.taylorfrancis.com/content/chapters/edit/download?identifierName=doi&identifierValue=10.1201/9781003077510-54&type=chapterpdf |
| Ending Page | 242 |
| Page Count | 4 |
| Starting Page | 239 |
| DOI | 10.1201/9781003077510-54 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2020-12-17 |
| Access Restriction | Open |
| Subject Keyword | Book Name: Frontiers of Rock Mechanics and Sustainable Development in the 21st Century Microscopic Research Stress Radial Laboratory Confining |
| Content Type | Text |
| Resource Type | Chapter |
