Failure characterization of fully grouted rock bolts under triaxial testing
Article
Article Title | Failure characterization of fully grouted rock bolts under triaxial testing |
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ERA Journal ID | 201130 |
Article Category | Article |
Authors | Nourizadeh, Hadi, Mirzaghorbanali, Ali, Serati, Mehdi, Mahmoud, Mutaz El-Amin, McDougall, Kevin and Aziz, Naj |
Journal Title | Journal of Rock Mechanics and Geotechnical Engineering |
Journal Citation | 16 (3), pp. 778-789 |
Number of Pages | 12 |
Year | 2024 |
Publisher | Kexue Chubanshe,Science Press |
Elsevier | |
Place of Publication | China |
ISSN | 1674-7755 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jrmge.2023.08.013 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S1674775523002913 |
Abstract | Confining stresses serve as a pivotal determinant in shaping the behavior of grouted rock bolts. Nonetheless, prior investigations have oversimplified the three-dimensional stress state, primarily assuming hydrostatic stress conditions. Under these conditions, it is assumed that the intermediate principal stress (σ2) equals the minimum principal stress (σ3). This assumption overlooks the potential variations in magnitudes of in situ stress conditions along all three directions near an underground opening where a rock bolt is installed. In this study, a series of push tests was meticulously conducted under triaxial conditions. These tests involved applying non-uniform confining stresses (σ2 σ3) to cubic specimens, aiming to unveil the previously overlooked influence of intermediate principal stresses on the strength properties of rock bolts. The results show that as the confining stresses |
Keywords | rock bolts; triaxial tests; push test; bond strength; bolt-grout interface |
Related Output | |
Is part of | Axial load transfer mechanism of rock bolts |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401902. Geomechanics and resources geotechnical engineering |
400502. Civil geotechnical engineering | |
401905. Mining engineering | |
Public Notes | This article is part of a UniSQ Thesis by publication. See Related Output. |
Byline Affiliations | Centre for Future Materials |
School of Engineering | |
University of Queensland | |
School of Surveying and Built Environment | |
University of Wollongong |
https://research.usq.edu.au/item/z320z/failure-characterization-of-fully-grouted-rock-bolts-under-triaxial-testing
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