Axial Response of Resin Encapsulated Cable Bolts in Monotonic and Cyclic Loading
Article
Article Title | Axial Response of Resin Encapsulated Cable Bolts in Monotonic and Cyclic Loading |
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ERA Journal ID | 4162 |
Article Category | Article |
Authors | Rastegarmanesh, Ashkan, Mirzaghorbanali, Ali, McDougall, Kevin, Aziz, Naj, Anzanpour, Sina, Nourizadeh, Hadi and Moosavi, Mahdi |
Journal Title | Canadian Geotechnical Journal |
Journal Citation | 60 (11) |
Number of Pages | 14 |
Year | 2023 |
Publisher | Canadian Science Publishing |
Place of Publication | Canada |
ISSN | 0008-3674 |
1208-6010 | |
Digital Object Identifier (DOI) | https://doi.org/10.1139/cgj-2022-0379 |
Web Address (URL) | https://cdnsciencepub.com/doi/abs/10.1139/cgj-2022-0379 |
Abstract | The ease of use and the design flexibility of cable bolts have made them a popular choice for rock support. Cable bolts can be encapsulated with cementitious grout or resin. There is a need to better understand the impact of resins on the behaviour of cable bolts under varying load and stress regimes over their long service life. This study reports on 18 large scale resin pull-out tests using a 1000 kN pull-out apparatus. The testing apparatus minimised the rotational movement of the cable at the exit point by using a fully grouted anchor tube. Six cable bolts, ranging from 50 to 100 tonnes in capacity, anchored using a fast-curing urea silica resin, were tested under monotonic and cyclic loading. Each cable type was tested twice in monotonic loading and then the average initial peak load was used to generate a cyclic loading pattern. The study found that the resin product had a relatively low load capacity regardless of the cable type, and that loading type had a minimal impact on the results. The cable diameter had a minor influence on the pull-out results. The resin provided a stiff behaviour and an excellent response to repeated loading. |
Keywords | Cable bolt, axial load transfer mechanisms, resin |
ANZSRC Field of Research 2020 | 400502. Civil geotechnical engineering |
401902. Geomechanics and resources geotechnical engineering | |
Public Notes | The accessible file is the accepted version of the paper. Please refer to the URL for the published version. |
Byline Affiliations | Centre for Future Materials |
University of Southern Queensland | |
University of Wollongong | |
University of Tehran, Iran |
https://research.usq.edu.au/item/yz0v3/axial-response-of-resin-encapsulated-cable-bolts-in-monotonic-and-cyclic-loading
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