Investigating the axial and shear performance of fiberglass rock boltss
Paper
Paper/Presentation Title | Investigating the axial and shear performance of fiberglass rock boltss |
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Presentation Type | Paper |
Authors | Entezam, Shima, Jodeiri Shokri, Behshad, Nourizadeh, Hadi, Gregor, Peter, Entezam, Alireza, Mirzaghorbanali, Ali, McDougall, Kevin, Karunasena, Karu and Aziz, Naj |
Editors | Aziz, N. and Mirzaghorbanali, A. |
Journal or Proceedings Title | Proceedings of the 2024 Resource Operators Conference |
Journal Citation | pp. 186-194 |
Number of Pages | 9 |
Year | 2024 |
Publisher | University of Wollongong |
Place of Publication | Australia |
ISBN | 9781741283969 |
9781741283952 | |
Web Address (URL) of Paper | https://ro.uow.edu.au/coal/912/ |
Web Address (URL) of Conference Proceedings | https://ro.uow.edu.au/coal/ |
Conference/Event | 2024 Resource Operators Conference (ROC2024) |
Event Details | 2024 Resource Operators Conference (ROC2024) Delivery In person Event Date 13 to end of 16 Feb 2024 Event Location Wollongong, Australia Event Venue University of Wollongong |
Abstract | This paper primarily evaluates the axial and shear performance of fully grouted fibreglass-reinforced polymer (FRP) rock bolting systems. For this purpose, a FRP rock bolt with a diameter of 20 mm was selected for examination. To evaluate the axial performance, several samples with a double-embedment length of 150 mm and an exposed length of 200 mm were cast using an 80 MPa cementitious grout and cured for 28 days. Pull-out tests were then conducted at a controlled rate of 1 mm/min with a 1000 KN MTS apparatus to determine the pull-out performance of the FRP bolts. Furthermore, a comparative analysis involved testing a 20 mm fully grouted steel rock bolt with a 150 mm encapsulation length, was conducted. The results indicated that the axial bearing capacity of the FRP bolts varied between 84 KN and 110 KN, while the steel bar exhibited a capacity of 144.5 KN. The load-displacement curves analysis showed that steel rebar rock bolts absorb more energy during the debonding process compared to the FRP bolts. Along with pull-out tests, the shear behaviour of the FRP bolts was also determined by conducting single and double-shearing tests. With this aim, after casting the concrete blocks in a double-shearing box, three different pretension values were applied to the samples. The results showed that pretension values had a direct impact on the displacement values, while they did not have a direct impact on the peak shear force values. Additionally, the tensile properties of the FRP and the steel bolts showed a different behaviour in the uniaxial tensile test. |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401902. Geomechanics and resources geotechnical engineering |
400502. Civil geotechnical engineering | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions, but may be accessed online. Please see the link in the URL field. |
Byline Affiliations | School of Surveying and Built Environment |
School of Engineering | |
Centre for Future Materials | |
University of Wollongong |
https://research.usq.edu.au/item/z7976/investigating-the-axial-and-shear-performance-of-fiberglass-rock-boltss
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