| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Aziz, Naj
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Topics
Publications (13/13 displayed)
- 2023Investigating shear behaviour of fibreglass rock bolts reinforcing infilled discontinuities for various pretension loadscitations
- 2022Axial Performance of Cementitious Grouted Cable Bolts Under Rotation Constraint Scenarioscitations
- 2021Backfill grouting for mining subsidence prevention
- 2019Shear strength of rock joints under constant normal loading conditions
- 2019Numerical exploration of performance of cable bolts in shear loading
- 2019Strength properties of grout for strata reinforcement
- 2018Mechanical behaviours of grout for strata reinforcement
- 2016Load transfer characteristics of plain and spiral cable bolts tested in new non rotating pull testing apparatus
- 2016A follow up to study the behaviour of cable bolts in shear: experimental study and mathematical modelling
- 2016Mechanical properties of grouts at various curing times
- 2015Strength characteristics of Secura Hollow Groutable Cable Bolts
- 2015An experimental study on the contact surface area of cabled bolted strata
- 2015Strength properties of fibre glass dowels used for strata reinforcement in coal mines
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article
Investigating shear behaviour of fibreglass rock bolts reinforcing infilled discontinuities for various pretension loads
Abstract
In this paper, eight shear tests were carried out utilising a double shear with infilled shear interfaces after determining an appropriate experimental design and modified testing scheme. For this, two rock bolts, 20-tonne and 30-tonne, were tested with modified double shear testing apparatus at different pretension loads. The infilled test scheme was conducted with 5mm thick sandy clay infilled shear interfaces. A 40MPa small aggregate concrete was used for all samples to simulate the host rock. Based on the shear profiles, it was found that all samples followed a three-part failure profile consisting of elastic, strain softening and failure regions. The results of double shear tests revealed that the 20-tonne rock bolt saw a significant overall decrease of approximately 30% in its failure displacement response as opposed to the 30-tonne samples’ which saw a 6% increase. Also, it was concluded that the 30-tonne samples outperformed the 20-tonne rock bolts by up to 30%, irrespective of initial pretension settings. Comparing the physical failure characteristics of the samples found that both the 20-tonne and 30-tonne samples exhibited the same response to increased pretension. As the pretension increased, the angle experienced at the hinge point also increased incrementally. </jats:p>