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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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Nemcik, Jan
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Topics
Publications (7/7 displayed)
- 2019Numerical exploration of performance of cable bolts in shear loading
- 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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document
Load transfer characteristics of plain and spiral cable bolts tested in new non rotating pull testing apparatus
Abstract
The load transfer mechanisms of cable bolts differ from normal rebar bolts. Cable bolts used in mines are basically steel strands with different constructions depending on the number of wires or elements and the way that these elements are laid. Tendon bolts (rebar and cable) are normallyevaluated for strength and load transfer properties. The strength of tendon can be carried out by tensilefailure tests, while the load transfer strength is evaluated by pull and shear strength tests. ShortEncapsulation Pull Testing (SEPT) is used to study of the load transfer capacities of tendons, and canbe undertaken both in the laboratory and in situ. A new apparatus known as Minova Axially SplitEmbedment Apparatus (MASEA) was used to study load-displacement characteristics of smooth versusspiral profile cable bolts. Minova Stratabinder grout was used for encapsulating 400 mm long 19 wire 22mm diameter superstrand cable in the embedment units. The anchorage of the cable on two sides of theembedment apparatus were intentionally installed at different lengths, to allow the cable to be pulled outfrom one side of the anchorage. The spiral wire strand cable bolts achieved higher peak pull-out load atminimum displacement in comparison with smooth surface wire strand. The peak pull out force increased with the age of encapsulation grout. The MASEA was easier to assemble and test at a short period of time, thus allowing quick and repeated tests to be undertaken.