An experimental study on the shear performance of fully encapsulated cable bolts in single shear test

Aziz, Naj and Rasekh, Haleh and Mirzaghorbanali, Ali and Yang, Guanyu and Khaleghparast, Saman and Nemcik, Jan (2018) An experimental study on the shear performance of fully encapsulated cable bolts in single shear test. Rock Mechanics and Rock Engineering. ISSN 0723-2632

Abstract

A set of single shear tests on fully encapsulated cable bolts was carried out using a newly developed and integrated Megabolt single shear apparatus. The instrument is designed to determine the pure shear strength of cable bolts where there is no contact between the host body faces during the shearing process. Eight different types of cable bolt were encapsulated in 40 MPa concrete cylinders, using Stratabinder HS grout. Prior to encapsulation, cable bolts were pretensioned at the desired value using a manual pretensioner. Effects of surface profile, pretension value and debonding on shear strength of cable bolts were investigated. It was found that the shear strength of spiral/indented cable bolts was lower than that of plain cable bolts. Increasing the pretension load decreased the peak shear load of cable bolts. In general, no debonding was observed for spiral/indented cable bolts during shear testing; however, all tested plain cable bolts were debonded.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published online 12 March 2018. Permanent restricted access to ArticleFirst version in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 17 Apr 2018 04:19
Last Modified: 15 May 2018 04:28
Uncontrolled Keywords: cable bolt, single shear testing, shear strength, debonding, pretension load, surface profile
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering
09 Engineering > 0914 Resources Engineering and Extractive Metallurgy > 091402 Geomechanics and Resources Geotechnical Engineering
09 Engineering > 0914 Resources Engineering and Extractive Metallurgy > 091405 Mining Engineering
Socio-Economic Objective: B Economic Development > 85 Energy > 8502 Mining and Extraction of Energy Resources > 850201 Coal Mining and Extraction
Identification Number or DOI: 10.1007/s00603-018-1450-0
URI: http://eprints.usq.edu.au/id/eprint/33890

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