The Effects of Installation Procedure on Bond Characteristics of Fully Grouted Rock Bolts

The bond characteristics of fully grouted rockbolts installed in steel tubes were investigated by bolt push tests. Steel tubes were inserted in a mine roadway roof to represent the confinement of rock boreholes. Rockbolts were installed in tubes using the installation technique of Australian undergr...

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Main Authors: Ma, Shuqi, Aziz, Naj, Nemcik, Jan, Mirzaghorbanali, Ali
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2018
Subjects:
Online Access:https://hdl.handle.net/10356/87358
http://hdl.handle.net/10220/44414
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-873582020-03-07T11:43:34Z The Effects of Installation Procedure on Bond Characteristics of Fully Grouted Rock Bolts Ma, Shuqi Aziz, Naj Nemcik, Jan Mirzaghorbanali, Ali School of Civil and Environmental Engineering Fully Grouted Rockbolts Push Tests The bond characteristics of fully grouted rockbolts installed in steel tubes were investigated by bolt push tests. Steel tubes were inserted in a mine roadway roof to represent the confinement of rock boreholes. Rockbolts were installed in tubes using the installation technique of Australian underground mines. These tubes, with rockbolts inside, were retrieved from the field and brought back to the laboratory to be cut into 100-mm sections, which were then push tested. It was found that each bolt section had a distinct load-displacement profile, and that bond strength varied significantly along the bolt length. The factors influencing the bond strength of rockbolts were identified. The influence of the installation procedure on the bond strength of bolts in tubes was investigated. Published version 2018-02-06T08:34:16Z 2019-12-06T16:40:14Z 2018-02-06T08:34:16Z 2019-12-06T16:40:14Z 2017 Journal Article Ma, S., Aziz, N., Nemcik, J., & Mirzaghorbanali, A. (2017). The Effects of Installation Procedure on Bond Characteristics of Fully Grouted Rock Bolts. Geotechnical Testing Journal, 40(5), 846-857. 0149-6115 https://hdl.handle.net/10356/87358 http://hdl.handle.net/10220/44414 10.1520/GTJ20160239 en Geotechnical Testing Journal © 2017 ASTM International. This paper was published in Geotechnical Testing Journal and is made available as an electronic reprint (preprint) with permission of ASTM International. The published version is available at: [http://dx.doi.org/10.1520/GTJ20160239]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 12 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Fully Grouted Rockbolts
Push Tests
spellingShingle Fully Grouted Rockbolts
Push Tests
Ma, Shuqi
Aziz, Naj
Nemcik, Jan
Mirzaghorbanali, Ali
The Effects of Installation Procedure on Bond Characteristics of Fully Grouted Rock Bolts
description The bond characteristics of fully grouted rockbolts installed in steel tubes were investigated by bolt push tests. Steel tubes were inserted in a mine roadway roof to represent the confinement of rock boreholes. Rockbolts were installed in tubes using the installation technique of Australian underground mines. These tubes, with rockbolts inside, were retrieved from the field and brought back to the laboratory to be cut into 100-mm sections, which were then push tested. It was found that each bolt section had a distinct load-displacement profile, and that bond strength varied significantly along the bolt length. The factors influencing the bond strength of rockbolts were identified. The influence of the installation procedure on the bond strength of bolts in tubes was investigated.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Ma, Shuqi
Aziz, Naj
Nemcik, Jan
Mirzaghorbanali, Ali
format Article
author Ma, Shuqi
Aziz, Naj
Nemcik, Jan
Mirzaghorbanali, Ali
author_sort Ma, Shuqi
title The Effects of Installation Procedure on Bond Characteristics of Fully Grouted Rock Bolts
title_short The Effects of Installation Procedure on Bond Characteristics of Fully Grouted Rock Bolts
title_full The Effects of Installation Procedure on Bond Characteristics of Fully Grouted Rock Bolts
title_fullStr The Effects of Installation Procedure on Bond Characteristics of Fully Grouted Rock Bolts
title_full_unstemmed The Effects of Installation Procedure on Bond Characteristics of Fully Grouted Rock Bolts
title_sort effects of installation procedure on bond characteristics of fully grouted rock bolts
publishDate 2018
url https://hdl.handle.net/10356/87358
http://hdl.handle.net/10220/44414
_version_ 1681035171167469568