Effect of surface profile on load transfer mechanism of tendons

Rastegarmanesh, Ashkan and Misa, Joel and Mirzaghorbanali, Ali and Aziz, Naj and McDougall, Kevin ORCID: https://orcid.org/0000-0001-6088-1004 (2021) Effect of surface profile on load transfer mechanism of tendons. In: 2021 Resource Operators' Conference, 10-12 Feb 2021, Springfield, Australia.


Abstract

Cable bolts as one of the most common means of ground support in surface and underground projects are attracting more attention due to their advantages over more expensive and cumbersome support elements. Thus, newer cables with new configurations and surface properties are emerging on a regular basis. Conventionally, the performance of cable bolts is studied in two main categories of axial and shear load transfer mechanisms. This paper focuses on the former by developing and proposing an experimental plan to cast light on the effect of surface profile on axial performance of cable bolts. Consequently, 15 representative surface profiles were designed and machined on metal base plates using a CNC machine. Later, these plates were used as moulds for casting cylindrical samples of Stratabinder cementitious grout. Three curing times of one day, 7 days, and 28 days were studied under static compression loading. It was observed that the surface roughness of the samples plays a major role in failure as it inhibits free movement of grout metal interface and inflicts end effect as well as introducing stress concentration point. These two drastically reduce the performance of grout and cause tensile crack growth.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 -)
Date Deposited: 08 Jul 2021 01:32
Last Modified: 08 Jul 2021 04:32
Fields of Research (2008): 09 Engineering > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering
09 Engineering > 0914 Resources Engineering and Extractive Metallurgy > 091402 Geomechanics and Resources Geotechnical Engineering
Fields of Research (2020): 40 ENGINEERING > 4005 Civil engineering > 400502 Civil geotechnical engineering
40 ENGINEERING > 4019 Resources engineering and extractive metallurgy > 401902 Geomechanics and resources geotechnical engineering
URI: http://eprints.usq.edu.au/id/eprint/42650

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