Dynamic testing of fully encapsulated threaded bar – resin and cement grouted

Authors: Player, JR; Villaescusa, E; Thompson, AG

Paper is not available for download
Contact Us

DOI https://doi.org/10.36487/ACG_rep/1304_16_Player

Cite As:
Player, JR, Villaescusa, E & Thompson, AG 2013, 'Dynamic testing of fully encapsulated threaded bar – resin and cement grouted', in Y Potvin & B Brady (eds), Ground Support 2013: Proceedings of the Seventh International Symposium on Ground Support in Mining and Underground Construction, Australian Centre for Geomechanics, Perth, pp. 247-264, https://doi.org/10.36487/ACG_rep/1304_16_Player

Download citation as:   ris   bibtex   endnote   text   Zotero


Abstract:
The Western Australian School of Mines has been undertaking dynamic testing on fully encapsulated threaded bar at the purpose built Dynamic Test Facility for a 10 year period. Threaded bar includes the full range of solid modified bar geometries specifically known as threadbar, rebar, Gewi bar and continuous rolled thread bar. The dynamic test program quantified reinforcement system performance via dynamic force–displacement, velocity-time and acceleration-time relationships. Peaks of the relationships in conjunction with energy dissipated by the reinforcement system allow ranking and interpretation of a catalogue of results. The performance of the reinforcement systems to dynamic load is controlled by the rate of debonding between the reinforcing element and the encapsulation medium, and the capacity of the reinforcing element to dissipate energy through plastic deformation.

References:
Dieter, G.E. (1961) Mechanical metallurgy, McGraw-Hill International Student Edition, New York, Section 17.5.
Hyett, A., Bawden, W. and Reichardt, R. (1992) The effect of rock mass confinement on the bond strength of fully grouted cable bolts, International Journal of Rock Mechanics and Mining Science & Geomechanics Abstracts, Vol. 29, pp. 503–524.
Malvar, L.J. and Crawford, J.E. (1998) Dynamic increase factors for steel reinforcing bars, in Proceedings Twenty Eighth Department of Defense Explosives Safety Seminar, 18–20 August 1998, Orlando, Florida, Department of Defense Explosives Safety Board, Alexandria.
Player, J.R (2012) Dynamic Testing of Rock Reinforcement Systems, PhD Thesis, Curtin University, 501 p.
Player, J.R., Villaescusa, E. and Thompson, A.G. (2009) Dynamic Testing of Friction Rock Stabilisers, in Proceedings Rock Engineering in Difficult Conditions, 3rd Canada-US Rock Mechanics Symposium and 20th Canadian Rock Mechanics Symposium, Toronto, Canada, Paper 4027.
Player, J.R., Villaescusa, E. and Thompson, A.G. (2008a) Dynamic testing of reinforcement system, in Proceedings 6th International Symposium on Ground Support – Ground Support in Mining and Civil Engineering Construction, T.R. Stacey and D.F. Malan (eds), The Southern African Institute of Mining and Metallurgy, Johannesburg, pp. 597–622.
Player, J.R., Villaescusa, E. and Thompson, A.G. (2008b) An examination of dynamic test facilities, in Proceedings Australian Mining Technology Conference, 16–18 September, The Australasian Institute of Mining and Metallurgy, Melbourne, pp. 349–379.
Ruiz, G., Zhang, X., Tarifa, M., Yu, R.C. and Camara, M. (2009) Fracture Energy of High Strength Concrete under Different Loading Rates, in Anales de Mecánica de la Fractura 26, Vol. 2, pp. 513–518.
Turner, M. and Green, T. (2005) Threadbar bolts in a seismically active, high stress, high yield environment – Otter-Juan Mine, Kambalda, in Proceedings Sixth International Symposium on Rockburst and Seismicity in Mines (RaSiM6), Y. Potvin and M. Hudyma (eds), 9‒11 March 2005, Perth, Australia, Australian Centre for Geomechanics, Perth, pp. 67–74.
Tyler, D.B. and Werner, M. (2004) A case study of ground support improvement at perseverance mine, in Proceedings Fifth International Symposium on Ground Support, Ground Support in Mining and Underground Construction, E. Villaescusa and Y. Potvin (eds), 28‒30 September 2004, Perth, Australia, Balkema, Rotterdam, pp. 53–64.
Windsor, C. and Thompson, A.G. (1993) Rock reinforcement – technology, testing, design and evaluation, in Comprehensive rock engineering – principles practice and projects, J. Hudson, E. Brown, C. Fairhurst and E. Hoek (eds), Pergamon Press, Oxford, Vol. 4, Ch. 16.




© Copyright 2024, Australian Centre for Geomechanics (ACG), The University of Western Australia. All rights reserved.
View copyright/legal information
Please direct any queries or error reports to repository-acg@uwa.edu.au