Authors: Reid, D; Fourie, AB


Cite As:
Reid, D & Fourie, AB 2015, 'The influence of slurry density on in situ density', in R Jewell & AB Fourie (eds), Proceedings of the 18th International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 95-106.

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Abstract:
Since the beginning of the Paste and Thickened Tailings seminar series, there has been ongoing discussion as to whether an increase in the deposited (initial) slurry density will result in an increased density at depth within an accreting deposit, all else being equal. Despite frequent speculation and theorising, there has been relatively little laboratory data or other evidence presented at the conference series to address this question. To address the above deficiency, a literature review was undertaken to identify experimental programs where the same material was prepared for soil testing from different initial slurry densities. Twelve such studies were identified, of which nine indicate that an increase in initial slurry density resulted in increased density at subsequent significant vertical effective stresses. Case studies presented on three tailings deposits are investigated, to assess the implications of the presented results on the potential for initial slurry density to influence in situ density. For many of the studies reviewed, there appears to be an indication that an increased initial slurry density resulted in an increased in situ density at significant vertical effective stresses. Finally, a series of consolidation tests were undertaken by the authors, wherein four tailings types were prepared from different non-segregating initial slurry densities. For three of these materials, a dependence on situ density was observed, based on changes to initial slurry density. On the basis of the review and experimental data presented in this study, the authors conclude that for at least some materials, initial slurry density can result in an increased density across a wide range of vertical effective stresses.

References:
Al-Tarhouni, M, Simms, P & Sivathayalan, S 2011, ‘Cyclic behaviour of reconstituted and desiccated-rewet thickened gold tailings in simple shear’, Canadian Geotechnical Journal, vol. 48, no. 7, pp. 1044-1060.
Aydilek, AH, Edil, TB & Fox, PJ 2000, ‘Consolidation characteristics of wastewater sludge’, in T Edil & PJ Fox (eds), Geotechnics of Higher Water Content Materials, American Society for Testing and Materials, West Conshohocken, pp. 309-323.
Barrera, S & Riveros, C 2006, ‘Stability of tailings beach slopes’, in RJ Jewell, AB Fourie, S Lawson & P Newman (eds), Proceedings of the Ninth International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 169-180.
Been, K & Jefferies, MG 1985, ‘A state parameter for sand’, Géotechnique, vol. 35, no. 2, pp. 99-112.
Been, K, Crooks, JHA & Jefferies, MG 1988, ‘Interpretation of material state from the CPT in sands and clays’, Penetration testing in the UK, Thomas Telford, London, pp. 89-92.
Berilgen, AA, Bcer, P, Berlgen, M & Ozaydn, KI 2006, ‘Assessment of consolidation behaviour of Golden Horn marine dredged material’, Marine Geores. & Geotech, vol. 24, no. 1, pp. 1-16.
Bonin, MD, Nuth, M, Dagenais, A-M, & Cabral, AR 2014, ‘Experimental study and numerical reproduction of self-weight consolidation behaviour of thickened tailings’, Journal of Geotechnical and Geoenvironmental Engineering, e-first article.
Chang, N, Heymann, G & Clayton, C 2011, ‘The effect of fabric on the behaviour of gold tailings’, Géotechnique, vol. 61, no. 3, pp. 187-197.
Filho, WLDO & Menezes, LP 2012, ‘Consolidation relationships for different ore tailings in Brazil’, Proceedings 16th International Conference on Tailings and Mine Waste, University of British Columbia, Vancouver, pp. 205-216.
Fourie, AB 2012, ‘Perceived and realised benefits of paste and thickened tailings for surface deposition’, in RJ Jewell & AB Fourie (eds), Proceedings of the 16th International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 47 - 46.
Fitton, TG & Seddon, KD 2013, ‘Paste and thickened tailings – myth busting and clarification’, in RJ Jewell, AB Fourie, & A Paterson (eds), Proceedings of the 15th International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 53-64.
Fourie, AB & Papageorgiou, G 2001, ‘Defining an appropriate steady state line for Merriespruit gold tailings’, Canadian Geotechnical Journal, vol. 38 no. 4, pp. 695-706.
Fourie, AB, Blight, GE & Papageorgiou, G 2001, ‘Static liquefaction as a possible explanation for the Merriespruit tailings dam failure’, Canadian Geotechnical Journal, vol. 38, no. 4, pp. 707-719.
Hong, Z-S, Yin, J & Cui, Y-J 2010, ‘Compression behaviour of reconstituted soils and high initial water contents’, Géotechnique, vol. 60, no. 9, pp. 691-700.
Inparajah, D & Wong, RCK n.d., ‘1-D consolidation characteristics of kaolinite-bentonite mixtures with different pore fluid salinity’, Proceedings of the 61st Canadian Geotechnical Conference and 9th Joint CGS/IAH-CNC Groundwater Conference, Canadian Geotechnical Society, Richmond.
Ishihara, K 1993, ‘Thirty third Rankine lecture: liquefaction and flow failure during earthquakes’, Géotechnique, vol. 43, no. 3, pp. 349-415.
Jefferies, MG & Been, K 2000, ‘Implications for critical state theory from isotropic compression of sand’, Géotechnique, vol. 50, no. 4, pp. 419-429.
Knop, A, Kno, LSI, Consoli, NC 2009, ‘Compressibility of a residual soil when percolated by acidic waters’, Proceedings of the 62nd Canadian Geotechnical Conference and 10th Joint CGS/IAH-CNC Groundwater Specialty Conference, Canadian Geotechnical Society, Richmond.
Li, AL, Been, K, Ritchie, D & Welch, D 2009, ‘Stability of large thickened, non-segregated tailings slopes’, in RJ Jewell, AB Fourie, S Barrera & J Wiertz (eds), Proceedings of the 12th International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 301-312.
Martins, FB, Bressani, LA, Coop, MR & Bica, AVD 2001, ‘Some aspects of the compressibility behaviour of a clayey sand’, Canadian Geotechnical Journal, vol. 38, no. 6, pp. 1177-1186.
McPhail, G, Noble, A, Papageorgiou, G & Wilkinson, D 2004, ‘Development and implementation of thickened tailings discharge at Osborne Mine, Queensland, Australia’, Proceedings of the International Seminar on Paste and Thickened Tailings (Paste 2004), Australian Centre for Geomechanics, Perth.
McPhail, G & Brent, C 2007, ‘Osborne high density discharge - an update from 2004’, in AB Fourie & RJ Jewell (eds), Proceedings of Tenth International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 339-350.
Meijer, G & Dijkstra, J 2013, ‘A novel methodology to regain sensitivity of quick clay in a geotechnical centrifuge’, Canadian Geotechnical Journal, vol. 50, no. 9, pp. 995-1000.
Nocilla, A, Coop, MR, Colleselli, F 2006, ‘The mechanics of an Italian silt: an example of ‘transitional' behaviour’’, Géotechnique, vol. 56, no. 4, pp. 261–271.
O'Kelly, BC 2009, ‘Development of a large consolidometer apparatus for testing peats and other highly organic soils’, SUO – Mires and Peat, vol. 60, no. 1-2, pp. 23-36.
Papageorgiou, G 2004, Liquefaction assessment and flume modelling of the Merriespruit gold and Bafokeng platinum tailings, PhD thesis, University of Witwatersrand.
Reid, D & Fourie, AB 2014, ‘Assessing the post-liquefaction shear strength of thickened tailings in the design stage – a review and update’, in RJ Jewell, AB Fourie, PS Wells, D van Zyl (eds), Proceedings of the 17th International Seminar on Paste and Thickened Tailings, Infomine, Inc., Vancouver, pp. 429-444.
Rowe, PW & Barden, L 1966, ‘A new consolidation cell’, Géotechnique, vol. 16, no. 2, pp. 162-170.
Sachan, A & Penumada, D 2007, ‘Effect of microfabric on shear behaviour of kaolin clay’, Journal of Geotechnical and Geoenvironmental Engineering, vol. 133, no. 3, pp. 306-318.
Salfate, ER 2011, Predicting void ratio for surface paste deposited in thin layers, MAppSc. thesis, University of British Columbia.
Sanin, MV, Puebla, H & Eldridge, T 2012, ‘Cyclic behaviour of thickened tailings, Proceedings of the 16th International Conference on Tailings and Mine Waste, University of British Columbia, Vancouver, pp. 503-512.
Sheeran, DE & Krizek, RJ 1971, ‘Preparation of homogenous soils samples by slurry consolidation’, Journal of Materials ASTM, vol. 6, no. 2, pp. 356-373.
Siddiqua, S & Blatz, JA 2009, ‘Evaluation of the impact of pore fluid properties on the 1D consolidation behaviour of clay based sealing material’, Proceedings of the 62nd Canadian Geotechnical Conference and 10th Joint CGS/IAH-CNC Groundwater Specialty Conference, Canadian Geotechnical Society, Richmond.
Shuttle, DA & Cunning, J 2007, ‘Liquefaction potential of silts from CPTu’, Canadian Geotechical Journal, vol. 44 no. 1, pp. 1-19.
Strydom, JH & Williams, AAB 1999, ‘A review of important and interesting technical findings regarding the tailings dam failure at Merriespruit’, Journal of the South African Institution of Civil Engineering, vol. 41, no. 4, pp. 1-9.
Takada, N & Mikasa, M 1986, ‘Determination of consolidation parameters by selfweight consolidation test in centrifuge’, in RN Yong & FC Townsend (eds), Proceedings of Consolidation of Soils: Testing and Evaluation, American Society for Testing and Materials, West Conshohocken, pp. 548-566.
Vaid, YP & Sivathayalan, S 2000, ‘Fundamental factors effecting liquefaction susceptibility of sands’, Canadian Geotechnical Journal, vol. 37, no. 3, pp. 592-606.
Vaughan, PR 1997, ‘Panel discussion: sedimentation of tailings’, Proceedings of the 14th International Conference on Soil Mechanics and Foundation Engineering, vol. 4, A.A. Balkema, Rotterdam, pp. 2561-2562.
Wagener, F 1997, ‘The Merriespruit slimes dam failure: overview and lessons learned’, Journal of the South African Institution of Civil Engineering, vol. 39, no. 3, pp. 11-15.
Wagener, F, Craig, HJ, Blight, GE, McPhail, G, Williams, AAB & Strydom, JH 1998, ‘The Merriespruit tailings dam failure – a review’, Proceedings of the Conference on Tailings and Mine Waste '98, Colorado State University, Fort Collins, pp. 925-952.
Wang, YH & Siu, WK 2006, ‘Structure characteristics and mechanical properties of kaolinite soils. II, effects of structure on mechanical properties’, Canadian Geotechnical Journal, vol. 43, no. 6, pp. 601-617.




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