Scholarly record
AN INVESTIGATION OF THE STRENGTH AND DEFORMATION PROPERTIES OF PASTE BACKFILL MIXTURES
Abstract
Paste backfill is composed of a mixture of mine tailings, process and/or fresh water for the desired solid-water consistency and hydraulic binder to ensure a target mechanical resistance. This paper presents some studies undertaken on the strength development and deformation behaviour of paste backfill mixtures made from a Turkish zinc mine tailings. A series of laboratory experiments was conducted to determine the strength and deformation properties of paste mixtures with binder content ranging from 4 to 7 wt\% and slump values of 6 to 7" at short term curing time (28-day). The physical, chemical, mineralogical and rheological properties of tailing samples were first determined. Unconfined compression tests (UCS) were then performed on the paste backfill mixtures after 28-day curing time and the stress-strain curves were recorded to analyse the sample deformation characteristics. It was found that a paste cylinder with 7 wt\% cement and 6.0" slump had a highest compressive strength of 868 kPa after 28 days and the corresponding tangent and secant modulus of elasticity are 83.1 and 58.3 MPa, respectively. This study revealed that UCS values and deformation modulus of paste backfills are mainly controlled by the cement and binder content used in mixture.
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References31
Hassani, F., Archibald, J., 1998 (Editors). Mine Backfill. CD-Rom, Canadian Institute of Mine, Metallurgy and Petroleum, Montreal, Canada, 308 pp.
Benzaazoua, M., Fall, M., Belem, T.,
2004. A contribution to understanding the hardening process of cemented pastefill. Min. Eng. 17 (2) 141-152.
Brackebusch, F.W.,
1994. Basics of paste backfill systems. Min. Eng. 46 (10) 1175-1178.
Levens, R.L., Marcy, A.D., Boldt, C.M.K. (1996). Environmental impacts of cemented mine waste backfill. RI9599, United States Bureau of Mines, 23 p.
Landriault, D.A.,
1995. Paste backfill mix design for Canadian underground hard rock mining. In: Proceedings of the 97th Annual General Meeting of the CIM,
Halifax, Nova Scotia, Canada.
Yilmaz, E.,
2003. Investigation of the strength characteristics of the cemented paste backfill samples prepared for sulphide-bearing mine tailings. M.Sc.
Thesis, Department of Mining Engineering, Karadeniz Technical University, Trabzon,
Turkey, 117 p (in Turkish).
Kesimal A., Alp, I., Yilmaz, E., Ercikdi, B.,
2002. Optimization of test results obtained from different size slumps with varying cement contents for Cayeli Mine`s clastic and spec ore tailings, Revolving Fund Project, Final report, Karadeniz Technical University, Mining Engineering Department, Trabzon, 60 p.
Pierce, M., Bawden W. and Paynter, J.,
1998. Laboratory testing and stability analysis of paste backfill at the Golden Giant Mine. MINEFILL’98; Proceedings of the 6th International Symposium on Mining with Backfill, Australasian Institute of Mining and Metallurgy, Australia, 14-16 April, 159-165.
Belem, T., Benzaazoua, M., Bussière, B.,
2000. Mechanical behaviour of cemented paste backfill. Proceedings of the Canadian Geotechnical Society Conference Geotechnical Engineering at the Dawn of the Third Millennium, 15-18 October,
Montreal, Canada, Vol. 1, 373-380.
Rankine, R.M., Rankine, K.J., Sivakugan, N., Karunasena, W., Bloss, M.L.,
2001. Geotechnical characterization and stability analysis of BHP Cannington paste Istanbul Turkey, 1241-1244.
Ercikdi, B., Kesimal, A., Yilmaz, E., Deveci, H.,
2003. Effect of desliming on the strength of paste backfill. Proceedings of the X Balkan Mineral Processing
Congress, Varna, Bulgaria, 15-20 June, 850-857.
Aubertin, M., Li, L., Arnoldi, S., Belem, T., Bussiere, B., Benzaazoua, M., Simon, R.,
2003. Interaction between backfill and rock mass in narrow stopes. Soil and Rock America 2003, Proceedings on the 12th Panamerican Conference on Soil Mechanics and Geotechnical Engineering and 39th U.S. Rock Mechanics Symposium,
Boston, Massachusetts, USA. Vol. 1, Verlag Gückauf GmbH (VGE), Essen, 1157-1164.
Deveci, H., Yilmaz, E., Yilmaz, A.O., Kesimal, A., Alp, I.,
2003. Investigation of the potential use of the quarry product from Tashane-Terme as trass raw material in cement industry. International Symposium on Industrial Minerals and Building Stones, Istanbul, Turkey, 15-18 September, 553-559.
1992. Cement-trass cement. Turkish Standards Institution, Ankara, Turkey (in Turkish).
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