Yin, S, Shao, Y, Wu, A, Rao, Y & Chen, X 2017, 'Deformation behaviors of cemented backfill using sulphide-content tailings', in A Wu & R Jewell (eds), Paste 2017: Proceedings of the 20th International Seminar on Paste and Thickened Tailings
, University of Science and Technology Beijing, Beijing, pp. 315-327, https://doi.org/10.36487/ACG_rep/1752_35_Yin
The deformation properties of cemented tailings backfill (CTB), especially prepared from sulphidic tailings, are valuable for the estimation of design parameters for underground stope filling as well as for numerical simulation. In this paper, the effect of curing time, sulphur content, cement dosage and solids concentration on the free expansion ratio of CTB specimens was investigated using an invented lab apparatus called “free expansion measuring instrument”. The backfill recipe (sulphur content, binder dosage and solids concentration) and curing days had significant influences on the expansion performance of the CTB. The results indicated that with the change of sulphides, the free expansion ratio (FER) showed no obvious growth at the curing of 28 days. However, after the curing of 120 days, FER increased from 4.96% (S: 4%) to 9.61% (S: 20%). As the solids concentration increased, the FER also rised. And this growth was distinctive only when the solids concentration is relatively high (65~75%) and at the long-term curing time (120 days). The proportions of binder and the obtained FER clearly show a sub-linear and proportional relationship. Increasing the amount of binder (8~16%) could not restrict the increment of expansion ratio, and ultimately the CTB specimens would generate cracks and collapse.
Argane, R., Benzaazoua, M., Hakkou, R. and Bouamrane, A. 2015, ‘Reuse of base-metal tailings as aggregates for rendering mortars: Assessment of immobilization performances and environmental behavior’, Construction and Building Materials, vol.96, pp.296-306.
ASTM, 2011, ‘Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)’, D2487-11.
ASTM, 2012, ‘Standard Test Method for Slump of Hydraulic-Cement Concrete’. In: Annual book of ASTM (American Society of Testing Material) Standards, C142/C143M-12.
Benzaazoua, M., Bussière, B., Demers, I., Aubertin, M., Éliane Fried, and Blier, A. 2008, ‘Integrated mine tailings management by combining environmental desulphurization and cemented paste backfill: Application to mine Doyon, Quebec, Canada’, Minerals Engineering, vol. 21, no.4, pp. 330-340.
Benzaazoua, M., Belem, T. and Bussière, B. 2002, ‘Chemical factors that influence the performance of mine sulphidic paste backfill’. Cement and Concrete Research, vol. 32, no.7, pp. 1133 - 1144.
Benzaazoua, M., Fall, M. and Belem, T. 2004, ‘A contribution to understanding the hardening process of cemented pastefill’, Minerals Engineering, vol. 17, no.2, pp. 141-152.
Benzaazoua, M., Ouellet, J., Servant, S., Newman, P. and Verburg, R. 1999, ‘Cementitious backfill with high sulfur content Physical, chemical, and mineralogical characterization’, Cement and Concrete Research, vol. 29, no.5, pp. 719-725.
Chen, T.C., Yin, W.Q. and Ifju, P.G. 2010, ‘Investigation of shrinkage behaviour and cracks in cement paste using moiré interferometry’, The Journal of Strain Analysis for Engineering Design, vol. 45, no.1, pp. 19-31.
China, M.O.W.R. 1999, ‘Specification of soil test’, China Industry Standard SL237-1999, Beijing.
China, T.S.B.O. 1999, ‘Standard for soil test method’, China Standard GB/T 50123-1999, Beijing.
Cui, L. and Fall, M. 2016, ‘Mechanical and thermal properties of cemented tailings materials at early ages: Influence of initial temperature, curing stress and drainage conditions’, Construction and Building Materials, vol. 125, pp. 553-563.
Cui, L. and Fall, M. 2017, ‘Multiphysics modeling of arching effects in fill mass’, Computers and Geotechnics, vol. 83, pp. 114-131.
Deng, D., Han, H., Wang, L., Yang, Y. and He, Y. 2012, ‘Analysis on Bleeding and Setting Performance of Filling Slurry’, Mining Research and Development, vol. 32, no.02, pp. 15-17.
EN, T. 2002, ‘Methods of testing cement. part 2’. Chemical analysis of cement.
Ercikdi, B., Cihangir, F., Kesimal, A., Deveci, H. and Alp, I. 2010, ‘Effect of natural pozzolans as mineral admixture on the performance of cemented-paste backfill of sulphide-rich tailings’, Waste Management and Research, vol. 28, no.5, pp. 430-435.
Ercikdi, B., Cihangir, F., Kesimal, A., Deveci, H. and Alp, İ. 2009, ‘Utilization of industrial waste products as pozzolanic material in cemented paste backfill of high sulphide mill tailings’, Journal of Hazardous Materials, vol. 168, no.2-3, pp. 848-856.
Ercikdi, B., Cihangir, F., Kesimal, A., Deveci, H. and Alp, İ. 2010, ‘Utilization of water-reducing admixtures in cemented paste backfill of sulphide-rich mill tailings’, Journal of Hazardous Materials, vol. 179, no.1-3, pp. 940-946.
Ercikdi, B., Kesimal, A., Cihangir, F., Deveci, H. and Alp, İ. 2009, 'Cemented paste backfill of sulphide-rich tailings: Importance of binder type and dosage’, Cement and Concrete Composites, vol. 31, no.4, pp. 268-274.
Ercikdi, B., Külekci, G. and Yılmaz, T. 2015, ‘Utilization of granulated marble wastes and waste bricks as mineral admixture in cemented paste backfill of sulphide-rich tailings’, Construction and Building Materials, vol. 93, pp. 573-583.
Fahey, M., Helinski, M. and Fourie, A. 2009, ‘Some aspects of the mechanics of arching in backfilled stopes’, Canadian Geotechnical Journal, vol. 46, no.11, pp. 1322-1336.
Fall, M. and Benzaazoua, M. 2005, ‘Modeling the effect of sulphate on strength development of paste backfill and binder mixture optimization’, Cement and Concrete Research, vol. 35, no.2, pp. 301-314.
Fall, M., Benzaazoua, M. and Saa, E.G. 2008, ‘Mix proportioning of underground cemented tailings backfill’, Tunnelling and Underground Space Technology, vol. 23, no.1, pp. 80-90.
Fall, M., Célestin, J.C., Pokharel, M. and Touré, M. 2010, ‘A contribution to understanding the effects of curing temperature on the mechanical properties of mine cemented tailings backfill’, Engineering Geology, vol. 114, no.3-4, pp. 397-413.
Guo, S. and Wei, T. 2016, ‘Cost-effective energy saving measures based on BIM technology, pp. Case study at National Taiwan University’, Energy and Buildings, vol. 127, pp. 433-441.
Huang, L., Wang, H. and Wei, C. 2016, ‘Engineering properties of controlled low strength desulfurization slags (CLSDS)’, Construction and Building Materials, vol. 115, pp. 6-12.
Ke, X., Hou, H., Zhou, M., Wang, Y. and Zhou, X. 2015, ‘Effect of particle gradation on properties of fresh and hardened cemented paste backfill’, Construction and Building Materials, vol. 96, pp. 378-382.
Kesimal, A., Yilmaz, E. and Ercikdi, B. 2004, ‘Evaluation of paste backfill mixtures consisting of sulphide-rich mill tailings and varying cement contents’, Cement and Concrete Research, vol. 34, no.10, pp. 1817-1822.
Kesimal, A., Yilmaz, E., Ercikdi, B., Alp, I. and Deveci, H. 2005, ‘Effect of properties of tailings and binder on the short-and long-term strength and stability of cemented paste backfill’, Materials Letters, vol. 59, no.28, pp. 3703-3709.
Kiventerä, J. et al. 2016, ‘Utilization of sulphidic tailings from gold mine as a raw material in geopolymerization’, International Journal of Mineral Processing, vol. 149, pp. 104-110.
Koupouli, N.J.F., Belem, T., Rivard, P. and Effenguet, H. 2016, ‘Direct shear tests on cemented paste backfill–rock wall and cemented paste backfill–backfill interfaces’, Journal of Rock Mechanics and Geotechnical Engineering, vol. 8, no.4, pp. 472-479.
Li, W. and Fall, M. 2016, ‘Sulphate effect on the early age strength and self-desiccation of cemented paste backfill’, Construction and Building Materials, vol. 106, pp. 296-304.
Nason, P., Johnson, R.H., Neuschütz, C., Alakangas, L. and Öhlander, B. 2014, ‘Alternative waste residue materials for passive in situ prevention of sulfide-mine tailings oxidation: A field evaluation’, Journal of Hazardous Materials, vol. 267, pp. 245-254.
Pokharel, M. and Fall, M. 2013, ‘Combined influence of sulphate and temperature on the saturated hydraulic conductivity of hardened cemented paste backfill’, Cement and Concrete Composites, vol. 38, pp. 21-28.
Sun, W., Hou, K., Yang, Z. and Wen, Y. 2017, ‘X-ray CT three-dimensional reconstruction and discrete element analysis of the cement paste backfill pore structure under uniaxial compression’, Construction and Building Materials, vol. 138, pp. 69-78.
Tariq, A. and Yanful, E.K. 2013, ‘A review of binders used in cemented paste tailings for underground and surface disposal practices’, Journal of Environmental Management, vol. 131, pp. 138-149.
Wu, D., Hou, Y., Deng, T., Chen, Y. and Zhao, X. 2017, ‘Thermal, hydraulic and mechanical performances of cemented coal gangue-fly ash backfill’, International Journal of Mineral Processing, vol. 162, pp. 12-18.
Yilmaz, E., Belem, T. and Benzaazoua, M. 2015a, ‘Specimen size effect on strength behavior of cemented paste backfills subjected to different placement conditions’, Engineering Geology, vol. 185, pp. 52-62.
Yilmaz, E., Belem, T., Bussière, B., Mbonimpa, M. and Benzaazoua, M. 2015b, ‘Curing time effect on consolidation behaviour of cemented paste backfill containing different cement types and contents’, Construction and Building Materials, vol. 75, pp. 99-111.
Yin, S., Wu, A., Hu, K., Wang, Y. and Zhang, Y. 2012, ‘The effect of solid components on the rheological and mechanical properties of cemented paste backfill’, Minerals Engineering, vol.35, pp. 61-66.