An Experimental Study on Shear Strength of Cemented Paste Backfill Materials

Yıl 2018, Cilt: 22 Sayı: 1, 45 - 52, 16.04.2018

Eren Kömürlü Ferdi Cihangir Alp Turan Ayhan Kesimal Bayram Erçıkdı

https://doi.org/10.19113/sdufbed.08547

Cited By: 1

Öz

Change in the mechanical parameters of cohesion and internal friction angle with variations in cement content and curing time of cemented paste backfill (CPB) materials was investigated carrying out a series of experimental study. In this scope, shear strength and uniaxial compressive strength (UCS) tests were performed to find out the failure properties of CPB samples. According to the results obtained from this study, a new factor is suggested to use in the Mohr-Coulomb failure criterion to better fit the envelope for CPB materials. As an important issue from this study, strength values of curing CPB specimens were found to dominantly increase because of the improvement in cohesion values instead of internal friction angle. With an increase in cement content, strength values were measured to increase because of the improvement in both internal friction angle and cohesion parameters. Additionally, start of decrease in strength values due to the sulphate attack was found be postponded as another advantage of the increase in cement content.

Anahtar Kelimeler

Shear strength, Mechanical parameters; Cemented paste backfill; Mine fill; Underground mines

Kaynakça

• [1] Kesimal, A., Yilmaz, E., Ercikdi, B. 2004. Evaluation of paste backfill mixtures consisting of sulphide-rich mill tailings and varying cement contents. Cement and Concrete Research, 34, 1817 – 1822.
• [2] Cihangir, F., Akyol, Y. 2016. Mechanical, hydrological and microstructural assessment of the durability of cemented paste backfill containing alkali-activated slag. International Journal of Mining, Reclamation and Environment, DOI: 10.1080/17480930.2016.1242183
• [3] Cihangir, F., Ercikdi, B., Kesimal, A., Turan, A., Deveci, H. 2012. Utilisation of alkali-activated blast furnace slag in paste backfill of high-sulphide mill tailings: Effect of binder type and dosage. Minerals Engineering, 30, 33-43
• [4] Ercikdi, B., Baki, H. and Izki, M. (2013), “Effect of desliming of sulphide-rich mill tailings on the long-term strength of cemented paste backfill”. Journal of Environmental Management, 115, 5-13.
• [5] Komurlu, E., Kesimal, A. 2015. Experimental Study on Sulfide-rich Mine Tailings Usage for Short-term Support Purpose. Geomechanics and Engineering, 9, pp. 195-205
• [6] Yumlu, M. 2008. Barricade pressure monitoring in paste backfill. Mineral Resources Management, 24, 233-244.
• [7] Komurlu, E., Kesimal, A., Ercikdi, B. 2013. An Investigation of Uncemented Paste Backfill Applicability and Consolidation Effects on Inaccuracy of Paste Backfill in situ Strength Estimation by Laboratory Tests. 23th International Congress and Exhibition of Tukey (IMCET 2013), Antalya, Turkey, 1017-1024.
• [8] Yilmaz, T., Ercikdi, B., Karaman, K., Külekçi, G. 2014. Assessment of strength properties of cemented paste backfill by ultrasonic pulse velocity test. Ultrasonics, 54, 1386-1394.
• [9] Komurlu, E., Kesimal, A., Demir, S. 2016. Determination of Indirect (Splitting) Tensile Strength of Cemented Paste Backfill Materials. Geomechanics and Engineering, 10, 775-791.
• [10] Ercikdi, B., Kesimal, A., Cihangir, F., Deveci, H., Alp, I. 2009. Cemented paste backfill of sulphide-rich tailings: Importance of binder type and dosage. Cement & Concrete Composites, 31, 268–274.
• [11] Karaoglu, K., Kucukates, K., Thompson. B.D. 2011. Pastefill Pressure Monitoring at Inmet’s Cayeli Underground Copper and Zinc Mine. Eskikaya Ş. in editor. 22th World Mining Congress & Expo., İstanbul, Turkey, 325-334
• [12] Li, L., Aubertin, M. 2009. A three-dimensional analysis of the total and effective stresses in submerged backfilled stopes. Geotechnical and Geological Engineering, 27, 559-569.
• [13] Li, L., Aubertin, M. 2009. Horizontal Pressure on Barricades for Backfilled Stopes. Part I: Fully Drained Conditions. Canadian Geotechnical Journal, 46, 37-46.
• [14] Komurlu, E., 2012. Effects of Rock and Granular Material Horizontal Stresses on Support Design. Karadeniz Technical University, MSc Thesis, Trabzon, Turkey
• [15] Belem, T., Benzaazoua, M. 2004. An overview on the use of paste backfill technology as a ground support method in cut-and-fill mines. Proceedings of the 5th Int. Symp. on Ground support in Mining and Underground Construction, Perth, Australia, 637 – 650.
• [16] Uzuner, B.A. 2007. Fundamentals of Soil Mechanics. Derya, Trabzon (In Turkish).
• [17] Ghirian, A., Fall, M. 2013. Coupled thermo-hydro-mechanical–chemical behaviour of cemented paste backfill in column experiments. Part I: Physical, hydraulic and thermal processes and characteristics. Engineering Geology, 164, 195–207.
• [18] Komurlu, E., Kesimal, A. 2011. Polymer fibre addition’s effects for shotcrete tunnel support. 10th Regional Rock Mechanics Symposium, Turkish National Society for Rock Mechanics, Ankara, 53-62.
• [19] Ercikdi, B. 2009. Effect of pozzolanic mineral and chemical admixtures on paste backfill performance. PhD Thesis, Karadeniz Technical University, Trabzon, Turkey (In Turkish).
• [20] Komurlu, E., Kesimal, A., Demir, S. 2016. Spraying Membrane Layer Effect on Load Bearing Performance of Concrete Liners. European Rock Mechanics Symposium 2016 (EUROCK 2016), Cappadocia, Turkey, 715-719.
• [21] Cihangir, F., Ercikdi, B., Kesimal, A., Deveci, H., Erdemir, F. 2015. Paste backfill of high-sulphide mill tailings using alkali-activated blast furnace slag: Effect of activator nature, concentration and slag properties. Minerals Engineering, 83, 117-127.
• [22] Yilmaz, E., Kesimal, A., Erçıkdı, B. 2003. Macun dolgu dayanımı ve duraylılığını etkileyen faktörler. Yerbilimleri, 28, 155-169.
• [23] Yilmaz, E., Belem, T., Bussière, B., Benzaazoua, B. 2011. Relationships between microstructural properties and compressive strength of consolidated and unconsolidated cemented paste backfills. Cement & Concrete Composites, 33, 702-715.
• [24] Cihangir, F. 2011. Aktiflestirilmis Yüksek Fırın Cürufunun Macun Dolguda Bağlayıcı Olarak Kullanılabilirliğinin Arastırılması. Karadeniz Technical University, PhD thesis, Trabzon, Turkey
• [25] Benzaazouaa, M.,Marion, P., Picquet, I., Bussiere, B. 2004. The use of pastefill as a solidification and stabilization process for the control of acid mine drainage. Minerals Engineering, 17, 233–243.
• [26] Yang, P., Li, L. 2015. Investigation of the short-term stress distribution in stopes and drifts backfilled with cemented paste backfill. International Journal of Mining Science and Technology, 25, 721-728.
• [27] Guangsheng, L., Li, L., Xiaocong, Y., Lijie, G., 2016. Stability analyses of vertically exposed cemented backfill: A revisit to Mitchell’s physical model tests. International Journal of Mining Science and Technology, 26, 1135-1144.
• [28] Emad, M.Z., Mitri, H., Kelly, C., 2015. State-of-the art review of backfill practices for sublevel stoping system. International Journal of Mining, Reclamation and Environment, 29, 544-556.
• [29] Fall, M., Pokharel, M. 2010. Coupled effects of sulphate and temperature on the strength development of cemented tailings backfills: Portland cement-paste backfill. Cement & Concrete Composites, 32, 819–828.
• [30] Ercikdi, B., Cihangir, F., Kesimal, A., Deveci, H., Alp, I. 2010. Utilization of water-reducing admixtures in cemented paste backfill of sulphide-rich mill tailings. Journal of Hazardous Materials, 179, 940–946.
• [31] Yilmaz, E., Belem, T., Bussière, B., Mbonimpa, M., Benzaazoua, B., 2015. Curing time effect on consolidation behaviour of cemented paste backfill containing different cement types and contents. Construction and Building Materials, 75, 99-111.
• [32] Yumlu, M. 2001. Backfill Practices at Çayeli Mine. Proc. of 17th International Mining Congress and Exhibition of Turkey, Ankara, June, 333-339
• [33] Fall, M., Samb, S.S. 2009. Effect of high temperature on strength and microstructural properties of cemented paste backfill. Fire Safety Journal, 44, 642–651.
• [34] Turan, A. 2011. Macun dolguda kesme dayanım parametrelerinin dolgu dayanımı açısından incelenmesi. Karadeniz Technical University, MSc thesis, Trabzon, Turkey
• [35] Ercikdi, B., Yilmaz, T, Kulekci, G. 2014. Strength and ultrasonic properties of cemented paste backfill. Ultrasonics, 54, 195-204.
• [36] Belem, T., Benzaazoua, M. 2008. Design and Application of Underground Mine Paste Backfill Technology. Geotechnical and Geological Engineering, 26, 147–174.