Experimental Investigation on Biopolymer Strengthening of Mine Tailings
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 142, Issue 12
Abstract
The dry surface strength of mine tailings (MT), or mill tailings, is closely related to their dust resistance. To explore biopolymer stabilization of MT to increase their dust resistance, uniaxial and triaxial compression tests are carried out on dry MT specimens treated with biopolymer solutions of different concentrations. The experimental results show that the elastic modulus, unconfined compressive strength (UCS), cohesion, and friction angle of MT all increase after biopolymer treatment, with higher biopolymer concentration leading to a greater increase. This is primarily because biopolymer treatment leads to aggregation of MT particles, creates bonding between biopolymer and MT particles, and forms a cross-linking network binding the detached particles and filling the voids between them, leading to a denser structure. As expected, the elastic modulus also increases with higher confining pressure.
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References
ASTM. (2007). “Standard test method for unconsolidated-undrained triaxial compression test on cohesive soils.” ASTM D2850, West Conshohocken, PA.
ASTM. (2011). “Standard practice for classification of soils for engineering purposes (unified soil classification system).” ASTM D2487–11, West Conshohocken, PA.
Bea, S. A., Ayora, C., Carrera, J., Saaltink, M. W., and Dold, B. (2010). “Geochemical and environmental controls on the genesis of soluble efflorescent salts in coastal mine tailings deposits: A discussion based on reactive transport modeling.” J. Contam. Hydrol., 111(1–4), 65–82.
Blight, G. E. (2008). “Wind erosion of waste impoundments in arid climates and mitigation of dust pollution.” Waste Manage. Res., 26(6), 523–533.
Cabalar, A. F., and Canakci, H. (2011). “Direct shear tests on sand treated with xanthan gum.” Proc. ICE-Ground Improv., 164(2), 57–64.
Chang, I., and Cho, G.-C. (2012). “Strengthening of Korean residual soil with , , 6-glucan biopolymer.” Constr. Build. Mater., 30, 30–35.
Chang, I., Im, J., Prasidhi, A. K., and Cho, G.-C. (2015). “Effects of xanthan gum biopolymer on soil strengthening.” Constr. Build. Mater., 74, 65–72.
Chang, T. S., and Woods, R. D. (1987). “Effect of confining pressure on shear modulus of cemented sand.” Developments in geotechnical engineering, soil structure interaction, A. S. Cakmak, ed., Elsevier, New York, 193–208.
Chen, R., Lee, I., and Zhang, L. (2015). “Biopolymer stabilization of mine tailings for dust control.” J. Geotech. Geoenviron. Eng., 04014100.
Chen, R., Zhang, L., and Budhu, M. (2013). “Biopolymer stabilization of mine tailings.” J. Geotech. Geoenviron. Eng., 1802–1807.
Chepil, W., and Woodruff, N. (1963). “The physics of wind erosion and its control.” Adv. Agron., 15, 211–302.
Jewell, R. (1998). “An introduction to tailings.” Case studies on tailings management, H. Brehaut and R. Jewell, eds., International Council on Metals and the Environment (ICME), Ottawa, 7–8.
Karimi, S. (1998). “A study of geotechnical applications of biopolymer treated soils with an emphasis on silt.” Ph.D. dissertation, Univ. of Southern California, Los Angeles.
Khatami, H. R., and O’Kelly, B. C. (2013). “Improving mechanical properties of sand using biopolymers.” J. Geotech. Geoenviron. Eng., 1402–1406.
Kim, D., Quinlan, M., and Yen, T. F. (2009). “Encapsulation of lead from hazardous CRT glass wastes using biopolymer cross-linked concrete systems.” Waste Manage. (Oxford), 29(1), 321–328.
Lade, P., and Overton, D. (1989). “Cementation effects in frictional materials.” J. Geotech. Eng., 1373–1387.
Larson, S. L., Newman, J. K., Griggs, C. S., Beverly, M., and Nestler, C. C. (2012). “Biopolymers as an alternative to petroleum-based polymers for soil modification, ESTCP ER-0920: Treatability studies.” U.S. Army Corps of Engineer Research and Development Center, Vicksburg, MS.
McGregor, R. G., and Blowes, D. W. (2002). “The physical, chemical and mineralogical properties of three cemented layers within sulfide-bearing mine tailings.” J. Geochem. Explor., 76(3), 195–207.
Mendez, M. O., and Maier, R. M. (2008). “Phytostabilization of mine tailings in arid and semiarid environments—An emerging remediation technology.” Environ. Health Perspect., 116(3), 278–283.
Piechota, T. C., van Ee, J., Batista, J. R., Stave, K. A., and James, D. (2002). “Potential environmental impacts of dust suppressants: ‘Avoiding another times beach’, an expert panel summary.” U.S. Environmental Protection Agency and the Univ. of Nevada, Las Vegas.
Pierce, J., et al. (2007). “Environmental evaluation of dust stabilizer products.” Environmental Laboratory, U.S. Army Engineer Research and Development Center, Vicksburg, MS.
Rice, M. A., Mullins, C. E., and McEwan, I. K. (1997). “An analysis of soil crust strength in relation to potential abrasion by saltating particles.” Earth Surf. Processes Landforms, 22(9), 869–883.
Rice, M. A., Willetts, B. B., and McEwan, I. K. (1996). “Wind erosion of crusted soil sediments.” Earth Surf. Processes Landforms, 21(3), 279–293.
Schnaid, F., Prietto, P., and Consoli, N. (2001). “Characterization of cemented sand in triaxial compression.” J. Geotech. Geoenviron. Eng., 857–868.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 142 • Issue 12 • December 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jul 13, 2015
Accepted: Apr 27, 2016
Published online: Jul 11, 2016
Published in print: Dec 1, 2016
Discussion open until: Dec 11, 2016
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