Fall, M, Celestin, JC & Han, FS 2010, 'Polymer modified paste fill for isolation of waste disposal sites', in R Jewell & AB Fourie (eds), Proceedings of the Thirteenth International Seminar on Paste and Thickened Tailings
, Australian Centre for Geomechanics, Perth, pp. 51-60.
Engineering of waste containment facilities such as solid and hazardous waste landfills and mine waste
repositories usually requires the construction of a barrier (liner, cover). The liners are usually needed to
minimise the downward flux of contaminants, while the covers generally limit the accessibility of fluid (e.g.
rain water) to the waste. The barrier will drastically reduce the potential impact of the waste disposal on the
environment (e.g. groundwater, surface water, and ecosystem). In this paper, the results of research on
potential use of polymer modified paste fill (PMP) as barrier material for waste containment facilities are
presented and discussed. The saturated hydraulic conductivity of PMP mixes with different SAP (super
absorbent polymer) contents were investigated at various compaction degrees. Furthermore, the relative
cost and the resistance of the PMP materials to environmental stresses (freeze-thaw and wet-drying cycles)
were evaluated. Valuable and encouraging results were obtained. The results have shown that possibilities
of using PMP as barrier materials appeared very promising owing their good hydraulic performance,
relative good resistance to environmental stresses and the reduced cost from the low admixture amount
necessary to further improve this performance. The cost of a conventional barrier material made using
bentonite (12%) and sand is higher than any of the studied amounts of SAP required to be mixed in the paste
fill to achieve the recommended low conductivity. The benefit realised could be estimated to 98, 96 and 90%
when using PMP material containing 0.10, 0.20 and 0.5% of SAP polymer.
ARK (2003) The ARK Enterprises, Inc. PO box 725, Peculiar, Missouri 6407., viewed January 2010,
Benson, C.H. and Othman, M.A. (1993) Hydraulic conductivity of compacted clay frozen and thawed in-situ, Journal of
Geotechnical Engineering, ASCE, Vol. 119(2), pp. 276–294.
Daniels, J.L., Inyang H. and Iskandar, I.K. (2003) Durability of Boston blue clay in waste containment applications,
Journal of Materials in Civil Engineering, Vol. 15(2), pp. 144–152.
Eigenbrod, K.D. (2003) Self-healing in fractured fine grained soils. Canadian Geotechnical Journal, Vol. 40(2),
Fall, M., Adrien, D., Célestin, J.C., Pokharel, M. and Touré, M. (2009) Saturated hydraulic conductivity of cemented
paste backfill, Journal Minerals Engineering, Vol. 18, pp. 1307–1017.
Fall, M., Célestin, J.C. and Han, F.S. (2009b) Suitability of benonite-paste tailings as engineering barrier material for
mine waste containment facilities, Journal Minerals Engineering, Vol. 22, pp. 840–848.
Fall, M. and Merkel, B. (eds) (2001) Kontamination aus der Nutzung von Ressourcen – Probleme und Lösungen, In
Proceedings First conference of Geo-Environment of the Graduatenkolleg (272), Geowissenschaftliche und
Geotechnische Umweltforschung – TU Freiberg – Germany, Wissen. Mitt. Institut für Geologie.; Heft 18.
20 Beiträge, 200 p.
Kashir, M. and Yanful, E.K. (2001) Hydraulic conductivity of bentonite permeated with acid mine drainage, Canadian
Geotechnical Journal, Vol. 38(5), pp. 1034–1048.
Qiu, Y.J. and Sego, D.C. (2001) Laboratory properties of mine tailings, Canadian Geotechnical Journal, Vol. 38 (1),
Wong, L.C. and Haug, M.D. (1991) Cyclical closed-system freeze-thaw permeability testing of soil liner and cover
materials, Canadian Geotechnical Journal, Vol. 28, pp. 784–793.