Modeling Electrokinetic Nanoparticle Penetration for Permeability Reduction of Hardened Cement Paste
Publication: Journal of Materials in Civil Engineering
Volume 20, Issue 11
Abstract
Electrokinetic nanoparticle treatments have been demonstrated to reduce the permeability of hardened cement paste by orders of magnitude. The origin of this approach stems from the tendency of particles to flocculate and precipitate when they make contact with pore fluid. The feasibility of a given treatment application is dependent upon the transport properties of the particle and of the cement paste. It is theorized that this process causes particles to fill the initial sections of pores to a large extent before further penetration is achieved. In this work a model was developed to predict the rate of penetration of a given nanoparticle treatment using the principle of superposition to combine the influence of electrophoresis, electroosmosis, and hydraulic flow. The model finds the penetration depth by dividing the net transport rate by the effective number of degrees of freedom in the pore system and multiplying by the treatment time. The model was found to compare well with experimental results, both for predicting if a penetration is possible and for predicting the extent of penetration.
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References
Aligizaki, K. K. (2006). Pore structure of cement-based materials, testing interpretation, and requirements, Taylor and Francis, New York, 13.
Bazant, Z., Sener, S., and Kim, J. (1987). “Effect of cracking on drying permeability and diffusivity of concrete.” ACI Mater. J., 84(4), 351–357.
Bockris, J. O. M., and Reddy, A. K. N. (1976). Modern electrochemistry, Vols. 1 and 2, Plenum, New York.
Cardenas, H. (2002). “Investigation of reactive electrokinetic processes for permeability reduction in hardened cement paste.” Ph.D. thesis, Univ. of Illinois, Urbana-Champaign, Ill.
Cardenas, H., Paturi, P., and Dubasi, P. (2007). “Electrokinetic treatment for freezing and thawing damage mitigation within limestone.” Proc., Sustainable Construction Materials and Technologies, Coventry, U.K., Taylor and Francis, London, 603–609.
Cardenas, H., and Struble, L. (2006). “Electrokinetic nanoparticle treatment of hardened cement paste for reduction of permeability.” J. Mater. Civ. Eng., 8(4), 554–560.
Darcy, H. (1856). “Determination of the law of the flow of water through sand.” Les fontaines publiques de la ville de Dijon, Appendix, Victor Dalmont, Paris, 590–594.
Finney, D. (1998). “Electro-osmosis dries wet areas.” Cutting edge, USACERL, Champaign, Ill.
Fox Industries. (2002). “Silane penetrating sealers.” Data sheet, Baltimore.
Garboczi, E. J. (1990). “Permeability, diffusivity, and microstructural parameters: A critical review.” Cem. Concr. Res., 20(4), 591–601.
Glasstone, S. (1946). Textbook of physical chemistry, 6th Ed., Van Norstrand, New York.
Gratwick, R. T. (1974). Dampness in buildings, Wiley, New York.
Hall, C., and Hoff, W. D. (2002). Water transport in brick, stone and concrete, Taylor and Francis, New York, 24.
Harman, R. (1925). Aqueous solutions of sodium silicates, Vol. 25, The Ramsay Laboratories of Physical and Inorganic Chemistry, University College Press, London, 1158–1165.
Hobbs, D. W., and Gutteridge, W. A. (1979). “Particle size and its influence upon the expansion caused by the alkali-silica reaction.” Mag. Concrete Res., 31(109), 235–242.
Hock, V., McInerney, M. K., and Kirstein, E. (1998). “Demonstration of electro-osmotic pulse technology for groundwater intrusion control in concrete structures.” U.S. Army Facilities Engineering Applications Program Technical Rep. No. 98/86, U.S. Army Construction Engineering Research Lab., Champaign, Ill., 19.
Kasselouri, V., Kouloumbi, N., and Thomopoulos, Th. (2001). “Performance of silica fume-calcium hydroxide mixture as a repair material.” Cem. Concr. Compos., 23(1), 103–110.
Mitchell, J. K. (1976). Fundamentals of soil behavior, Wiley, New York.
Otsuki, N., Hisada, M., Ryu, J., and Banshoya, E. (1999). “Rehabilitation of concrete cracks by electrodeposition.” Concr. Int., 21(3), 58–63.
Radonseal. (2008). “Silicate based sealers.” Data sheet, Shelton, Conn.
Ryu, J., and Otsuki, N. (2002). “Crack closure of reinforced concrete by electrodeposition technique.” Cem. Concr. Res., 32(1), 159–164.
Samaha, H. R., and Hover, K. C. (1992). “Influence of microcracking on the mass transport properties of concrete.” ACI Mater. J., 89(4), 416–424.
Sohn, D., and Mason, T. (1998). “Electrically induced microstructural changes in Portland cement paste.” Adv. Cem. Based Mater., 7(3/4), 81–88.
Taylor, H. F. W. (1997). Cement chemistry, 2nd Ed., Thomas Telford, London.
Xypex. (1983). “Concrete waterproofing by crystallization.” Data sheet 005, Richmond, B.C., Canada.
Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 20 • Issue 11 • November 2008
Pages: 683 - 691
Copyright
© 2008 ASCE.
History
Received: Jun 23, 2006
Accepted: Oct 8, 2007
Published online: Nov 1, 2008
Published in print: Nov 2008
Notes
Note. Associate Editor: Kolluru V. Subramanian
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