Coupled Effects of Time and High Temperature on Rheological Properties of Cement Pastes Incorporating Various Superplasticizers
Publication: Journal of Materials in Civil Engineering
Volume 21, Issue 8
Abstract
The time-dependent rheological behavior at high temperature of cement paste incorporating various chemical admixtures is critical for hot-weather concreting applications. This paper investigates the combined effects of temperature and time on the performance of polycarboxylate-, melamine sulfonate- and naphthalene sulfonate-based high-range water-reducing admixtures used to enhance the flow of cement paste. Rheological parameters, including yield stress, plastic viscosity, and thixotropy of cement pastes with a water/binder ratio of 0.38, were measured as a function of the superplasticizer dosage and temperature from from the time of mixing with between successive measurements. The rheological tests were conducted using an advanced shear-stress/shear-strain controlled rheometer. This paper aims at developing a better understanding of the coupled time and temperature effects on the performance of various superplasticizers, and formulating more realistic recommendations for using such admixtures in hot weather. Current technical information on chemical admixtures used in concrete has traditionally been developed in countries with mild climates and is often unreliable when transposed to extreme weather conditions. Thus, the findings of this study should have significant implications in practice. Results indicate that polycarboxylate-based superplasticizers should be used at a dosage close to the saturation in order to ensure adequate rheological behavior at high temperature and prolonged mixing time, while melamine sulfonate- and naphthalene sulfonate-based superplasticizers should be used at dosages beyond the saturation level.
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References
Barners, H. A., Hutton, J. F., and Walters, K. (1989). An introduction to rheology, Elsevier Science, Amsterdam, 115–139.
Berge, O. (1976). “Improving the properties of hot-mixed concrete using retarding concrete admixtures.” Adv. Biochem. Eng./Biotechnol., 73(7), 394–398.
Bonen, D., and Sarkar, S. L. (1995). “The superplasticizer adsorption capacity of cement pastes, pore solution composition, and parameters affecting flow loss.” CRC Crit. Rev. Solid State Mater. Sci., 25(7), 1423–1434.
Brady, J. F., and Bossis, G. (1985). “The rheology of concentrated suspensions of spheres in simple shear flow by numerical simulation.” J. Fluid Mech., 155(2), 105–129.
Coussot, P., Nguyen, Q. D., Huynh, H. T., and Born, D. (2002). “Viscosity bifurcation in thixotropy, yielding fluids.” J. Rheol., 46(3), 573–589.
Cyr, M., Legrand, C., and Mouret, M. (2000). “Study of the shear thickening effect of superplasticizers on the rheological behavior of cement pastes containing or not mineral additives.” CRC Crit. Rev. Solid State Mater. Sci., 30(9), 1477–1483.
Eirich, R. F. (1960). Rheology theory and applications, Academic, New York and London, 205–248.
Ferguson, J., and Kemblowski, Z. (1991). Applied fluid rheology, Elsevier Applied Science, London and New York, 199–231.
Hanehara, S., and Yamada, K. (1999). “Interaction between cement and chemical admixture from the point of cement hydration, absorption behavior of admixture, and paste rheology.” CRC Crit. Rev. Solid State Mater. Sci., 29(8), 1159–1165.
Hewlett, P. C. (1998). Chemistry of cement and concrete, 4th Ed., Wiley, New York, 241–297.
Hoffman, R. L. (1998). “Explanation for the cause of shear thickening in concentrated colloidal suspensions.” J. Rheol., 42(1), 111–123.
Hunter, J. R. (2001). Foundations of colloid science, 2nd Ed., Oxford University Press Inc., New York, 713–785.
Kim, B.-G., Jiang, S., Jolicoeur, C., and Aitcin, P.-C. (2000). “The adsorption behavior of PNS superplasticizer and its relation to fluidity of cement paste.” CRC Crit. Rev. Solid State Mater. Sci., 30(6), 887–893.
Li, Z., Ohkubo, T., and Tanigawa, Y. (2004a). “Theoretical analysis of time-dependence and thixotropy for high fluidity concrete.” J. Mater. Civ. Eng., 16(3), 247–256.
Li, Z., Ohkubo, T., and Tanigawa, Y. (2004b). “Yield model of high fluidity concrete in fresh state.” J. Mater. Civ. Eng., 16(3), 195–201.
Nehdi, M., and Al-Martini, S. (2009). “Coupled effects of high temperature, prolonged mixing time, and chemical admixtures on rheology of fresh concrete.” ACI Mater. J., 106(3), 1–10.
Nehdi, M., and Rahman, M. A. (2004). “Estimating rheological properties of cement pastes using various rheological models for different test geometry, gap and surface friction.” CRC Crit. Rev. Solid State Mater. Sci., 34(11), 1993–2007.
Papo, A., Piani, L., and Ricceri, R. (2002). “Sodium tripolyphosphate and polyphosphate as dispersing agents for kaolin suspensions: Rheology characterization.” Colloids Surf., 201(5), 219–230.
Petit, J., Wirquin, E., and Duthoit, B. (2005). “Influence of temperature on yield value of highly flowable micromortars made with sulfonate-based superplasticizers.” CRC Crit. Rev. Solid State Mater. Sci., 35(3), 256–266.
Petit, J.-Y., Khayat, K., and Wirquin, E. (2006). “Coupled effect of time and temperature on variations of yield value of highly flowable mortar.” CRC Crit. Rev. Solid State Mater. Sci., 36(5), 832–841.
Ramachandran, V. S., Malhotra, V. M., Jolicoeur, C., and Spiratos, N. (1997). “Superplasticizers: Properties and applications in concrete.” Materials technology laboratory, CANMET, natural resources Canada, Natural Resources Canada, Canada Centre for Mineral and Energy Technology (CANMET), Ottawa, Ontario, 43–150.
Rixon, R., and Mailvaganam, N. (1999). Chemical admixtures for concrete, 3rd Ed., E & FN Spon, London, 77–103.
Saak, W. A. (2000). “Characterization and modeling of the rheology of cement paste: With application toward self-flowing materials.” Ph.D. thesis, Univ. of Northwestern, 97–116.
Saak, W. A., Jennings, M. H., and Shah, P. S. (2001). “The influence of wall slip on yield stress and viscoelastic measurements of cement paste.” CRC Crit. Rev. Solid State Mater. Sci., 31(2), 205–212.
Soroka, I., and Ravina, D. (1998). “Hot weather concreting with admixtures.” CRC Crit. Rev. Solid State Mater. Sci.,44 20(4), 129–136.
Tattersall, G. H., and Banfill, P. F. G. (1983). The rheology of fresh concrete, Pitman Advanced Publishing Program, London, 27–52, 254–305.
Yamada, K., Hanehara, S., and Honma, K. (1998). “The effect of naphthalene sulphonate type and polycarboxylate type superplasticizers on the fluidity of belite-rich cement concrete.” Proc., Inter. Workshop on Self-Compacting Concrete, Kochi Univ. of Technology, Kochi, Japan, 201–210.
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© 2009 ASCE.
History
Received: May 24, 2007
Accepted: Feb 18, 2009
Published online: Jul 15, 2009
Published in print: Aug 2009
Notes
Note. Associate Editor: Christopher K. Y. Leung
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