Electrosteric repulsion induced by superplasticizers between cement particles -an overlooked mechanism?

American Concrete Institute, ACI Special Publication

Volumn SP-195, Issue , 2000, Pages 29-42

  Flatt, Robert J ^a   Houst, Yves F ^b   Bowen, Paul ^c   Hofmann, Heinrich ^d  

^a EPFL   (Switzerland)

^b Cement Group of the Powder Technology Laboratory

^c UNIVERSITY OF CAMBRIDGE   (United Kingdom)

^d Materials Science Department of the Epfl   (Switzerland)

Author keywords

Dispersion mechanisms; Electrostatic repulsion; Steric repulsion; Superplasticizers

Indexed keywords

CEMENTS; CONCRETE ADDITIVES; CONCRETE MIXTURES; ELECTROSTATICS; POLYELECTROLYTES;

DISPERSION MECHANISMS; ELECTROSTATIC CHARGES; ELECTROSTATIC CONTRIBUTIONS; ELECTROSTERIC REPULSION; INTERACTION ENERGIES; INTERPARTICLE FORCE; POLYMER ADSORPTION; SUPERPLASTICIZERS;

CEMENT INDUSTRY;

EID: 84903077914     PISSN: 01932527     EISSN: None     Source Type: Conference Proceeding    
DOI: None     Document Type: Conference Paper

References (14)

1. Ai"tcin, P.-C., Jolicoeur, C., MacGregor, J.G., « Superplasticizers: How They Work and Why They Occasionally Don't» , Concrete International, Vol. 16, No 5, 1994, pp. 45-52.
2. Fernon V., Vichot A., Le Goanvic N., Colombet P., Corazza F. and Costa U. « Interaction between portland cement hydrates and polynaphtalene sulfonates », Proceedings of the 5th Canmet/ACI International Conference on superplasticizers and Other Chemical Admixtures in Concrete (editor: Malhotra V .M.), American Concrete Institute, Detroit, SP-173, 1997, pp. 225-248.
3. Sakai E. and Daimon M. « Dispersion Mechanisms of Alite Stabilized by Superplasticizers Containing Polyethylene Oxide Graft Chains », Proceedings of the 5th Can met/ACI International Conference on Superplasticizters and Other Chemical Admixtures in Concrete (editor: Malhotra V.M.), American Concrete Institute, Detroit, SP-173, 1997, pp. 187-202.
4. Yoshioka K., Sakai E. and Daimon M. « Role of steric hindrance in the performance of superplasticizers in concrete », Journal of the American Ceramic Society, vol. 80, No. 10, 1997, pp. 2667-2671.
5. Uchikawa H., Hanehara S. and Sawaki D. « The role of steric repulsive force in the dispersion of cement particles in fresh paste prepared with organic admixtures», Cement and Concrete Research, vol. 27, No.1, 1997, pp. 37-50.
6. Neubauer C.M., Yang M. and Jennings H.M. «Interparticle potential and sedimentation behavior of cement suspensions: Effects of admixtures », Advanced Cement Based Materials, Vol. 8, 1998, pp. 17-27.
7. Russel, W. B., Saville D. A. and Schowalter W. R. « Colloidal Dispersions», 1991, Cambridge University Press.
8. Pellenq R.J.-M., Caillol J.M. and Del ville A. «Electrostatic attraction between two charged surface: A (N, V, T) Monte Carlo simulation», J. Phys. Chern. B, Vol. 101, 1997, pp. 8584-8594.
9. Flatt R.J. « Interparticle forces and superplasticizers in cement suspensions », 1999, PhD. Thesis no 2040 (1999), EPFL, Lausanne, Switzerland.
10. Flatt R.J., Houst Y.F., Bowen P., Hofmann H., Widmer J., Sulser U., Maeder U. and Btirge T.A., «Interaction of superplasticizers with model powders in a highly alkaline medium», Proceedings of the 5th Canmet/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete (editor: Malhotra V.M.), American Concrete Institute, Detroit. SP-173, 1997, pp. 743-762.
11. Yang M., Neubauer C.M. and Jennings H.M. «Interparticle potential and sedimentation behavior of cement suspensions», Advanced Cement Based Materials, vol. 5, 1997, pp. 1-7.
12. De Gennes P.-G., «Polymers at an Interface: A simplified view», Advances in Colloid and Interface Science, vol. 27, 1987, 189-209.
13. Pedersen H.G. and Bergstrom L., «Forces between Zirconia surfaces in poly(acrylic acid) solutions», Journal of the American Ceramic Society, vol.82, No.5, 1999, pp. 1137-1145.14.
14. Roth C.M. and Lenhoff A.M. « Improved parametric representation of water dielectric data for Lifshitz theory calculations», Journal of Colloid and Interfaces Science, vol. 39, 1996, pp. 637-639.