Predicting Nanocrystallites Development in Cement Pastes
- 1 UnivEvry, University of Paris Saclay, F-91025 Evry, France
Abstract
Cement nanocrystallites constitute the binding phase in concrete, a material that has been around for more than two thousand years and remains the most widely used of manufactured materials. Thanks to their size, their disordered nature, their reprecipitation after combination with water, and their rapid evolution when the concrete sets, these nanostructures have only been subjected to careful investigation quite recently . Nanotechnology is now able to control their formation and exploit their evolution (shrinking and swelling) during the setting phase to produce a concrete with a strength and ductility close to those of steels. Furthermore, the analysis of basic nanoscopic reactions occurring during setting, and their modification by polymer additives acting at the interfaces, numerical modelling techniques are potentially able to predict big evolutions and properties of nanocrystallites. Here we discuss the future of these nanocrystallites in new applications.
- Gatty, L., Bonnamy, S., Feylessoufi, A., Clinard, C., Richard, P. and Van Damme, H. (2001) A Transmission Electron Microscopy Study of Interfaces and Matrix Homogeneity in Ultra-High-Performance Cement-Based Materials. Journal of Materials Science, 36, 4013-4026. https://doi.org/10.1023/A:1017938725748
- Feylessoufi, A., Crespin, M., Dion, P., Bergaya, B., Van Damme, H. and Richard, P. (1997) Controlled Rate Thermal Treatment of Reactive Powder Concretes. Advanced Cement Based Materials, 6, 21-27. https://doi.org/10.1016/S1065-7355(97)90002-X
- Feylessoufi, F., Villieras, F., Michot, J.-L., De Donato, P., Cases, J.-M. and Richard, P. (1996) Water Environment and Nanostructural Network in a Reactive Powder Concrete. Cement and Concrete Composites, 18, 23-29. https://doi.org/10.1016/0958-9465(95)00036-4
- Soth, R., Feylessoufi, A. and Cassar, L. (2006) Early Age Hydration of Cement Pastes by Energy-Dispersive Synchrotron X-Ray Diffraction and Neutron Diffraction. 2nd Advanced Cementitious Materials Symposium (ACM’06), 4-5 September 2006, Evry.
- Soth, R., Faure, P., Rodts, S. and Feylessoufi, A. (2006) Nuclear Magnetic Resonance and Ultrasonic Spectroscopy Investigation for Understanding Setting Mechanisms of a Modified Cement Paste. 2nd Advanced Cementitious Materials Symposium (ACM’06), 4-5 September 2006, Evry.
- Feylessoufi, A., Cohen-Tenoudji, F., Morin, V. and Richard, R. (2001) Early Ages Shrinkage Mechanisms of Ultra-High-Performance Cement-Based Materials. Cement and Concrete Research, 31, 1573-1579. https://doi.org/10.1016/S0008-8846(01)00602-0
- Bullard, J.W. (2008) A Determination of Hydration Mechanisms for Tricalcium Silicate Using a Kinetic Cellular Automaton Model. J. Am. Ceram. Soc., 91, 2088-2097. https://doi.org/10.1111/j.1551-2916.2008.02419.x
- Bishnoi, S. and Scrivener, K.L. (2009) μic: A New Platform for Modelling the Hydration of Cements. Cement and Concrete Research, 39, 266-274. https://doi.org/10.1016/j.cemconres.2008.12.002
- Thomas, J.J., Biernacki, J.J., Bullard, J.W., Bishnoi, S., Dolado, J.S., Scherer, G.W. and Luttge (2011) Modeling and Simulation of Cement Hydration Kinetics and Microstructure Development. Cement and Concrete Research, 41, 1257-1278. https://doi.org/10.1016/j.cemconres.2010.10.004
- Scherer, G.W., Zhang, J., Quintanilla, J.A. and Torquato, S. (2012) Hydration and Percolation at the Setting Point. Cement and Concrete Research, 42, 665-672. https://doi.org/10.1016/j.cemconres.2012.02.003