Nanostructure and Nanomechanics of Cement: Polydisperse Colloidal Packing
Author(s)Masoero, Enrico; Del Gado, E.; Pellenq, Roland Jm; Ulm, Franz-Josef; Yip, Sidney
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Cement setting and cohesion are governed by the precipitation and growth of calcium-silicate-hydrate, through a complex evolution of microstructure. A colloidal model to describe nucleation, packing, and rigidity of calcium-silicate-hydrate aggregates is proposed. Polydispersity and particle size dependent cohesion strength combine to produce a spectrum of packing fractions and of corresponding elastic properties that can be tested against nanoindentation experiments. Implications regarding plastic deformations and reconciling current structural characterizations are discussed.
DepartmentMassachusetts Institute of Technology. Department of Civil and Environmental Engineering; Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Physical Review Letters
American Physical Society
Masoero, E. et al. “Nanostructure and Nanomechanics of Cement: Polydisperse Colloidal Packing.” Physical Review Letters 109.15 (2012):[4 pages]. Web. © 2012 American Physical Society.
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