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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Abstract
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.
Date issued
2012-10
URI
http://hdl.handle.net/1721.1/76305
Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering; Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
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.
Version: Final published version
ISSN
0031-9007
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