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Nanostructure and nanomechanics of cement: polydisperse colloidal packing

Masoero, E., Del Gado, E., Pellenq, R. J-M, Ulm, F-J and Yip, S. 2012. Nanostructure and nanomechanics of cement: polydisperse colloidal packing. Physical Review Letters 109 (15) , 155503. 10.1103/PhysRevLett.109.155503

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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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: American Physical Society
ISSN: 0031-9007
Last Modified: 28 Oct 2021 14:45

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