Nanostructure of Calcium Silicate Hydrates in Cements

L. B. Skinner, S. R. Chae, C. J. Benmore, H. R. Wenk, P. J. M. Monteiro

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Calcium silicate hydrate (CSH) is the major volume phase in the matrix of Portland cement concrete. Total x-ray scattering measurements with synchrotron x rays on synthetic CSH(I) shows nanocrystalline ordering with a particle diameter of 3.5(5) nm, similar to a size-broadened 1.1 nm tobermorite crystal structure. The CSH component in hydrated tricalcium silicate is found to be similar to CSH(I). Only a slight bend and additional disorder within the CaO sheets is required to explain its nanocrystalline structure. © 2010 The American Physical Society.
Original languageEnglish (US)
JournalPhysical Review Letters
Issue number19
StatePublished - May 11 2010
Externally publishedYes


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