Nanostructure of calcium silicate hydrates in cements

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Abstract

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.

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Skinner, L. B., Chae, S. R., Benmore, C. J., Wenk, H. R., & Monteiro, P. J. M. (2010). Nanostructure of calcium silicate hydrates in cements. Physical Review Letters, 104(19). https://doi.org/10.1103/PhysRevLett.104.195502

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