Nanostructure of calcium silicate hydrates in cements.

Citation data:

Physical review letters, ISSN: 1079-7114, Vol: 104, Issue: 19, Page: 195502

Publication Year:
2010
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Captures 173
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Citations 122
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Repository URL:
http://hdl.handle.net/10754/598952
PMID:
20866975
DOI:
10.1103/physrevlett.104.195502
Author(s):
Skinner, L. B.; Chae, S. R.; Benmore, C. J.; Wenk, H. R.; Monteiro, P. J. M.
Publisher(s):
American Physical Society (APS)
Tags:
Physics and Astronomy
article description
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.