Journal
PHYSICAL REVIEW LETTERS
Volume 104, Issue 19, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.104.195502
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- King Abdullah University of Science and Technology (KAUST) [KUS-11-004021]
- U.S. DOE, Argonne National Laboratory [DE-AC02-06CH11357]
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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.
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