title: Nanostructure of calcium silicate hydrates in cements.
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.
authors.affiliation: Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720, USA.
authors.forename: L B
authors.initials: LB
authors.lastname: Skinner
authors.forename: S R
authors.initials: SR
authors.lastname: Chae
authors.forename: C J
authors.initials: CJ
authors.lastname: Benmore
authors.forename: H R
authors.initials: HR
authors.lastname: Wenk
authors.forename: P J M
authors.initials: PJ
authors.lastname: Monteiro