Nanostructure of Calcium Silicate Hydrates in Cements

作者：Skinner L B; Chae S R; Benmore C J; Wenk H R; Monteiro P J M^*

来源：Physical Review Letters, 2010, 104(19): 195502.

DOI：10.1103/PhysRevLett.104.195502

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.

• 出版日期2010-5-14