Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720, USA.
Phys Rev Lett. 2010 May 14;104(19):195502. doi: 10.1103/PhysRevLett.104.195502. Epub 2010 May 11.
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.
硅酸钙水合物（CSH）是波特兰水泥混凝土基质中的主要体积相。用同步加速器 X 射线对合成 CSH（I）进行的全 X 射线散射测量显示出具有 3.5（5）nm 粒径的纳米晶有序，类似于大小展宽的 1.1nm 托贝莫来石晶体结构。水化硅酸三钙中的 CSH 组分被发现与 CSH（I）相似。仅需在 CaO 片层内稍微弯曲和增加无序，即可解释其纳米晶结构。
