Effect of hydration and air exposure on sorption properties and phase composition of calcium silicate hydrate

摘要

The research results on stability of amorphous calcium silicate hydrate samples in air medium with high humidity and some of their sorption characteristics obtained for low concentrations (from 0.34x10(-2) to 0.17 mmol L-1) of cobalt ions in an aqueous medium were presented. It was shown that the sorption capacity of calcium silicate hydrate is affected by the phase composition change, caused by interaction with carbon dioxide to form two calcium carbonate polymorphs, calcite and aragonite, and amorphous silica.