Abstract
Tricalcium silicate and alite pastes aged from 1 day to 30 years were studied by trimethylsilylation and examination of the resulting derivatives by gas liquid chromatography, gel permeation chromatography and other methods. At ages up to about 6 months, silicate anion polymerization probably occurs predominantly during the formation of the CSH and not by changes within CSH that has already formed. The latter process is extremely slow, and only becomes significant after substantially all the C 3S has reacted.
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