[1002] Water Vapour Sorption Isotherms of Hardened Cement Paste at Different Temperatures
Keywords:water sorption isotherms, pre-drying, temperature, heat of sorption, C-S-H
The impact of the sample preparation method on the experimental results of water vapour sorption isotherms measured by the volumetric method has been identified and an experimental protocol for measuring at different temperatures is presented here. The results showed the same trends as observed on the data obtained by the gravimetric methods. Further, possible phenomena in the nature of C-S-H hydrates at the beginning of the adsorption process were discusses using the heat of adsorption calculated by the Clausius-Clapeyron relation.