Impact of hydration and carbonation on water vapour sorption isotherms of cement pastes.

Author(s): Matthieu BERTIN, Véronique BAROGHEL-BOUNY, Othman OMIKRINE METALSSI
Paper category: Proceedings
Book title: Proceedings of the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures Volume 1
Editor(s): Stéphanie Staquet and Dimitrios Aggelis
ISBN:978-2-35158-199-5
e-ISBN:978-2-35158-198-8
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 473-478
Total Pages: 6
Language : English

Abstract: Water vapour sorption isotherms (WVSI) describe the relationship between water content and the relative humidity of a material at equilibrium state. They constitute important data in particular in concrete carbonation phenomenon. Therefore the impacts of hydration and carbonation on these curves need to be analysed. This study investigates the influence of coupled hydration and carbonation on water vapour sorption isotherms for CEM I and CEM I + 60% GGBS (Ground Granulated Blastfurnace Slag) hardened cement pastes with a water-to-binder ratio of 0.57. Carbonation at early age (curing time = 3 days) or at long term (curing time = 6 months) decreases the specific surface area and the gel pore system becomes coarser for both CEM I and CEM I + 60% GGBS materials.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00