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- W4301354940 abstract "The relationship between humidity and water content in a hydrating cement paste is largely controlled by the nanostructure of the C-S-H gel. Current hydration models do not describe this nanostructure, thus sorption isotherms and self-desiccation are given as constitutive inputs instead of being predicted from microstructural evolution. To address this limitation, this work combines a C-S-H gel description from nanoscale simulations with evolving capillary pore size distributions from a simple hydration model. Results show that a progressive densification of the C-S-H gel must be considered in order to explain the self-desiccation of low-alkali pastes. The impact of C-S-H densification on the evolution of microstructure and sorption isotherms is then discussed, including the effect of water-to-cement ratio, cement powder fineness, and curing temperature. Overall, this work identifies an area where nanoscale simulations can integrate larger-scale models of cement hydration and poromechanics." @default.
- W4301354940 created "2022-10-05" @default.
- W4301354940 creator A5024267376 @default.
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- W4301354940 date "2018-03-26" @default.
- W4301354940 modified "2023-09-23" @default.
- W4301354940 title "C-S-H gel densification: the impact of the nanoscale on self desiccation and sorption isotherms" @default.
- W4301354940 doi "https://doi.org/10.48550/arxiv.1803.09774" @default.
- W4301354940 hasPublicationYear "2018" @default.
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