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- W4283271093 endingPage "104639" @default.
- W4283271093 startingPage "104639" @default.
- W4283271093 abstract "The effect of the supplementary materials (SCMs) on the moisture content and ion diffusivity at different hydration time is important for the service life modelling of modern concrete. This study designed a simple but valid method to monitor the microstructure change in pastes during hydration. A procedure easy to implement was proposed to detect the water content in pastes. The electrical conductivity of pore solution was evaluated by the evaporable water content in pastes and chemical composition in the binders. Results show that the electrical properties of pastes (conductivity, formation factor and its growth rate) can effectively indicate the hydration reactivity of binder, pore connectivity and volume of pore solution in the hardened pastes. The effect of water-binder ratio and SCMs on the structure of pastes are effectively indexed by the formation factor which is the conductivity of pore solution divided by that of paste. The inflection point of average growth rate of formation factor is a good index for the final setting of pastes. The relation between volume of evaporable water and formation factor is well demonstrated by the extended percolation theory. The real-time monitored electrical conductivity and formation factor of pastes can be used to calculate the chloride migration coefficient in hardened cement pastes." @default.
- W4283271093 created "2022-06-23" @default.
- W4283271093 creator A5006372059 @default.
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- W4283271093 creator A5049775742 @default.
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- W4283271093 creator A5088978185 @default.
- W4283271093 date "2022-09-01" @default.
- W4283271093 modified "2023-10-01" @default.
- W4283271093 title "Real-time monitoring the electrical properties of pastes to map the hydration induced microstructure change in cement-based materials" @default.
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- W4283271093 doi "https://doi.org/10.1016/j.cemconcomp.2022.104639" @default.
- W4283271093 hasPublicationYear "2022" @default.
- W4283271093 type Work @default.