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- W2997637324 abstract "X-ray computed microtomography (micro-CT) was utilized to obtain three- dimensional (3D) images of the hydrating ofcement paste with water-to-cement (w/c) ratio at different ages, i.e., 1, 3, 7 and 28 days. On the basis of the gray levelhistogram of microtomography images, the phase threshold values for each specimen were determined. The componentphases of the cement paste such as pores, hydration products and unhydrated cement particles were identified fromeach other. The volume fraction of pore and degree of hydration of the specimens at different curing ages wereestimated from the image analysis and compared with the experimental data measured by mercury intrusionporosimetry (MIP) tests and loss-on-ignition (LOI) tests respectively. Furthermore, the degree of pore connectivity wasanalyzed based on cluster-labelling technique. Finally, transport properties, e.g. diffusivity of tritiated water of eachspecimen was estimated and compared with the experimental results obtained from the literature. The results derivedfrom image analysis show a reasonably agreement with the measured results, which indicates that micro-CT is areliable and suitable technique to characterize the microstructure evolution of hydrating cement paste. The obtainedmicrostructure can be used to estimate the transport properties of cement-based materials." @default.
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- W2997637324 date "2011-07-08" @default.
- W2997637324 modified "2023-09-27" @default.
- W2997637324 title "Evaluation of microstructure and transport properties of hydrating cement paste using micro-CT image" @default.
- W2997637324 hasPublicationYear "2011" @default.
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