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Towards an Intrinsic Relationship between Diffusion Coefficients and Microscopic Features of Cements ?
Published online by Cambridge University Press: 21 March 2011
Abstract
Long-term behavior of cemented waste packages requires the knowledge of water diffusion coefficients (water is supposed to be the main degradation agent, by solubilization of some chemical compounds). A simple modeling, based on the use of hydration code CEMHYD3D is proposed and validated for pure OPC pastes (sound or degraded) at mass ratio water / cement lying between 0.25 and 0.65. The nature of the porosity available for diffusion and the role of residual anhydrous compounds are discussed.
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- Copyright © Materials Research Society 2001
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