FraMCoS 2 1995 Zurich, Switzerland

Water Movement within Mortar Analyzed as Capillary Flow

order to evaluate shrinkage stress and it's influence on fracture, it is necessary to predict water movement within concrete precisely. non-linear diffusion equation has been successfully applied to water movement but only during the drying process. As a model which…

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Year 1995
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Abstract

order to evaluate shrinkage stress and it's influence on fracture, it is necessary to predict water movement within concrete precisely. non-linear diffusion equation has been successfully applied to water movement but only during the drying process. As a model which can be applied to both drying and wetting processes, capillary flow is considered to be worth examining as one possibility in order to establish a universal model. In the first step, one-dimensional water movement within mortar was studied both analytically and experimentally. A model consisting of capillaries with various sizes was adopted and water movement was analyzed by assuming that it was caused by capillary action. A good correlation was obtained between numerical results and experimental data.