Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Extraction of Effective Cement Paste Diffusivities from X‐Ray Microtomography Scans
The transport properties of cement pastes are of crucial importance to the durability of much of our civil infrastructure. Due to its corrosive effects and abundance in many natural environments, considerable efforts have been made to quantify particularly the transport of chloride. The problem of extracting effective diffusivities of cement pastes on the basis of X‐ray microtomography images is considered. A general computational homogenization framework has previously been developed and is here applied to a variety of cement paste whose microstructure has been digitized to a resolution of 1 μm. With this resolution, important submicron features are not resolved. A methodology whereby the pore space is ascribed diffusivity less than the free diffusivity is proposed in the chapter. For this purpose a simple rule that incorporates microtomography data is proposed and shown to yield satisfactory results. computerised tomography; concrete; diffusion
Extraction of Effective Cement Paste Diffusivities from X‐Ray Microtomography Scans
The transport properties of cement pastes are of crucial importance to the durability of much of our civil infrastructure. Due to its corrosive effects and abundance in many natural environments, considerable efforts have been made to quantify particularly the transport of chloride. The problem of extracting effective diffusivities of cement pastes on the basis of X‐ray microtomography images is considered. A general computational homogenization framework has previously been developed and is here applied to a variety of cement paste whose microstructure has been digitized to a resolution of 1 μm. With this resolution, important submicron features are not resolved. A methodology whereby the pore space is ascribed diffusivity less than the free diffusivity is proposed in the chapter. For this purpose a simple rule that incorporates microtomography data is proposed and shown to yield satisfactory results. computerised tomography; concrete; diffusion
Extraction of Effective Cement Paste Diffusivities from X‐Ray Microtomography Scans
Alshibli, Khalid A. (Herausgeber:in) / Reed, Allen H. (Herausgeber:in) / Krabbenhoft, K. (Autor:in) / Karim, M. R. (Autor:in)
01.03.2010
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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