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Extraction of effective cement paste diffusivities from X-ray microtomography scans

The problem of extracting effective diffusivities of cement pastes on the basis of X-ray microtomography images is considered. A general computational homogenization framework is developed and applied to a variety of cement pastes whose microstructure has been digitized to a resolution of 1 mu m. At...

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Main Authors: Karim, M.R., Krabbenhoft, K.
Format: Article
Published: 2010
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.um.edu.my/8781/
http://www.scopus.com/inward/record.url?eid=2-s2.0-77955849147&partnerID=40&md5=ecd300f790c58e7887bce49cd8e265d5 http://onlinelibrary.wiley.com/doi/10.1002/9781118557723.ch19/summary
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id my.um.eprints.8781
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spelling my.um.eprints.87812014-04-04T01:31:52Z http://eprints.um.edu.my/8781/ Extraction of effective cement paste diffusivities from X-ray microtomography scans Karim, M.R. Krabbenhoft, K. TA Engineering (General). Civil engineering (General) The problem of extracting effective diffusivities of cement pastes on the basis of X-ray microtomography images is considered. A general computational homogenization framework is developed and applied to a variety of cement pastes whose microstructure has been digitized to a resolution of 1 mu m. At this resolution, important submicron features are not resolved. Consequently, we propose a methodology whereby the pore space is ascribed a diffusivity less than the free diffusivity. For this purpose, a simple rule that incorporates microtomography data is proposed and shown to yield satisfactory results. 2010 Article PeerReviewed Karim, M.R. and Krabbenhoft, K. (2010) Extraction of effective cement paste diffusivities from X-ray microtomography scans. Transport in Porous Media, 84 (2). pp. 371-388. ISSN 0169-3913 http://www.scopus.com/inward/record.url?eid=2-s2.0-77955849147&partnerID=40&md5=ecd300f790c58e7887bce49cd8e265d5 http://onlinelibrary.wiley.com/doi/10.1002/9781118557723.ch19/summary DOI 10.1007/s11242-009-9506-y
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Karim, M.R.
Krabbenhoft, K.
Extraction of effective cement paste diffusivities from X-ray microtomography scans
description The problem of extracting effective diffusivities of cement pastes on the basis of X-ray microtomography images is considered. A general computational homogenization framework is developed and applied to a variety of cement pastes whose microstructure has been digitized to a resolution of 1 mu m. At this resolution, important submicron features are not resolved. Consequently, we propose a methodology whereby the pore space is ascribed a diffusivity less than the free diffusivity. For this purpose, a simple rule that incorporates microtomography data is proposed and shown to yield satisfactory results.
format Article
author Karim, M.R.
Krabbenhoft, K.
author_facet Karim, M.R.
Krabbenhoft, K.
author_sort Karim, M.R.
title Extraction of effective cement paste diffusivities from X-ray microtomography scans
title_short Extraction of effective cement paste diffusivities from X-ray microtomography scans
title_full Extraction of effective cement paste diffusivities from X-ray microtomography scans
title_fullStr Extraction of effective cement paste diffusivities from X-ray microtomography scans
title_full_unstemmed Extraction of effective cement paste diffusivities from X-ray microtomography scans
title_sort extraction of effective cement paste diffusivities from x-ray microtomography scans
publishDate 2010
url http://eprints.um.edu.my/8781/
http://www.scopus.com/inward/record.url?eid=2-s2.0-77955849147&partnerID=40&md5=ecd300f790c58e7887bce49cd8e265d5 http://onlinelibrary.wiley.com/doi/10.1002/9781118557723.ch19/summary
_version_ 1643688385322156032
score 13.211869

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