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Porosity and microstructure characterization of building stones and concretes
Department of Geology and Soil Science, Ghent University.
Laboratory of Building Materials Technology, Faculty of Engineering and Architecture, Helsinki University of Technology, Espoo.ORCID iD: 0000-0001-6287-2240
Department of Geology and Soil Science, Ghent University.
Department of Geology and Soil Science, Ghent University.
2009 (English)In: Engineering Geology, ISSN 0013-7952, E-ISSN 1872-6917, Vol. 103, no 3-4, p. 76-83Article in journal (Refereed) Published
Abstract [en]

The microstructure of building materials greatly influences engineering properties like permeability, strength and durability. To determine this microstructure, different techniques were developed, each with its own limitations. The purpose of this study on concrete and natural building stones was to compare and to combine data obtained by X-ray computed micro-tomography (micro-CT), water absorption under vacuum and mercury intrusion porosimetry (MIP). Pore-size distribution curves ranging from 10 nm to 1 mm and total porosity results were obtained. Furthermore, micro-CT revealed the presence of an interfacial transition zone (ITZ) and of micro-cracks inside the aggregates of the concrete samples after mercury intrusion. Micro-CT visualized mercury inside large air bubbles within the concrete samples. Both micro-CT and MIP were compared and their respective advantages and disadvantages discussed. © 2008 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2009. Vol. 103, no 3-4, p. 76-83
Keywords [sv]
Concrete, Mercury intrusion porosimetry, Natural building stone, Porosity, X-ray computed micro-tomography
National Category
Infrastructure Engineering
Research subject
Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-8460DOI: 10.1016/j.enggeo.2008.06.014Scopus ID: 2-s2.0-58349108847Local ID: 6f90b01b-31e1-46a1-8949-67d7feae7832OAI: oai:DiVA.org:ltu-8460DiVA, id: diva2:981398
Note

Upprättat; 2009; Bibliografisk uppgift: Applications of X-ray Computed Tomography in Engineering Geology.; 20160222 (andcwi)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2019-03-28Bibliographically approved

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Cwirzen, A.

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