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Porosity and microstructure characterization of building stones and concretes

Cnudde, V. ; Cwirzen, A. ; Masschaele, B. ; Jacobs, P.J.S.

Engineering geology, 2009-02, Vol.103 (3), p.76-83 [Periódico revisado por pares]

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Título:
Porosity and microstructure characterization of building stones and concretes
Autor: Cnudde, V. ; Cwirzen, A. ; Masschaele, B. ; Jacobs, P.J.S.
Assuntos: Concrete ; Konstruktionsteknik ; Mercury intrusion porosimetry ; Natural building stone ; Porosity ; Structural Engineering ; X-ray computed micro-tomography
É parte de: Engineering geology, 2009-02, Vol.103 (3), p.76-83
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: 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.
Editor: Elsevier B.V
Idioma: Inglês

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