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X-Ray Microtomography of an Astm C109 Mortar Exposed to Sulfate Attack

Published online by Cambridge University Press:  21 February 2011

D.P. Bentz ,
Nicos. S. Martys ,
P. Stutzman ,
M. S. Levenson ,
E.J. Garboczi ,
J. Dunsmuir  and
L. M. Schwartz
D.P. Bentz
Affiliation:
Building and Fire Research Laboratory, Building 226 Room B-350, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
Nicos. S. Martys
Affiliation:
Building and Fire Research Laboratory, Building 226 Room B-350, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
P. Stutzman
Affiliation:
Building and Fire Research Laboratory, Building 226 Room B-350, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
M. S. Levenson
Affiliation:
Computing and Applied Mathematics Laboratory, Building 101 Room A-337, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
E.J. Garboczi
Affiliation:
Building and Fire Research Laboratory, Building 226 Room B-350, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
J. Dunsmuir
Affiliation:
Exxon Research and Engineering Company, Route 22 East, Annandale, NJ 08801, USA
L. M. Schwartz
Affiliation:
Schlumberger-Doll Research, Old Quarry Road, Ridgefield, CT 06877
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Abstract

X-ray microtomography can be used to generate three-dimensional 5123 images of random materials at a resolution of a few micrometers per voxel. This technique has been used to obtain an image of an ASTM C109 mortar sample that had been exposed to a sodium sulfate solution. The three-dimensional image clearly shows sand grains, cement paste, air voids, cracks, and needle-like crystals growing in the air voids. Volume fractions of sand and cement paste determined from the image agree well with the known quantities. Implications for the study of microstructure and proposed uses of X-ray microtomography on cement-based composites are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 370: Symposia Va/Vb – Microstructure of Cement-Based Systems/Bonding and Interfaces in Cement... , 1994 , 77
Copyright
Copyright © Materials Research Society 1995

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