Direct observation of cement hydration by soft X-ray transmission microscopy

Much of the mystery surrounding C-S-H can be attributed to its variability, but also to the inadequacy of observation and analytical techniques. Direct observation is inherently flawed because microscopy techniques that allow high enough resolution generally require destructive drying of the sample....

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Published inJournal of materials science letters Vol. 22; no. 19; pp. 1335 - 1337
Main Authors JUENGER, M. C. G, LAMOUR, V. H. R, MONTEIRO, P. J. M, GARTNER, E. M, DENBEAUX, G. P
Format Journal Article
LanguageEnglish
Published Dordrecht Kluwer Academic Publishers 01.10.2003
Subjects
Applied sciences
Buildings. Public works
Cement concrete constituents
Cements
Exact sciences and technology
Materials
Properties and test methods
Properties of anhydrous and hydrated cement, test methods
Observation
Transmission microscope
Hydration
Soft X ray
Portland cement
C3S phase
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Summary:Much of the mystery surrounding C-S-H can be attributed to its variability, but also to the inadequacy of observation and analytical techniques. Direct observation is inherently flawed because microscopy techniques that allow high enough resolution generally require destructive drying of the sample. A new technique, soft X-ray transmission microscopy, has been pioneered for several materials science applications including cementitious and magnetic materials. The microscope utilises radiation generated by a synchrotron source. Soft X-ray transmission microscopy has great potential for answering critical questions about the rate of formation and morphology of hydration products in cementitious systems. Because of its high resolution and ability to image wet samples at atmospheric pressure, it is a versatile technique. 3 refs.
Bibliography:ObjectType-Article-2
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ISSN:0261-8028
DOI:10.1023/A:1025731210337