Preinduction and Induction Hydration of Tricalcium Silicate - An Environmental Scanning Electron-Microscopy Study

Meredith, P, Donald, AM and Luke, K (1995) Preinduction and Induction Hydration of Tricalcium Silicate - An Environmental Scanning Electron-Microscopy Study. Journal of Materials Science, 30 8: 1921-1930. doi:10.1007/BF00353014


Author Meredith, P
Donald, AM
Luke, K
Title Preinduction and Induction Hydration of Tricalcium Silicate - An Environmental Scanning Electron-Microscopy Study
Journal name Journal of Materials Science   Check publisher's open access policy
ISSN 0022-2461
Publication date 1995-04-01
Year available 1995
Sub-type Article (original research)
DOI 10.1007/BF00353014
Open Access Status Not yet assessed
Volume 30
Issue 8
Start page 1921
End page 1930
Total pages 10
Place of publication LONDON
Publisher Kluwer Academic Publishers
Language eng
Abstract Environmental scanning electron microscopy (ESEM) has been used to study the very early pre-induction, and induction physical processes that occur in the hydration of tricalcium silicate. An in situ experimental technique is described which allows direct, real-time observation of the sub-micrometre morphological changes that take place during this reaction. The results of this investigation are correlated with kinetic data obtained by differential scanning calorimetry (DSC). In this way, microstructural evolution has been identified with the stages of very early hydration. Upon first contact with water, a gelatinous coating was seen to form at grain surfaces and a crystalline secondary product was observed at the end of an extensive dormant period. These findings are viewed in the light of previous ''wet'' and ''dry'' microscopy studies, and are discussed within the framework of ordinary Portland cement as a possible explanation of induction. Comment is made as to the suitability of environmental SEM for analysis of such materials.
Keyword Portland-Cement Paste
Sem
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: ResearcherID Downloads - Archived
 
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