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Analysis of cement pastes for triethanolamine

โœ Scribed by M.T. McCall; J. Mannone


Publisher
Elsevier Science
Year
1975
Tongue
English
Weight
283 KB
Volume
5
Category
Article
ISSN
0008-8846

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โœฆ Synopsis


This report describes our efforts to analyze cement pastes for triethanolamine. This analysis can be efficiently accomplished after short hydration times (ca. 3 min. ) by gas chromatography or infrared spectroscopy. Only trace amounts of the amine are detected, however, after 24 hours of hydration. The infrared spectrum of the material extracted after 24 hours of hydration is different from that of the amine, suggesting that triethanolamine -cement reactions occur during hydration.

Dieser Bericht beschreibt unsere Bemuhungen, den Triethanolamingehalt yon Zementpasten dutch Analyse zu bestimmen. Solche Analysen, entweder Gas-Chromatographie oder Spektralanalyse im [nfraroten, sind erfolgreich nach nur kurzer (etwa 3 Mill. ) Hydrationszeit. Andererseits werden nach langerer (24 Std. ) Hydrationszeit nut noch Spuren des Amin gefunden. Ferner unterscheidet sich das Spektrum des nach 24 Std. Hydration entzogenen Materials deutlich yon dem Spektrum des urspruglichen Amins.

Somit ergibt sich die Vermutung, dass wahrend der Hydration Triethanolamin-Zement Reaktionen vor sich gehen.


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