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.
Analysis of triethanolamine in cement pastes
โ Scribed by I. Jawed; M.T. McCall
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 240 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0008-8846
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โฆ Synopsis
Triethanolamine (TEA) in hardened cement paste has been analyzed by infrared spectrophotometry.
The technique is sensitive for the qualitative detection of small amounts of TEA.
However, the percent recovery is very much concentration dependent and, until the reproducibility of the method has been established, reliable quantitative data from this technique cannot be expected.
๐ SIMILAR VOLUMES
A new analysis method for the quantitative determination of triethanolamine (TEA) in the aqueous phase of cements was developed. TEA was converted into the TEA-Fe 3+ complex by treating it with IM NaOH and 10% Fe 3+ solutions. This method was based on the determination of the TEA-Fe 3+ complex by po
The solubilities of pure hydrates and the mixture of hydrates existing in hardened cement paste to the ethylene glycol-methanol solution, the effects of coexisting Ca(0H)2 upon the solubility and rate of dissolution of each hydrate, suitable concentration of ethylene glycol, and the limit o[ the amo
The effect of w/c, compaction pressure and curing time on the initial and total porosity and pore size distribution, form of hydration products, and morphology of the high-pressure compacted cement paste is discussed.