The quantitative determination of hydrated calcium sulphates in cement by DSC
β Scribed by J. Dunn; K. Oliver; G. Nguyen; I. Sills
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 616 KB
- Volume
- 121
- Category
- Article
- ISSN
- 0040-6031
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Calcium silicosulphate is reported to have the chemical composition Cas(SiO,)2(SO,). However, the synthetic product prepared in air at IIO0Β°C contains 0.46 wt % H20. It is not known how the water is present in the structure; assuming it to be OH-, the formula is CasSi2SO~.88(OH)0.2~. This water is
## Abstract Ammonium chloride solution is a satisfactory solvent for the calcium sulphate, anhydrite, and also very probably for gypsum. Extraction can be carried out completely on a β200 mesh material in a fairly short period. By means of this solution a differentiation can be made between the sul
The possibilities to determine AFt-(ettringite) and AFm-(monosulphate) in hydrated cement pastes were studied by measuring the intensities of the pertinent DTA and XRD peaks on 4 synthetic AFt preparations, 5 synthetic AFm preparations and on a series of portland cement pastes of different compositi