The study about the hydraulic behaviour of the CA25 and the mechanochemical activated CA25 cements started in Part 1 is completed. The hydration anomalies are studied through the analysis of the AI +3 and Ca +2 ions in solution at the end of the solubilization period. With this purpose a non-convent
Microanalysis of high-alumina cement clinker and hydrated HAC/SLAG mixtures
β Scribed by D.L. Rayment; A.J. Majumdar
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 597 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0008-8846
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β¦ Synopsis
Typical chemical compositions of monocalcium aluminate (CA*), dicalcium silicate (C,S), the ferrite phase and of pleochroite present in HAC clinker have been determined by electron probe microanalysis. The composition of stratlingite (C2ASH 8) present in five year old concrete samples prepared from a mlxture of HAC and granulated blastfurnace slag has been determined by using a scanning electron microscope provided with an energy dispersive X-ray analyser. Significant amounts of Fe and Mg were found to be present in stratlingite.
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The expansion characteristics of a newly developed compoundedexpansive additive (CEA) and a pre-hydrated high alumina cement based particulate expansive additive are reported. Effect of temperature during pre-hydration and drying of high alumina cement is studied. The quick setting mechanism and vol
The effect of accelerators, and in particular lithium salts and citric acid solutions, on the setting time of high alumina cement has been studied using calorimetry, solution analysis and X-ray diffraction techniques. Results are discussed with respect to the ternary CaO-AI203-H20 solubility diagram