Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hydration and strength development in Alumina/Magnesia castable bond systems with CAC or fumed silica additives
Mixtures of alumina-magnesia-silica (or CAC) powders were hydrated at 20 deg C and 30 deg C for 20 h using an isothermal conduction calorimeter. The hydration products were mainly brucite and hydrotalcite although samples with higher CAC content also contained CAC-hydrates. Fumed silica was more effective than CAC in boosting the green strength of cubes using bond systems based on these mixtures. Formation of brucite occurred in the early stages of hydration while hydrotalcite formation was delayed. Brucite and hydrotalcite formation was associated with rapid and high heat evolution approaching about 600 kJ/kg in binary mixtures of alumina-magnesia. The peak rate of heat evolution was a strong function of sample composition.
Hydration and strength development in Alumina/Magnesia castable bond systems with CAC or fumed silica additives
Mixtures of alumina-magnesia-silica (or CAC) powders were hydrated at 20 deg C and 30 deg C for 20 h using an isothermal conduction calorimeter. The hydration products were mainly brucite and hydrotalcite although samples with higher CAC content also contained CAC-hydrates. Fumed silica was more effective than CAC in boosting the green strength of cubes using bond systems based on these mixtures. Formation of brucite occurred in the early stages of hydration while hydrotalcite formation was delayed. Brucite and hydrotalcite formation was associated with rapid and high heat evolution approaching about 600 kJ/kg in binary mixtures of alumina-magnesia. The peak rate of heat evolution was a strong function of sample composition.
Hydration and strength development in Alumina/Magnesia castable bond systems with CAC or fumed silica additives
Norton-Berry, K.J. (Autor:in) / Ghanbari Ahari, K. (Autor:in) / Lee, W.E. (Autor:in)
2001
11 Seiten, 11 Bilder, 2 Tabellen, 12 Quellen
Aufsatz (Konferenz)
Englisch
| British Library Conference Proceedings | 2001