A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ОГНЕСТОЙКИЕ ПРОДУКТЫ НА ОСНОВЕ СУЛЬФАТА КАЛЬЦИЯ
The present invention provides calcium sulphate-based product having reduced shrinkage after exposure to high temperatures, the product comprising gypsum, a pozzolan source e.g. in an amount between 4-27 wt %) and a metal salt additive in an amount between 0.5 and 10 wt %). The pozzolan source may be selected from a kaolinitic clay material, fly ash, rice husk ash, diatomaceous earths, volcanic ashes and pumices, micro-silica, silica fume and silicone oil, The metal salt additive may be a metal salt which decomposes between a temperature of 300-500° C. to yield a metal oxide, e.g. magnesium nitrate.
ОГНЕСТОЙКИЕ ПРОДУКТЫ НА ОСНОВЕ СУЛЬФАТА КАЛЬЦИЯ
The present invention provides calcium sulphate-based product having reduced shrinkage after exposure to high temperatures, the product comprising gypsum, a pozzolan source e.g. in an amount between 4-27 wt %) and a metal salt additive in an amount between 0.5 and 10 wt %). The pozzolan source may be selected from a kaolinitic clay material, fly ash, rice husk ash, diatomaceous earths, volcanic ashes and pumices, micro-silica, silica fume and silicone oil, The metal salt additive may be a metal salt which decomposes between a temperature of 300-500° C. to yield a metal oxide, e.g. magnesium nitrate.
ОГНЕСТОЙКИЕ ПРОДУКТЫ НА ОСНОВЕ СУЛЬФАТА КАЛЬЦИЯ
2018-12-21
Patent
Electronic Resource
Russian
IPC:
C04B
Kalk
,
LIME