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4. Outlook and developments
For alkaline silicoaluminous concretes, the raw materials used are metakaolin, metallurgical slag, fly ash, coal slag and mining waste. The materials are activated with alkali hydroxide and/or alkali silicate.
Heating such a mixture to a temperature below 90°C would generally be conducive to maximum performance. Such concretes behave favorably compared to Portland concretes in :
resistance to acidic environments;
temperature and fire resistance ;
protecting reinforcement against corrosion.
To date, there are no publications on their performance compared with that of aluminous cement.
Sodium silicate-lime binder concretes are of interest for :
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Outlook and developments
Bibliography
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Patents
DAVIDOVITS (J.). – US patent 4 349 386 mineral polymers...
DAVIDOVITS (J.). – US patent 4 472 199 synthetic mineral polymers.
DAVIDOVITS (J.). – US patent 4 509 985 early hith strength mineral polymer...
DAVIDOVITS (J.). – US patent 5 342 595 process for obtaining a geopolymeric alumino silicate...
DAVIDOVITS (J.). – US patent 5...
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