Hydraulic binder

C - Chemistry – Metallurgy – 04 – B

Patent

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Details

C04B 7/21 (2006.01) C04B 28/08 (2006.01) C04B 28/14 (2006.01)

Patent

CA 2562112

A hydraulic binder containing slag, aluminium silicate and calcium sulphate containing the following essential constituents, wherein slag, particularly blast furnace slag, amounts to less than 50 per cent by weight, and the aluminium silicate is different from blast furnace slag e.g. fly ash and natural aluminium silicate, such as baslate or andesite, in amounts of 5 75 % by weight respectively in relation to the entire mixture with the proviso that the sum of slag and aluminium silicate is 82 95.9 % by weight, and CaSO4 is provided as one of the activators, the amount thereof being 4 - 15 % by weight. Alkali activators, particularly alkalihydroxide and/or alkali carbonates of Na and/or K are also provided in amounts of 0.1 - 3 wt. %.

Liant hydraulique contenant des scories, des silicates d'aluminium et du sulfate de calcium, qui contient en tant que constituants essentiels du mélange, des scories, en particulier des scories de faut fourneau, dans des quantités inférieures à 50 % en poids, des silicates d'aluminium différents des scories de haut fourneau, tels que par ex. des cendres volantes et des silicates d'aluminium naturels tels que le basalte ou l'andésite, dans des quantités de 5 % en poids à 75 % en poids, par rapport au poids total du mélange, à condition que la somme des scories et des silicates d'aluminium se situe entre 82 et 95,9 % en poids, et CaSO4 en tant que l'un des activateurs dans des quantités allant de 4 à 15 % en poids. Ledit mélange contient en outre des activateurs sous forme d'alcalis, en particulier des hydroxydes alcalins et / ou des carbonates alcalins de Na et / ou de K dans des quantités situées entre 0,1 et 3 % en poids.

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