Cement binder based plate

Details Cement binder based plate Cement binder based plate

C - Chemistry, Metallurgy

04

B

C04B 28/06 (2006.01) B28B 1/08 (2006.01) B28B 19/00 (2006.01)

Patent

CA 2449266

The invention concerns a plate whereof the body comprises a binder containing Portland cement, a sulphoaluminous clinker and a calcium sulphate source: the binder comprises, by weight 30 to 80 % of Portland cement, 20 to 70 % of sulphoaluminous binder, 5 to 20 % of a calcium sulphate source, and 0.4 to 7 % of a water-reducing plasticizer or highly water-reducing superplasticizer admixture; it contains light aggregates in an amount such that the final density is close to 1, of the order of 0.8 to 1.5.

Plaque dont le corps de plaque comporte un liant renfermant du ciment Portland, un clinker sulfoalumineux et une source de sulfate de calcium: le liant comprend, en poids, 30 à 80 % de ciment Portland, 20 à 70 % de clinker sulfoalumineux, de 5 à 20 % d'une source de sulfate de calcium, et de 0,4 à 7 % d'au moins un adjuvant plastifiant réducteur d'eau ou superplastifiant haut réducteur d'eau; elle renferme des granulats légers en une quantité telle que la densité finale soit voisine de 1, de l'ordre de 0,8 à 1,5.

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