Cement compositions for controlling alkali-silica reactions...

Details Cement compositions for controlling alkali-silica reactions... Cement compositions for controlling alkali-silica reactions...

C - Chemistry, Metallurgy

04

B

C04B 7/60 (2006.01) C04B 7/42 (2006.01)

Patent

CA 2230984

Processes for making cement which when used to make concrete can stabilize the concrete against alkali-silica reactivity (ASR) from alkali containing components. The process includes adding lithium containing materials in the front of a cement kiln along with the cement starting materials in an amount sufficient to minimize ASR.

L'invention porte sur des procédés de fabrication d'un ciment qui, lorsqu'il est utilisé dans la fabrication du béton, peut stabiliser le béton et le protéger contre une réaction silico-alcaline. Ce ciment est fabriqué à partir de composés contenant des alcalins. Selon ces procédés, on ajoute sur le devant d'un four à ciment des matériaux contenant du lithium aux matières premières du ciment, en quantité suffisante pour que la réaction silico-alcaline soit réduite au minimum.

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