Cement compositions

C - Chemistry – Metallurgy – 04 – B

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C04B 28/06 (2006.01) C04B 7/32 (2006.01)

Patent

CA 1335298

The advantages of high alumina cement (early strength, resistance to sulphate attack) are preserved and its disadvantage (weakens with age) is solved by mixing it 50:50 with ground granulated blast furnace slag. This encourages formation of gehlenite octahydrate in preference to or to the exclusion of the harmful 'conversion' (weakening) reaction.

579727

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