Expansive cement

Details Expansive cement Expansive cement

C - Chemistry, Metallurgy

04

B

261/58

C04B 22/14 (2006.01) C04B 7/32 (2006.01)

Patent

CA 1197270

ABSTRACT OF THE DISCLOSURE An improved expansive cement and method of forming same. An expansive clinker containing a stable calcium alumino sulfate compound is separately ground to a selected surface area greater than about 4600 sq. cm/gm. The ground expansive clinker is then blended with a ground cement clinker and with gypsum to form the expansive cement. The expansive cement formed in accordance with the present invention requires less of the expansive clinker than expansive cements known in the art to achieve the same magnitude of expansion.

420730

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