Manufacturing method of portland cement

Details Manufacturing method of portland cement Manufacturing method of portland cement

C - Chemistry, Metallurgy

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B

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C04B 14/36 (2006.01) C04B 20/12 (2006.01) C04B 24/36 (2006.01) C04B 28/04 (2006.01) C04B 40/06 (2006.01)

Patent

CA 1221389

A B S T R A C T An improved Portland cement composition and process for producing same comprising dry powder of Portland cement and very fine particles of carbon black, wherein the dry powder of Portland cement is coated with an asphalt film prior to the addition of the carbon black.

425509

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