Highly durable cement products containing siliceous ashes

Details Highly durable cement products containing siliceous ashes Highly durable cement products containing siliceous ashes

C - Chemistry, Metallurgy

04

B

C04B 18/06 (2006.01) C04B 7/02 (2006.01) C04B 18/10 (2006.01) C04B 28/04 (2006.01)

Patent

CA 2085219

Cement blends incorporating at least 5 and up to 40% siliceous crop residue ash and cement compositions and products containing said blends are provided. At least about 50% of the ash particles are in the 10-75 micrometer size distribution range and the mean diameter is greater than 6 micrometer. Methods for decreasing the permeability of hardened cement products and a method for accelerating the early strength of a concrete mixture containing fly ash are also provided.

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