Reinforced cement sheet product containing no asbestos for...

Details Reinforced cement sheet product containing no asbestos for... Reinforced cement sheet product containing no asbestos for...

C - Chemistry, Metallurgy

04

B

261/56

C04B 28/04 (2006.01) B28B 1/52 (2006.01)

Patent

CA 1177496

REINFORCED CEMENT SHEET PRODUCT CONTAINING NO ASBESTOS FOR FABRICATING ON HATSCHEK MACHINE ABSTRACT OF THE DISCLOSURE A fiber-cement product which is capable of being formed on a Hatschek machine consisting essentially of a Portland cement binder in the amount of between about 40% and 80% by weight, natural and/or synthetic fibers in an amount of between about 1% and 15% by weight, clay in an amount of between about 2% and 15% by weight, and poly(ethylene oxide) homopolymer in an amount of between about .03% and 0.5% by weight. The product may also contain silica and/or filler in an amount of between 10% and 40% by weight. The silica is generally used in a product which is to be autoclaved. The filler may be waste fiber-cement product or inert filler material.

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