Method in the manufacture of steam-cured light-weight...

C - Chemistry – Metallurgy – 04 – B

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C04B 28/02 (2006.01) C04B 24/42 (2006.01)

Patent

CA 1135289

ABSTRACT A method in the manufacture of steam-cured light- weight aerated concrete having hydrophobic properties, comprising preparing an aqueous expandable and solidi- fiable slurry from one or more hydraulic binders and one or more silica-containing materials, casting the slurry in a mould; expanding and solidifying, and optionally cutting the solidified slurry; and steam-curing the resultant light-weight aerated concrete, wherein prior to casting said slurry it is admixed with silicone oil in a quantity of 0.05 - 0.50%, calculated on the dry weight of the starting mixture.

345542

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