Ultra-light mineral foam having water repellent properties
AssigneeHolcim Technology Ltd
InventorsPatrick Tintillier, Sébastien Georges
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Abstract
A process for producing a mineral foam having water repellent properties includes a) separately preparing a slurry of cement and an aqueous foam, wherein the cement slurry includes water, at least one water repellent agent different from organosilicon compound, and Portland cement and the aqueous foam includes a co-stabiliser; b) contacting the slurry of cement with the aqueous foam to obtain a slurry of foamed cement; and c) casting the slurry of foamed cement and leave the slurry of foamed cement to set.
Claims18
A process for producing a mineral foam having water repellent properties comprising:
- a) separately preparing a slurry of cement and an aqueous foam, wherein the cement slurry comprises water, at least one water repellent agent different from organosilicon compound, and Portland cement and the aqueous foam comprises a co-stabiliser which is a salt of a maleic anhydride copolymer;
- b) contacting the slurry of cement with the aqueous foam to obtain a slurry of foamed cement;
- and
- c) casting the slurry of foamed cement and leave the slurry of foamed cement to set.
A mineral foam having water-repellent properties obtained by a process comprising:
- a) separately preparing a slurry of cement and an aqueous foam, wherein the cement slurry comprises water, at least one water repellent agent different from organosilicon compound, and Portland cement and the aqueous foam comprises a co-stabiliser which is a polyelectrolyte;
- b) contacting the slurry of cement with the aqueous foam to obtain a slurry of foamed cement;
- and
- c) casting the slurry of foamed cement and leaving the slurry of foamed cement to set;
- the mineral foam having a water absorption at 24 hours of less than 1 kg/m2 and a density in a dry state between 50 kg/m3 and 200 kg/m3.
Dependencies are inferred from the claim text.