C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
25/111, 181/17
C04B 38/10 (2006.01) B28C 5/38 (2006.01) B32B 13/04 (2006.01) C04B 28/00 (2006.01) C04B 28/02 (2006.01) C04B 28/14 (2006.01) E04B 1/80 (2006.01) E04B 1/86 (2006.01) E04B 9/00 (2006.01) E04B 9/04 (2006.01) E04C 5/07 (2006.01) G10K 11/162 (2006.01) B28B 5/02 (2006.01) E04B 1/84 (2006.01)
Patent
CA 2320641
An acoustically absorbent porous panel formed from a cured aqueous foamed cementitious material comprising on a wet basis of about 53% to about 68% by weight cement, about 17% to about 48% by weight water, about 0.05% to about 5% by weight fiber, and about 0.01 % to about 10% by weight surfactant. The panel also has pores distributed within the cured material comprising about 75% to about 95% by volume of the material. The cement-based, foamed panel provides good acoustical performance with enhanced durability and moisture resistance.
Panneau poreux absorbant le son constitué d'un matériau en mousse cimentaire aqueuse durcie composé d'une base humide d'environ 53 % à environ 68 % en poids de ciment, d'environ 17 % à environ 48 % en poids d'eau, d'environ 0,05 % à environ 5 % en poids de fibres, et d'environ 0,01 % à environ 10 % en poids d'un agent de surface. Le panneau comporte des pores répartis dans le matériau durci, qui représentent environ 75 % à environ 95 % en volume du matériau. Le panneau de mousse à base de ciment possède une bonne performance acoustique ainsi qu'une durabilité et une résistance à l'humidité accrue.
Bischel Marsha Stalker
Moser Andrea M.
Putt Dean L.
Wiker Anthony L.
Armstrong World Industries Inc.
Awi Licensing Company
Gowling Lafleur Henderson Llp
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