B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 13/02 (2006.01) B28B 1/52 (2006.01) B28B 23/02 (2006.01)
Patent
CA 2520810
An engineered fibre reinforced cement product including a first major surface to which a carbonation reducing sealer is applied and a second generally opposing major surface to which a carbonation reducing sealer is applied, so as to reduce propensity for differential carbonation in the product. A method of manufacturing a durable fibre reinforced cement product, said method comprising steps of: (e) mixing a wet fibre reinforced cement formulation; (f) forming from said formulation a green product defining first and second generally opposing major surfaces; (g) curing the green product to form a cured product; and (h) applying a carbonation reducing sealer to said first and second major surfaces, so as to reduce propensity for differential carbonation in the product. An engineered fibre reinforced cement product including a first major surface with a reduced propensity to differential carbonation, wherein the product has a cement to silica ratio of between 0.29 and around 0.51 and a porosity of between 25% and around 45%.
L'invention concerne un produit en ciment armE de fibres modifiEes comportant une premiEre surface principale sur laquelle est appliquE un produit d'isolation rEduisant la carbonatation, et une deuxiEme surface principale gEnEralement opposEe, sur laquelle est appliquE un produit d'isolation rEduisant la carbonatation, de maniEre A diminuer la tendance A la carbonatation diffErentielle du produit. L'invention concerne Egalement un procEdE pour fabriquer un produit rEsistant en ciment armE de fibres, consistant A: (e) mElanger une formulation de ciment humide armE de fibres; (f) former A partir de ladite formulation un produit vert dEfinissant des premiEre et deuxiEme surfaces principales gEnEralement opposEes; (g) faire vieillir le produit vert pour former un produit vieilli; (h) appliquer auxdites premiEre et deuxiEme surfaces principales un produit d'isolation rEduisant la carbonatation de maniEre A diminuer la tendance A la carbonatation diffErentielle du produit. L'invention dEcrit par ailleurs un produit en ciment armE de fibres modifiEes comportant une premiEre surface principale possEdant une tendance rEduite A la carbonatation diffErentielle, ledit produit prEsentant un rapport ciment-silice compris entre 0,29 et environ 0,51, et une porositE comprise entre 25 % et environ 45 %.
O'chee Milton Terrence
Silva Leonard
Zarb Joseph Emmanuel
Blake Cassels & Graydon Llp
James Hardie International Finance B.v.
James Hardie Technology Limited
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