Fiber cement decking products and methods for the production thereof
AssigneesEtex Services NV, Eternit GmbH
InventorsRuben Bordin, Maarten Milis, Philippe Hellemans
Life of this patent
Estimating the term…
Abstract
The present invention relates to fiber cement decking products, which comprise at least one or more pigments and which are at least partly coloured in the mass. The present invention further relates to methods for the production of such fiber cement decking products as well as uses of such fiber cement decking products in the building industry. The present invention further relates to fiber cement formulations and fiber cement materials, which are suitable for the production of fiber cement products for decking applications.
Claims9
An air-cured, mass-coloured fiber cement decking product having a thickness between 15 mm and 25 mm, and formed from a fiber cement composition which comprises
- at least one pigment selected from the group consisting of brown iron oxide, black iron oxide and white titanium oxide,
- 2 weight % to 5 weight % of cellulose fibers compared to the total dry weight of the fiber cement composition,
- 75 to 90 weight % Portland cement as hydraulic binder compared to the total dry weight of the fiber cement composition,
- at least one type of synthetic fiber comprising polyvinyl alcohol fiber, and
- amorphous silica in an amount of about 4 weight % to about 9 weight % compared to the total dry weight of the fiber cement composition, wherein
- the synthetic fiber is present in an amount of 1.0 to 3.5 weight % compared to the total dry weight of the fiber cement composition,
- said at least one pigment is present in a total amount of about 3 weight % to about 5 weight % compared to the total dry weight of the fiber cement composition, and
- the fiber cement decking product is compressed at a pressure of 22 MPa to 30 MPa prior to curing.
Dependencies are inferred from the claim text.