Inorganic board and method for producing the same
AssigneeNichiha Corporation
InventorMasanori Ukai
Life of this patent
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Abstract
An object of the invention is to provide an inorganic board excellent in water absorption resistance, dimensional stability and/or frost damage resistance, and a method for producing the same. The inorganic board is produced through the following processes: preparing a slurry by dispersing a cement-based hydraulic material and a refined fiber reinforcing material into water, adding a saturated carboxylic acid to the slurry, and then the slurry is subjected to the steps of sheetmaking, dehydration, pressing and curing. The inorganic board comprising a refined fiber reinforcing material at 1-30 weight % based on the total solid content and a saturated carboxylic acid at 0.1-2.0% based on the total solid content.
Claims20
An inorganic board comprising;
- a cement-based hydraulic material,
- a refined fiber reinforcing material, and
- a saturated carboxylic acid.
A method for producing an inorganic board comprising steps of:
- preparing a slurry by dispersing a cement-based hydraulic material and a refined fiber reinforcing material into water,
- adding a saturated carboxylic acid to the slurry, and then
- forming the slurry into a sheet,
- dehydrating the sheet,
- pressing the sheet and
- curing the sheet.
Dependencies are inferred from the claim text.