A bearing wall board and a method of producing the same

Details A bearing wall board and a method of producing the same A bearing wall board and a method of producing the same

E - Fixed Constructions

04

C

E04C 2/26 (2006.01) B32B 13/02 (2006.01) C04B 24/04 (2006.01) E04F 13/00 (2006.01)

Patent

CA 2616615

The present invention provides a bearing wall with a low specific gravity of as low as 1.0 or less and a wall-magnification of 2.5 or more, which is excellent in strength, fire--safety, workability, dimensional stability, freezing resistance, water resistance and earthquake resistance, and a method for manufacturing the board. The board is produced by a method that contains the steps of: preparing a slurry by dispersing a cement-based hydraulic material, a fiber reinforcing material and a lightweight aggregate 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. The fiber reinforcing material includes a refined fiber with a freeness of 650 ml or less and an unrefined fiber and the saturated carboxylic acid is preferably a stearic acid--based carboxylic acid or a succinic acid-based carboxylic acid.

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