Abstract: A spraying apparatus for preparing a glass fiber reinforced cementitious product comprises a roll type cementitious mortar spray mechanism and a chopped strand spray mechanism which sprays a glass fiber chopped strand into the cementitious mortar stream sprayed by the roll type cementitious mortar spray mechanism.

Abstract: Fiber reinforced cement is continuously prepared by forming a conveyor by connecting a plurality of suction boxes each having a perforated plate, contacting the perforated plates of the suction boxes with a filter cloth and moving the suction boxes with the filter cloth at a synchronous speed, feeding a cementitious slurry and a fiber on the filter cloth, removing excess water by suction from the cementitious slurry through a suction trough connected to a suction device, and releasing the suction on the suction boxes to separate the filter cloth from the perforated plates of the suction boxes.

Abstract: A method is disclosed of molding a cementitious material within a mold having a filler material bed, the configuration of which is maintained by means of suction applied through a filter disposed within the mold frame. A shield layer can be formed upon a surface of the filler material bed having air permeability so as to impart a desirable shape thereto, and the filler material is fixed under reduced pressure conditions within the mold so as to form a molding mold, whereupon the cementitious material may be charged into the mold so as to set therein. It is also possible to achieve the method of the present invention by charging a cementitious material within a molding mold having a desirable configuration, forming a filler material bed having good air permeability with or without a shield layer disposed upon the cementitious material, and preparing a hardening mold, under reduced pressure conditions, beneath the filler material bed.

Abstract: An apparatus for continuous liquid-solid separation has suction boxes which respectively have a suction hole on a rear surface and a perforated surface at a front surface and said suction boxes being connected in series to form a conveyor and said suction holes being connected to a suction trough so as to give the sucking condition of the suction boxes in the zone of the suction trough wherein a filter cloth is contacted with the perforated surfaces of the suction boxes and is held by side plates which can be closed and opened at both sides of the suction boxes and the filter cloth and the suction boxes are moved at the synchronized velocity under suction.