A mold (10) intended to form a slab from a mixture of agglomerate, a sheet (15) of PVA-based plastic material deposited over the mold surfaces so as to form with it a surface for subsequent contact with the mixture introduced into the mold for forming the slab, whereby in at least some areas a layer (14) of a fluid agent containing PVA in a solution is interposed between the sheet (15) and the mold surfaces. A system involving a plant and mold are also described.

A method of forming a bladder cast ceramic matrix composite (CMC) article including infiltrating a CMC substrate positioned in a cavity of a mold body with a slurry. The CMC substrate includes reinforcement material defining inner spaces. The slurry includes solid particles and a carrier material. During infiltration, the slurry at least partially fills at least a portion of the inner spaces of the CMC substrate. The method also includes inflating at least one bladder that is coupled to the mold body and disposed within the cavity such that a surface of the at least one bladder in an inflated configuration contacts at least one surface of the CMC substrate. The method also includes drying the slurry to remove at least a portion of the carrier material form an infiltrated CMC and deflating the at least one bladder.

Molds and processes that permit high-speed, mass production of retaining wall blocks having patterned or other processed front faces, as well as retaining wall blocks formed by such processes. The invention permits the front face of the block to be impressed with a pattern or otherwise directly processed, to allow the formation of pre-determined block front faces, while at the same time facilitating high-speed, high-volume production of blocks. A mirror image of the desired pattern can be created on a stripper shoe by selecting a desired three-dimensional surface from a naturally occurring or man made object and digitally scanning the selected three-dimensional pattern to create scanned data. The scanned data can then be used to machine a face of the stripper shoe that is the mirror image of the selected pattern.

Molds and processes that permit high-speed, mass production of retaining wall blocks having patterned or other processed front faces, as well as retaining wall blocks formed by such processes. The invention permits the front face of the block to be impressed with a pattern or otherwise directly processed, to allow the formation of pre-determined block front faces, while at the same time facilitating high-speed, high-volume production of blocks. A mirror image of the desired pattern can be created on a stripper shoe by selecting a desired three-dimensional surface from a naturally occurring or man made object and digitally scanning the selected three-dimensional pattern to create scanned data. The scanned data can then be used to machine a face of the stripper shoe that is the mirror image of the selected pattern.

The invention relates to a casting mold, in particular for use in cold casting methods, which is produced with the aid of a powder-based layering method, the final casting mold having a treated surface.

There is provided a method for forming a pattern or a shape in a concrete wall structure, the method comprising: mixing a cement about 100% by weight and silicon about 50% by weight to form a mixed silicon; inserting the mixed silicon into a forming frame; pressing a pressing member onto the first surface and removing the pressing member from the first surface; attaching the forming frame onto the form; placing and curing a concrete to the surface of the mixed silicon in which the shape or pattern is defined; and removing the mixed silicon from the cured concrete, thereby to obtain a concrete wall structure having the three-dimensional pattern or shape formed therein.

There is provided a method for forming a pattern or a shape in a concrete wall structure, the method comprising: mixing a cement about 100% by weight and silicon about 50% by weight to form a mixed silicon; inserting the mixed silicon into a forming frame; pressing a pressing member onto the first surface and removing the pressing member from the first surface; attaching the forming frame onto the form; placing and curing a concrete to the surface of the mixed silicon in which the shape or pattern is defined; and removing the mixed silicon from the cured concrete, thereby to obtain a concrete wall structure having the three-dimensional pattern or shape formed therein.

A method for preparation of a mold (10) intended to form a slab from a mixture of agglomerate comprising the steps of depositing over the mold surfaces a sheet (15) of PVA-based plastic material so as to form with it a surface for subsequent contact with the mixture introduced into the mold for forming the slab, whereby in at least some areas a layer (14) of a fluid agent containing PVA in a solution is interposed between the sheet (15) and the mold surfaces. A plant for carrying out the method and a method for production of a slab are also described.

[Object] To provide a building material manufacturing apparatus that is suitable for suppressing clogging of a screen that screens a building raw material. [Solution] A building material manufacturing apparatus X1 includes at least a screen part 10 and a cleaning mechanism part 40. The screen part 10 includes at least one screen sheet 12 that has an inclination and that has a screen mesh. The cleaning mechanism part 40 includes a scraping part 40a. When the apparatus operates in a building material manufacturing mode in which a building raw material M is supplied to the screen sheet 12 and the screen sheet 12 is performing a wave motion, the scraping part 40a is separated from the screen sheet 12, and, when the apparatus operates in a cleaning mode in which the building raw material M is not supplied to the screen sheet 12 and the screen sheet 12 is not performing a wave motion, the scraping part 40a rotates in contact with the screen sheet 12.

A device for producing molded concrete blocks includes a mold lower part in which at least one mold cavity is formed and a mold upper part including at least one pressure piece with a lower face facing the mold cavity, an upper face facing away from the mold cavity, and lateral surfaces, wherein the pressure piece has fluid openings on the lower face and/or on the lateral surfaces and is designed to engage into the mold cavity such that when the pressure piece is engaged, a fluid can be introduced into the mold cavity from the fluid openings and/or when the pressure piece is engaged, a fluid can be discharged out of the mold cavity from the fluid openings.