A preparation method for an easily-releasable concrete test mould with an inner wall having ultra-hydrophobic/ultra-smooth performance includes spin-coating a negative photoresist and obtaining a substrate with an inner wall having inverted-trapezoid microstructures by ultraviolet lithography; depositing a metal layer by vacuum evaporation; removing the metal layer on an upper surface of the inverted trapezoid microstructures of the inner wall of the substrate; obtaining a micro-nano hierarchical structure on the metal layer surrounding the inverted trapezoid microstructures of the inner wall of the substrate; spin-coating a molten wax and cooling down to room temperature, and filling the solid wax into micron-level pores between the inverted trapezoid structures; spin-coating a positive photoresist and performing ultraviolet lithography; g. draining the solid wax out of the micron-level pores to obtain a substrate with an ultra-hydrophobic surface structure; and assembling the substrate to obtain an ultra-hydrophobic easily-releasable concrete test mould.

A preparation method for an easily-releasable concrete test mould with an inner wall having ultra-hydrophobic/ultra-smooth performance includes spin-coating a negative photoresist and obtaining a substrate with an inner wall having inverted-trapezoid microstructures by ultraviolet lithography; depositing a metal layer by vacuum evaporation; removing the metal layer on an upper surface of the inverted trapezoid microstructures of the inner wall of the substrate; obtaining a micro-nano hierarchical structure on the metal layer surrounding the inverted trapezoid microstructures of the inner wall of the substrate; spin-coating a molten wax and cooling down to room temperature, and filling the solid wax into micron-level pores between the inverted trapezoid structures; spin-coating a positive photoresist and performing ultraviolet lithography; g. draining the solid wax out of the micron-level pores to obtain a substrate with an ultra-hydrophobic surface structure; and assembling the substrate to obtain an ultra-hydrophobic easily-releasable concrete test mould.

A block reinforcement cage made from reinforcing material and adapted for loading within a machine during a block manufacturing process for molding a concrete U-wall construction block structure. The block cage includes an open aperture formed in each of its stem reinforcing portions. During the block manufacturing process, the first and second support members of a support mechanism are inserted within the open apertures formed in the stem reinforcing sections of the block cage, and cooperate with the open apertures of the block cage so as to (i) support the block cage when being loaded into a block manufacturing machine, (ii) define central apertures molded in each stem portion of the concrete U-wall construction block structure, and (iii) lift the molded concrete U-wall construction block when being unloaded from the machine.

A block reinforcement cage made from reinforcing material and adapted for loading within a machine during a block manufacturing process for molding a concrete U-wall construction block structure. The block cage includes an open aperture formed in each of its stem reinforcing portions. During the block manufacturing process, the first and second support members of a support mechanism are inserted within the open apertures formed in the stem reinforcing sections of the block cage, and cooperate with the open apertures of the block cage so as to (i) support the block cage when being loaded into a block manufacturing machine, (ii) define central apertures molded in each stem portion of the concrete U-wall construction block structure, and (iii) lift the molded concrete U-wall construction block when being unloaded from the machine.

Provided is a method for forming a ceramic article, including disposing a slurry in a mold, wherein the slurry includes a ceramic powder and a photoctivable pre-polymer; and forming a green ceramic article wherein forming includes exposing the slurry to radiant energy, such as ultraviolet radiation, wherein the radiant energy catalyzes polymerization of the prepolymer. In another aspect, provided is method for forming an article, including disposing a slurry in a mold, wherein the slurry includes a photoactivable pre-polymer and a powder and the powder includes a ceramic powder, a metal powder, or both; and exposing the slurry to ultraviolet radiation wherein the ultraviolet radiation catalyzes polymerization of the pre-polymer.

Provided is a method for forming a ceramic article, including disposing a slurry in a mold, wherein the slurry includes a ceramic powder and a photoctivable pre-polymer; and forming a green ceramic article wherein forming includes exposing the slurry to radiant energy, such as ultraviolet radiation, wherein the radiant energy catalyzes polymerization of the prepolymer. In another aspect, provided is method for forming an article, including disposing a slurry in a mold, wherein the slurry includes a photoactivable pre-polymer and a powder and the powder includes a ceramic powder, a metal powder, or both; and exposing the slurry to ultraviolet radiation wherein the ultraviolet radiation catalyzes polymerization of the pre-polymer.

A plant for the production of slabs from a mixture of agglomerate comprises a station (50) with a mixture distribution unit (52) which pours the mixture onto the inner surface of a slab forming mould (11) present in the station. The mould (11) is provided with a sheet (15) of plastic protective material arranged above the inner surface of the mould and which forms the surface for contact with the mixture which is introduced into the mould by the distribution unit (52). The station comprises air suction means which are coupled/connected to suction ducts (54) which are present in the mould and which emerge with their front end inside the mould in a zone of the mould situated between the inner surface of the mould and the sheet (15), so as to allow the suction of air between the sheet and this inner surface and bring the sheet (15) against this surface by means of a vacuum. A method for the production of slabs is also described.

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.

A manhole base liner (1), in particular for a wastewater manhole, has a base body (2) which comprises a tread surface (3) and at least one pipe connection opening (5). The base body (2) is produced in one piece from flexible material with a wall thickness, with which it can be bent together substantially arbitrarily in at least partial regions.

A method for producing molded parts (16), a water-soluble casting mold (6) being produced in a first step using a layering method, in particular using a powder bed-based layering method. In a second step, the surface of the casting mold (6) is sealed with the aid of a material (9; 10). A casting of the molded part (16) is then formed by filling the casting mold (6) with a free-flowing, hardenable material (13), in particular a hydraulically setting material. After the casting has solidified, the casting mold (6) is dissolved with the aid of an aqueous solution (18), in particular a heated aqueous solution (18). The present application furthermore relates to a material system for producing a water-soluble casting mold (6), comprising at least one water-soluble material for building a casting mold (6) in a layering method, as well as comprising at least one material (9; 10) for sealing the surface of the casting mold (6).