A method for injecting ceramic particles into a fibrous texture includes placing a fibrous texture in a mould, injecting from one side a first suspension including a powder of large filtration particles to form a filtration layer, injecting from the opposite side a second suspension into the fibrous texture, the second suspension including a powder of small refractory ceramic particles, then draining through the filtration layer the liquid phase of the second suspension having passed through the fibrous texture and retaining the refractory ceramic particle powder inside the fibrous texture by the filtration layer of so as to obtain a fibrous preform including at least the fibrous texture filled with refractory ceramic particles and the filtration layer.

Systems, methods, and articles of manufacture provide for a mold system for molding structures (e.g., sand castles) from one or more various types of molding substances (e.g., sand, clay, snow). In one embodiment, a mold system comprises a split mold comprising at least two mold sections. In one embodiment, a modular mold system allows for different types of mold sections with corresponding joining elements to be joined together to create forms for molding various types of structures. In some embodiments, mold sections are configured to facilitate the breaking of a vacuum created when molding substances are packed into the mold system, thus making it easier to separate a mold from the formed structure.

A concrete container for a food liquid, particularly for making and aging wine and spirits, includes a container body which exhibits symmetry of revolution. The body includes an interior wall delimiting the storage volume of the container, an external peripheral wall, a first body part and a second body part, which parts are superposed and assembled to close the body, each body part includes an assembly surface for assembly with the other body part. The assembly surfaces include at least: first assembly surfaces placed on the side of the interior wall, the first surfaces exhibiting profiles that mate with one another to ensure continuous contact between the first surfaces, and the first assembly surfaces being extended in the direction toward the outside of the container by second assembly surfaces configured to define between them an interior space that may or may not open onto the external peripheral wall.

A mold (1) and accessories thereof for the forming of an orthopedic spacer made of medical cement, defining a molding cavity (2) delimited by a molding surface (3) configured to impart a pre-established shape to the medical cement and to create the orthopedic spacer, wherein at least one sector (6) of the forming mold (1) defining at least one portion of the molding surface (3) is made with a thermoplastic copolymer based material.

A pressure die casting mold for producing a casting which is part of an integral toilet having a body, a water ring, and a tank, wherein the casting, as an integral component, includes the water ring and the tank which is open on the upper side. The pressure die casting mold is composed of at least five molded parts which are interconnectable in a releasable manner, namely of a base part, two side parts having in each case one half of a front wall, a rear wall, and a cover part. The molded parts delimit a cavity which corresponds to the outer shape of the casting. A wedge element, which at least in portions delimits the inner shape of the water tank, is provided on the base part.

A process for forming an artificial reef includes forming a form having a geometric shape, applying at least one blockout onto a surface of the form such that the blockout extends outwardly of the surface of the form, applying a sprayable concrete over the form and over a portion of the blockout, curing the sprayable concrete on the form for a period of time so that the sprayable concrete adheres to the blockout, and removing the cured sprayable concrete and the adhered blockout together from the surface of the form. The sprayable concrete is applied over the form until the depth of the sprayable concrete is approximately equal to a depth of the blockout. The blockout is a cinder block.

A molded concrete U-wall construction block including a molded concrete U-wall construction block structure formed from cured concrete poured about a block cage made from reinforcing material during a block manufacturing process. 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 process for forming an artificial reef includes forming a form having a geometric shape, applying at least one blockout onto a surface of the form such that the blockout extends outwardly of the surface of the form, applying a sprayable concrete over the form and over a portion of the blockout, curing the sprayable concrete on the form for a period of time such that the sprayable concrete adheres to the blockout, and removing the cured sprayable concrete and the blockout from the surface of the form. The blockout is of a cast concrete material such as a cinder block. The blockout has openings therein so as to open to an interior of the artificial reef.

Described herein is a mold for making units of a dome structure, comprising: a first mold piece, a second mold piece, a third mold piece; the third mold piece is configured to be sandwiched between and assembled with the first and second mold pieces; wherein an assembly of the first mold piece, the second mold piece, and the third mold piece is configured to form a mold cavity; wherein the third mold piece comprises a plurality of sidewall plates; wherein the plurality of sidewall plates are perpendicular to a same spherical surface when the third mold piece is assembled with the first and second mold pieces. Described herein is also a method of using the mold, and the method comprises: assembling the plurality of sidewall plates to form the third mold piece; assembling the second mold piece and the third mold piece; assembling the first mold piece with the second mold piece and the third mold piece to form the mold cavity of a first-level mold; injecting a molding material into the mold cavity; forming a unit of a first-level dome structure by allowing the molding material to form into shape; opening the first-level mold; extracting the unit of the first-level dome structure.

A machine for and method of manufacturing concrete U-wall type construction blocks by molding each concrete u-wall construction block from concrete poured about a block cage made from reinforcing material while said block cage is loaded within the machine. The method involves providing a system of molding jacket panels, including a core molding assembly having a pair of inside stem jacket panels that are adjustably supportable in a substantially parallel manner during a molding process, and arranged is such a manner that the front wall portion is molded in downwardly facing direction toward a horizontal support surface and completely enclosed in one or more molding jacket panels. Before block molding operations, the thickness of the front wall portion of the U-wall construction block is set by determining the thickness of a front wall surface liner and installing the front wall surface forming liner within the system of molding jacket panels.