A method for making a carbonated precast concrete product includes: obtaining a mixture including at least one binder material, an aggregate, and water; molding the mixture into a molded intermediate; demolding the molded intermediate to obtain a demolded intermediate, the demolded intermediate having a first water-to-binder ratio; conditioning the demolded intermediate to provide a conditioned article having a second water-to-binder ratio less than the first water-to-binder ratio of the demolded intermediate; moisturizing at least one surface of the conditioned article with an aqueous medium, thereby causing a weight gain of the conditioned article and providing a moisturized product, a first portion of the moisturized product having a third water-to-binder ratio greater than a fourth water-to-binder ratio of a remainder of the moisturized product; and curing the moisturized product with carbon dioxide to obtain the carbonated precast concrete product.

The disclosed subject matter concerns earth based mixtures, methods of preparing mixtures, and a process of forming articles of manufacture, as well as a process of manufacturing articles in molds configured for compression molding of earth based mixtures in accordance with the disclosed subject matter, including mixtures containing one or more of, e.g., sand, silt, clay, minerals, or any combination thereof.

Machines, systems and methods for curing materials, including organic and nonorganic materials, are described. In particular, machines, systems and methods for machines, systems and methods for materials, such as organic plant materials or inorganic materials, including cannabis materials. In particular, the present invention relates to machines, systems and methods for an automated drying and curing chamber machine for both personal and commercial applications, wherein the machine uses customized variable settings and laminar air flow dynamics via negative pressure to ensure the optimal curing and drying environment for plant materials are described.

A method is provided for producing an article which is transparent to near-wave IR, mid-wave and Long-wave multi-spectral and IR wavelength in the region of 0.4 pm to 16 μm. The method includes the steps of (a) Producing ultra-fine powder of CaLa.sub.2S.sub.4 via SPLTS process, (b) followed by pretreatment of the ultra-fine powder under inert and reducing gas conditions including H.sub.2 or Argon or N.sub.2 or H.sub.2/H.sub.2S, H.sub.2S, and mixtures there of (c) followed by sieving the powder in 140 mesh screen and cold pressing the powder at 7000 psi for 7 min. into a disk shaped green body (d) then Cold-Isostatic Pressing (CIP) at 40,000 psi for 5 min in a rubber mold (e) finally sintered article of CaLa.sub.2S.sub.4 disk of 25.4 mm diameter with ultra-high density containing cubic phase of CaLa.sub.2S.sub.4 to yield IR transmission of a peak value of 57% within the IR wavelength range of 2 μm to 16 μm, either by using microwave sintering followed by hot isostatic press or spark plasma sintering followed by hot isostatic press or vacuum sintering at (3×10.sup.−6 torr) followed by hot isostatic press or hot press sintering followed by hot isostatic press and finally followed by mirror polished IR article, is obtained.

The invention relates to a process for producing a component (1) from a curable material, a new layer (2) of the material being printed in periodically recurring steps in a 3D printing process onto a layer (3) located thereunder so as to have lower reinforcing elements (4) which protrude above the top of this new layer (2), and also relates to a component produced by a corresponding process. Known processes and components do not allow reinforcement over a large surface area.

The object of designing a process in such a way that the reinforcement thereof withstands high loads is achieved by providing that, after each layer (3) has been printed, upper reinforcing elements (5) are connected to the lower reinforcing elements (4) so as to extend said lower reinforcing elements and so as to form the lower reinforcing elements of the subsequent layer. A corresponding component is the subject of claim 11.

A method of drying a green ceramic honeycomb body (20) comprising: moving the body (20) through a drying system (50) comprising interconnected microwave devices (60), wherein each microwave device (D1, D2, D3) comprises an entrance (62a, 62b, 62c) located at an upstream end and an exit (64a, 64b, 64c) located at a downstream end of the microwave device (D1, D2, D3), the ends defining a downstream direction (72) and an upstream direction (74) in each of the devices (D1, D2, D3); removing moisture from the body (20) by irradiating the body (20) with microwave radiation within each of the devices (D1, D2, D3); and flowing air against the outer peripheral wall (22) of the body (20) while the body (20) is located in each of the microwave devices (D1, D2, D3). The flowing is conducted such that one or more of a supply flow and an exhaust flow of air is adjusted in at least one of the devices (D1, D2, D3) such that the air flow in the system is at a predetermined magnitude substantially in the upstream (74) or downstream direction (72).

A method of manufacturing geopolymer tubes comprises forming a geopolymer composition comprised of an aluminosilicate source and an alkali activator, wherein the geopolymer composition has a fluid consistency and a shear thinning index of greater than 1.05, transferring the geopolymer composition into a tubular mold, rotating the mold to shear and distribute the composition onto the inner wall of the mold until the geopolymer composition reaches non-flowable consistency, and curing the geopolymer in the mold to form geopolymer tubes. A method for making geopolymer tubes with the disclosed geopolymer composition comprises shearing the geopolymer composition in a tubular mold at a high rotational speed to significantly reduce apparent viscosity to form the tubular shape, at least in the initial process stage. A ceramic tube made from the geopolymer composition of the present invention is used as a membrane or adsorbent for filtration applications.

A method of manufacturing geopolymer tubes comprises forming a geopolymer composition comprised of an aluminosilicate source and an alkali activator, wherein the geopolymer composition has a fluid consistency and a shear thinning index of greater than 1.05, transferring the geopolymer composition into a tubular mold, rotating the mold to shear and distribute the composition onto the inner wall of the mold until the geopolymer composition reaches non-flowable consistency, and curing the geopolymer in the mold to form geopolymer tubes. A method for making geopolymer tubes with the disclosed geopolymer composition comprises shearing the geopolymer composition in a tubular mold at a high rotational speed to significantly reduce apparent viscosity to form the tubular shape, at least in the initial process stage. A ceramic tube made from the geopolymer composition of the present invention is used as a membrane or adsorbent for filtration applications.

The present invention is related to a method for producing a ceramic multilayer blank comprising at least a first layer of a first ceramic material and at least a second layer of a second ceramic material, wherein the first layer and the second layer are made of ceramic materials of different compositions, which are filled in pourable condition layer-by-layer into a mold and thereafter they are pressed and then sintered, wherein the first layer is a pink colored layer, wherein the first ceramic material comprises 2 to 25 wt % erbium oxide.

The present description relates to methods of producing a wet-cast slag-based concrete product particularly where the wet-cast slag-based concrete product is cast, pre-conditioned and cured with carbon dioxide inside a mould and/or inside a mould placed in a curing chamber. The wet-cast slag-based concrete product is optionally reinforced.