The invention relates to a three-dimensional screen printing method for producing a green part from printing material for a powder metallurgical component, wherein the printing material contains a fraction of powder, more particularly metal powder or ceramic powder, and binder or consists of these materials, characterized in that a screen printing mask has a screen printing structure having openings for pressing the printing material through, the openings being partly undulate so that the green part at least partly has a three-dimensional undulate structure and/or undulate edges.

An additive manufacturing method for producing a component having at least partially or at least locally a porous material structure includes providing a porous or porosable base material, applying the porous or porosable base material to build up the component, and adjusting a porosity of the porous or porosable base material during the applying.

In a hydraulic composition for additive manufacturing which includes (A) at least one water-soluble hydroxyalkyl alkyl cellulose selected from hydroxypropyl methyl cellulose and hydroxyethyl methyl cellulose, (B) a defoamer, (C) cement, (D) water and (E) diutan gum, the water-soluble hydroxyalkyl alkyl cellulose has an alkoxy group degree of substitution of from 1.6 to 2.0 and a 2 wt % aqueous-solution viscosity at 20° C. of from 50 to 1,000 mPa.Math.s and the water is added in an amount of from 25 to 70 parts by weight per 100 parts by weight of the cement. The composition has a good extrudability from a nozzle and a good self-supportability following deposition.

In a hydraulic composition for additive manufacturing which includes (A) at least one water-soluble hydroxyalkyl alkyl cellulose selected from hydroxypropyl methyl cellulose and hydroxyethyl methyl cellulose, (B) a defoamer, (C) cement, (D) water, (E) polyvinyl alcohol and (F) borax, the water-soluble hydroxyalkyl alkyl cellulose has an alkoxy group degree of substitution of from 1.6 to 2.0 and a 2 wt % aqueous-solution viscosity at 20° C. of from 50 to 1,000 mPa.Math.s, the polyvinyl alcohol has a degree of saponification of from 70 to 90 mol % and a 4 wt % aqueous-solution viscosity at 20° C. of from 20 to 80 mPa.Math.s, and the water is added in an amount of from 25 to 70 parts by weight per 100 parts by weight of the cement. The composition has a good extrudability from a nozzle and a good self-supportability following deposition.

A porous body for an electronic vaporization device includes: a first surface; a second surface opposite the first surface; and at least two unit layers sequentially arranged along a direction from the first surface to the second surface, one layer of the at least two unit layers including at least a liquid storage advantage layer or a liquid locking advantage layer, and each other unit layer of the at least two unit layers including a liquid storage advantage layer and a liquid locking advantage layer combined with the liquid storage advantage layer.

A vaporization core for an electronic vaporization device includes: a porous body; and a heating film arranged on a surface of the porous body. The porous body has at least one unit layer, the at least one unit layer having a liquid storage advantage layer and a liquid locking advantage layer combined with the liquid storage advantage layer. The heating film is combined with a surface of the liquid locking advantage layer and at least partially infiltrates in the liquid locking advantage layer.

An application and a composition of bioremediation agents and cremated remains forming underwater sanctuaries and structures by coral reefs comprising a homogenous mixture of calcium compounds, clay, cement, earthworm enzymes, and human/animal ashes. The composition will benefit nearby reefs with added calcium for rehabilitating reefs and earthworm enzymes with detoxifying properties. The underwater sanctuaries and structures will provide habitats for wildlife.

An accelerator for mineral binder compositions, especially for mortars or concrete, including: aluminium sulfate, at least one pozzolane, optionally at least one defoamer, and water. The accelerator is particularly useful for shotcrete, in the field of free-forming construction, or for additive manufacturing.

A concrete construction (100) made by 3D concrete printing that contains: two or more layers (102, 106) of cementitious material extruded one above the other, and at least one elongated steel element (104) reinforcing at least one of the layers (102, 106). The elongated steel element (104) has an elastic and plastic elongation at break that exceeds 4%. The high elongation of the elongated steel element gives an increased ductility to the concrete structure (100).

A dry cementitious material mixture for 3D-printing, includes a hydraulic cement, at least one viscosity enhancing admixture, at least one accelerator and aggregates, wherein the at least one viscosity enhancing admixture is present in an amount of 0.05-1.5% by weight based on the hydraulic cement and the at least one accelerator is present in an amount of 0.5-6.0% by weight based on the hydraulic cement.