The present invention discloses a construction method for a spatial aggregate reinforced 3D printed concrete structure, including: selecting a structural member, performing mechanical analysis, and determining a basic dosage and a printing and weaving process of an implanted reinforcement or braided rope/wire material, determining a type, positioning and dosage of a spatial aggregate, preparing 3D printing materials, editing an electromagnetic signal and positioning push program of the spatial rigid aggregate according to the selected positioning and dosage of the spatial rigid aggregate, the 3D printing material is extruded along the printing and weaving process and while the reinforcement is implanted or the rope/wire is woven into the space, the spatial rigid aggregate is evenly scattered, and realizing the connection between spatial aggregates and the connection between the spatial aggregates and the reinforcements or ropes/wires respectively, a spatial aggregate reinforced 3D printed concrete structure is formed at one time after layer-by-layer construction, superimposed and hardened, or after segmented printing, component nodes can be connected through lap design of preset tenon and mortise and reinforcement or rope/wire to form the spatial aggregate reinforced 3D printed concrete structure. The construction method a form continuous reinforced spatial aggregates, effectively improve the mechanical performance of the concrete structure space, and improve the tensile strength and crack resistance of the concrete structure space.

Methods and ceramic matrix composite articles formed thereby, as well as systems for making such ceramic matrix composite articles and carrying out such methods are disclosed herein. The methods include preparing a ceramic matrix composite by steps including (a) providing reinforcing fiber, such as carbon fiber, for impregnation; (b) heat treating the reinforcing fiber; (c) impregnating the heat treated reinforcing fiber with a composition comprising a ceramic forming polymer to form a fiber reinforced, ceramic forming polymer pre-preg; and (d) heat molding the fiber reinforced, ceramic forming polymer pre-preg to form a molded ceramic matrix composite article.

An aspect concerns a method (10) of producing a precast building product. The method (10) includes providing a mould (26) to receive a pourable building substance to be cured. The method further includes the steps of pouring the building substance into the mould and allowing the poured building substance to cure inside the mould to form a sold mass body. The method further includes providing a wire-cutting assembly operatively associated with the mould and cutting the solid mass body inside the mould into separate building products.

An apparatus and a method for preparing a multi-directional continuous fiber-reinforced composite material. The apparatus includes an electrostatic fiber-splitting device configured to controllably split a fiber bundle, a powder spreading device configured to spread a powder, and a pre-press molding device configured to cut the fiber and compact the powder. The electrostatic fiber-splitting device includes a rotatable fiber-splitting table. The pressing plate is controlled by an electromagnet, and the pressing plate is energized to generate a high-voltage electrostatic field to disperse the continuous fiber bundle into monofilament fibers.

An apparatus and a method for preparing a multi-directional continuous fiber-reinforced composite material. The apparatus includes an electrostatic fiber-splitting device configured to controllably split a fiber bundle, a powder spreading device configured to spread a powder, and a pre-press molding device configured to cut the fiber and compact the powder. The electrostatic fiber-splitting device includes a rotatable fiber-splitting table. The pressing plate is controlled by an electromagnet, and the pressing plate is energized to generate a high-voltage electrostatic field to disperse the continuous fiber bundle into monofilament fibers.

A wall assembly for a building structure, uses (i) an inner shell cast in a first mold to define a first panel of concrete having a plurality of stiffener members embedded in the concrete so as to be at least partly exposed at the inner side of the panel, and (ii) an outer shell cast in a second mold to define a second panel of concrete having a plurality of stiffener members embedded in the concrete so as to be at least partly exposed at the inner side of the panel. The inner shell and the outer shell are mechanically coupled after casting to define a mold cavity between the inner sides of the panels. Field concrete can be cast into the mold cavity between the inner and outer shells once the wall assembly is mounted on site into position within the building structure.

The present invention relates to a method for casting building material to form a construction element using a computer-controlled apparatus. The method comprises the steps of: moving the material deposition head and selectively depositing material, to fabricate a formwork; pouring building material in contact with at least a portion of the formwork; at least partially curing the building material, thereby forming the construction element; and removing at least a portion of the formwork from the construction element.

The present invention relates to a method for casting building material to form a construction element using a computer-controlled apparatus. The method comprises the steps of: moving the material deposition head and selectively depositing material, to fabricate a formwork; pouring building material in contact with at least a portion of the formwork; at least partially curing the building material, thereby forming the construction element; and removing at least a portion of the formwork from the construction element.

Devices and methods for forming voids or cavities in concrete such that reinforcing bars can be used to connect different pours of concrete, the devices including an insert having a base and an elongate member extending from the base, and the method including coupling the insert to formwork, pouring concrete into the formwork, which surrounds the insert, allowing the concrete to partially cure, such that it retains its shape, removing the formwork and insert to form a void in the partially cured concrete, inserting a reinforcing bar into the void, applying adhesive to adhere the reinforcing bar to the concrete, and pouring concrete around the reinforcing bar, such that the reinforcing bar joins the two pours of concrete together via the void and adhesive.

A prefabricated superimposed recycled lump concrete slab includes a fresh concrete, demolished concrete lumps, and a reinforcement fabric at a lower part of the slab. The demolished concrete lumps can protrude from the fresh concrete, but a protruding height is no more than 25 mm, and the protruding height is controlled by assembling molds. The assembling molds comprise casting molds and a height-controlling cover plate, reinforcement-locating slots are reserved on side molds of the casting molds, and a vertical position of the height-controlling is determined by using screws, position-controlling nuts and gaskets of different thicknesses, which are located at four corners of the casting molds. A construction method of the prefabricated superimposed recycled lump concrete slab is also provided.