A concrete form panel for a concrete formwork includes: a foam body having a concrete-facing surface and an outward-facing surface opposite the concrete-facing surface, the outward-facing surface having a plurality of slots formed therein; and a plurality of structural elements. Each structural element is accommodated in a respective slot, and has apertures formed therein for accommodating ties.

In a one aspect there is disclosed a formwork wall panel (10) having an operative inner surface (12) to face towards an inner space to be filed with building material and an opposing operative outer surface (14) having a surface finishing component (16) secured thereto. The operative inner surface (12) of the formwork wall panel (10) includes a brace coupling formation (18) operatively adapted to engage a wall panel coupling formation (20) of a brace (22) operatively extending between the formwork wall panel (10) and an opposing second formwork wall panel.

The disclosure presents a composite concrete structure formwork which comprises stay in place fiberglass profiles and reinforcement to form various building and shelter structures. The structures include an interior container maintained at a set distance within an exterior container to form a void. The void is filled with wet concrete which is allowed to cure. All of the components in a preferred embodiment are formed of a fiberglass material.

A building formwork component comprising first and second spaced sidewalls having one or more webs extending there-between, each sidewall comprising a flange extending inwardly along a first edge of the sidewall such that an outer surface of the flange forms a ramp surface; and a groove extending along an opposing second edge of the sidewall. The component may be coupled to a like component by relative movement of the components towards each other, whereby the flanges are received in respective grooves of the like component, and whereby the ramp surfaces facilitate such coupling by engaging respective second edges of the like component to move the second edges and/or ramp surfaces for engagement of the flanges in the grooves.

Disclosed is a form work system (100) that comprises first (102a) and second (102b) building formwork components that are connected by a building formwork connector (104) The connector (104) comprises a moveable portion (128) that is moveable from a closed position to an open position. In the closed position, one or more sidewalls of the connector (104) define a cavity (144) for receipt of cementitious material. The cavity (144) of the connector (104) is located with respect to cavities (110) of the first (102a) and second (102b) formwork components. In the open position, access is provided to the cavity (144) of the connector (104).

The disclosure presents a formwork system which utilizes Fiber Reinforced Polymer (FRP) panels to create modular segments to form and reinforce concrete subgrade structures. The segments may be rearranged and bonded together to conform to intended dimensions of many subgrade structures. The segments are manufactured by cast molding, bonding or vacuum forming. The segments may include integrated FRP stanchions to prevent deflection of the panels during concrete placement. The stanchions also may be used for positioning structural steel or FRP rebar. FRP bars are permanently bonded to the interior sides of the panels inside the segments. In use, the assembled segments are filled with concrete. After the concrete is cured, the segments remain in place and function as external protection and reinforcement for the cured concrete.

A building structure assembly for use with constructing buildings (e.g., dwellings, offices, and so on) is described. In some embodiments, the building structure assembly includes a fillable container structure formed of a drop stitch fabric or material, and a removable shoring structure configured to position the container structure in a desired configuration when filled by building material, such as cement or concrete. In some cases, the container structure can include reinforcement components, which move into suitable positions when the container structure is filled with the building material.

An elongated building element (14) having a pair of longitudinally extending generally parallel co-extensive side walls (15) joined by transverse webs (16). The walls (15) and webs (16) enclose a longitudinally extending space (30) within which there is located a tube (31). The tube (31) is connected to the walls (15) and webs (16) by flanges (33). The tube (31) provides a space (33) with the spaces (30, 33) being intended to be filled with concrete. The building element (14) is intended to be attached to light elements (14) to form a wall.

A concrete corner structure with diagonally oriented fiber resin polymer rebar and method that utilizes straight rebar to reinforce the corner structure. The straight rebar intersects with the horizontally disposed rebar in the first and second walls that form the corner structure. The straight rebar is placed at a 45-degree angle with respect to the two walls and tied to the horizontally disposed rebar. This allows for the use of straight rebar to reinforce the corner structure as opposed to a curved rebar.

A concrete corner structure with diagonally oriented fiber resin polymer rebar and method that utilizes straight rebar to reinforce the corner structure. The straight rebar intersects with the horizontally disposed rebar in the first and second walls that form the corner structure. The straight rebar is placed at a 45-degree angle with respect to the two walls and tied to the horizontally disposed rebar. This allows for the use of straight rebar to reinforce the corner structure as opposed to a curved rebar.