The invention comprises a product. The product comprises a first removable concrete form having a concrete forming face and a first insulating panel insert having a first primary surface and an opposite second primary surface, wherein the second primary surface of the first insulating panel insert contacts the concrete forming face of the first removable concrete form. The product also comprises an elongate anchor member having an enlarged portion and an elongate portion, the elongate portion having a first end and an opposite second end, wherein the enlarged portion is disposed adjacent the first end and contacts the second primary surface of the first insulating panel insert and wherein the elongate portion extends through the first insulating panel insert and extends outwardly from the first primary surface of the first insulating panel insert. A method of using a removable insulated concrete form system is also disclosed.

A rebar positioning device with opposite ends for positioning adjacent to a form face of at least one form panel may include a support rod having opposite ends and an outer surface, with at least a portion of the outer surface being threaded. At least one bar clip may be movably mounted on the support rod. An orientation of the at least one bar clip on the support rod is adjustable, and a position of the at least one bar clip on the support rod is adjustable.

The invention relates to a spacer (1) for a reinforcement layer (16), a reinforcement system (29) for a concrete component (21), and a method for the production of a reinforcement system (29). The spacers (1) described allow especially mesh-type reinforcement layers (16) to be kept at a distance from other bodies (24, 28) in a particularly simple manner. The spacers (1) are fitted by inserting them into a mesh (8) of the reinforcement layer (16) and connecting them thereto by twisting.

Stackable wall spacer adapted for automated distribution using a feeder device and adapted to support a reinforcement grid, where the wall spacer comprises a plurality of leg sections each having a lower foot adapted to be placed on a mold surface for the concrete, where a plurality of wall spacers can be stacked in each other with the feet of one wall spacer extending into corresponding voids of a subsequent wall spacer, where the side wall of a leg section is parallel with the side wall of a leg section of a subsequent wall spacer. The advantage of the invention is that the wall spacers can be stacked in a space saving manner in each other, which allows a cost-efficient storage and transportation of wall spacers. The invention further allows for wall spacers that can be distributed by using a hand-held or automatic feeder device. Further, a reinforcement grid can be supported by a wall spacer regardless of the position of the spacer.

A wind turbine foundation comprising a concrete support slab having a horizontal rebar grid therein, a concrete pedestal integral with the support slab and having vertical post tensioning elements therein and a plurality of concrete ribs on top of and integral with the support slab and integral with the pedestal, the ribs having rebar therein and extend outwardly from the pedestal, the pedestal, slab and ribs are connected to each other to form a monolithic foundation. The foundation design reduces the weight and volume of materials used, reduces cost, and improves heat dissipation conditions during construction by having a small ratio of concrete mass to surface area thus eliminating the risk of thermal cracking due to heat of hydration.

A shallow foundation form and method of using are provided. The form is useful for pouring concrete slab foundations and results in a frost protected foundation with improved thermal characteristics. The form may include brackets to hold rebar at various locations. The brackets are designed to avoid the use of fastening devices, such as wire ties. When used to pour a concrete foundation, the form and brackets reduce construction material input costs, reduce the amount of skilled labor required, and reduce the amount of time required to pour a foundation.

A reinforcing element includes a first and a second reinforcing mat having metal mat rods, which are welded at angles to each other at junction points, which reinforcing mats are held spaced apart from each other at a normal distance by rod-shaped spacers with respect to the first mat plane and the second mat plane of the reinforcing mats. The spacers are metal and are permanently connected to individual mat rods of the first and second reinforcing mat by welding connections, preferably resistance welding connections, wherein at least individual spacers protrude outward at least beyond the first mat plane of the first reinforcing mat in a direction pointing away from the second reinforcing mat by a first protrusion length. Further, a double wall is furnished with the reinforcing element and a method produces the reinforcing element and the double wall.

In exemplary implementations of this invention, a nozzle sprays foam, layer by layer, to fabricate a fabricated object according to a CAD model, and a subtractive fabrication tool removes material from the fabricated object according to a CAD model. The fabricated object comprises a mold or an interior form. The foam may be low-density, high strength and fast-curing. The foam may be used for large-scale 3D printing. For example, the foam may be used to 3D print molds for walls of homes. The foam molds may be left in place, after casting concrete in the molds, to serve as insulation. Or for example, the foam may be used to 3D print on site an internal form for a large wind turbine blade. The wind turbine blade may then be produced on site by depositing fiberglass on the outside of the internal form.

A panel of a structure is provided that includes a first layer of material, a second layer of material, a filler material between the first layer of material and the second layer of material, and a bracket connected to the first layer of material. The bracket has a bottom flange spaced from the first layer of material. The filler material is between the first layer of material and the bottom flange securing the first layer of material to the filler material to function as an anchor and to provide embedment strength.

A bamboo composite material for structural applications and method of fabricating the same are provided. The method can comprise the steps of providing a bamboo culm; separating a slice or sheet from the bamboo culm such that the slice or sheet has a longitudinal axis along a fiber direction of the bamboo culm; at least partially detaching individual fiber bundles of the slice or sheet from each other along the longitudinal axis of the slice or sheet; applying a glue to the slice or sheet; and curing the glued slice or sheet.