Methods for manufacturing a composite concrete structure are provided. A method can include utilizing a shell formwork with a displacement piece positioned therein. A first type of concrete can be placed in the shell formwork around the displacement piece. The displacement piece, when removed, leaves a void that is fillable with a second type of concrete for form the composite concrete structure. A reinforcement cage or reinforcement rods can be incorporated into the void prior to placement of the second type of concrete.

Methods for manufacturing a composite concrete structure are provided. A method can include utilizing a shell formwork with a displacement piece positioned therein. A first type of concrete can be placed in the shell formwork around the displacement piece. The displacement piece, when removed, leaves a void that is tillable with a second type of concrete for form the composite concrete structure. A reinforcement cage or reinforcement rods can be incorporated into the void prior to placement of the second type of concrete.

An apparatus for forming a concrete column is disclosed. The apparatus may include a first column form half and a second column form half, which may be designed to be fitted together. The apparatus may also include a fastening system having at least one brace and a plurality of straps to fasten the first column form half with the second column form half to form a full column form. The full column form may then be filled with a poured concrete mixture, which when hardened or cured, may be a concrete column used in any number of structural or design applications.

A collar assembly of or for a tower being formed by progressively higher concrete composition pours into reinforcement including formwork defined cavities, the assembly comprising or including; a higher subassembly adapted as a collar to selectively index to a zone of the tower being formed, a lower subassembly adapted as a collar to selectively index to a zone of the tower being formed, and a jacking arrangement whereby (I), when the lower subassembly is zone indexed and the higher subassembly is not, the higher subassembly can be raised relative to the lower subassembly and the zone to a fresh indexing height and (II), when the higher subassembly is zone indexed and the lower subassembly is not, the lower subassembly can be raised to a fresh indexing height.

An apparatus for a stay-in-place form assembly comprises a plurality of elongated panels connectable to one another in edge-to-edge relationship. The plurality of panels comprise first and second panels connectable to one another at a connection between a generally male connector component of the first panel and a generally female connector component of the second panel. The generally female connector component comprises a female engagement portion which defines a principal receptacle and the generally male connector component comprises a male engagement portion which is received in the principal receptacle to form the connection. The generally female connector component comprises a first abutment portion and the generally male connector component comprises a second abutment portion which abuts against the first abutment portion to form the connection. The first and second abutment portions are located outside of the principal receptacle.

A formwork assembly including a plurality of formwork elements defining a concrete-receiving space, at least one of the plurality of formwork elements comprising a first panel, at least one support waler configured to receive at least one vertical fixation element and comprising a second panel, a horizontal fixation element configured to engage with the first panel and the second panel such that rotation of the horizontal fixation element allows for the at least one vertical fixation element to be freely removed from the at least one support waler after curing of concrete in the concrete-receiving space.

A precision fabrication form system for preparing a poured-concrete (with upwardly projecting anchor bolts) footing for anchorably supporting the base of an elongate, upright, structural-frame column. The system includes a reversibly stackable plurality of independent, intercooperative, fabrication-form templatesgrade, pedestal, base-plate, anchor-bolt and centerlinereversibly assembleable in a predetermined stack order above a prepared ground excavation into which concrete pouring to be associated with such a footing is to occur, certain ones of these templates being infinitely adjustable relative to one another and to the ground in both pre-pour and post-pour conditions to accommodate staged, precision, X-axis, Y-axis, Z-axis, and pitch, roll and yaw axes dispositions for the concrete and anchor bolts in such a footing.

Embodiments of modular building units (blocks) are disclosed that can be stacked to provide insulating concrete forms (ICFs). The blocks are formed of a foamed polymer material, such as foamed polyurethane. The blocks, when assembled together in an ICF, are configured to form one or more vertical columns of concrete and one or more horizontal beams of concrete intersecting the one or more columns, in a manner of post and beam construction. The blocks can be tightly interlocked with other blocks in a construction process. The disclosed blocks can include significant interior space for rebar and concrete to be inserted to construct the structure. Molds and methods for producing modular units are also disclosed. The molds and methods enable rapid production and removal of modular building units from the molds. Methods of constructing structures using the modular building units are also disclosed.

Embodiments of modular building units (blocks) are disclosed that can be stacked to provide insulating concrete forms (ICFs). The blocks are formed of a foamed polymer material, such as foamed polyurethane. The blocks, when assembled together in an ICF, are configured to form one or more vertical columns of concrete and one or more horizontal beams of concrete intersecting the one or more columns, in a manner of post and beam construction. The blocks can be tightly interlocked with other blocks in a construction process. The disclosed blocks can include significant interior space for rebar and concrete to be inserted to construct the structure. Molds and methods for producing modular units are also disclosed. The molds and methods enable rapid production and removal of modular building units from the molds. Methods of constructing structures using the modular building units are also disclosed.

There is provided a method for forming a pattern or a shape in a concrete wall structure, the method comprising: mixing a cement about 100% by weight and silicon about 50% by weight to form a mixed silicon; inserting the mixed silicon into a forming frame; pressing a pressing member onto the first surface and removing the pressing member from the first surface; attaching the forming frame onto the form; placing and curing a concrete to the surface of the mixed silicon in which the shape or pattern is defined; and removing the mixed silicon from the cured concrete, thereby to obtain a concrete wall structure having the three-dimensional pattern or shape formed therein.