A method for producing a precast concrete tower segment of a wind turbine tower is provided. An inner formwork having at least one bore and at least one holding unit on an inner side of the inner formwork in the region of the bore is placed. A first end of a concrete anchor or a first end of a removable element at the first end of the concrete anchor is introduced from the outer side of the inner formwork through the bore into the holding unit in order to hold the concrete anchor. An outer formwork is placed. Concrete is introduced between the inner and outer formwork. The removable element in the first end or the first end of the concrete anchor is removed and the precast concrete segment is removed.

Concrete coupling assembly comprises a base holder for being attached to a concrete forming surface, the base holder including a central opening; a coupler having one end disposed within the central opening, the coupler having an axis for being positioned substantially transverse to the forming surface, the coupler having first and second threaded bores through the one end for attachment of a threaded rod; and a separate anchor body threadedly attached to another end of the coupler.

A pre-stressed concrete body is disclosed. The concrete body is elongated with a first end and an opposite second end. A plurality of reinforcement strands within the concrete body extend from the first end to the second end and impart a compressive force. A baseplate is disposed on the first end, and has a plurality of first fastener receiving holes and a plurality of second fastener receiving holes.

An erosion control mat provides a plurality of concrete blocks. Each block has an upper portion with a plurality of upper inclined side walls. Each block has a lower portion with a plurality of inclined lower side walls. The block has an upper surface and a lower surface and a block periphery in the form of an edge where the upper and lower side walls meet. Cables or ropes connect the blocks together to form a block matrix and the erosion control mat. Each block has a boot affixed to the block lower portion, the boot having a plurality of inclined side panels. Each boot side panel has an upper edge. The boot has a lower panel, a boot interior surface and an interior that is receptive of at least part of the block lower portion. The boot inclined side panels engage the block inclined lower side walls. The boot lower panel engages the block lower surface. A plurality of anchor posts are attached to the interior surface of the boot. Some of the anchor posts are attached to the side wall panels to enable a connection to be formed between the boot inclined side panels and the block inclined lower side walls. Some of the anchor posts are attached to the lower panel of the boot to enable a connection to be formed between the boot lower panel and the block lower surface. As part of the method, the boot is first placed in a mould. Slurried concrete is then added to the mould so that a connection is formed between the boot anchor posts and the concrete when the concrete sets after a time period.

A recess former is disclosed for use with anchors which are to be cast into a concrete slab. The recess former preferably includes a removable plug and preferably rectangular lugs which engage with corresponding apertures in the attachment head of the lifting anchor and prevent the ingress of cement during casting of the slab. In addition, flaps are preferably provided on the recess former to prevent the sides of the attachment head from being encased in the concrete. Preferably the former is pivoted between open and closed positions and has a slightly V-shaped base which when abutted against a mould or formwork, urges the recess former into the closed position. Furthermore, a recess former is disclosed which stays behind after the casting and remains embedded in the concrete in order to provide a waterproof membrane between the recess and adjacent reinforcing rods thereby preventing corrosion of the reinforcing rods.

A configurable mold for concrete-casting, methods of use and method using the configurable mold.

A top-down construction type assembly construction method for paved road surface, including the following steps: step I, manufacturing prefabricating slabs: using a top-down method to manufacture the prefabricating slabs, and providing bolt sleeves, inside the prefabricating slabs, which are evenly arranged in the prefabricating slabs; step II, mounting the prefabricating slabs: on a lower bearing plate, placing the prefabricating slabs in one step, performing a fine tuning on a position and an altitude of the prefabricating slabs, performing a grouting construction, finally forming the paved road surface; the prefabricating slabs are manufactured by laying bricks and pouring concrete, the prefabricating slabs are rolled over and mounted, thus eliminating on-site concrete bonding between bricks and the lower bearing plate, improving overall stability of the bricks and the prefabricating slabs after being mounted, assembled mounting for a paved road surface is implemented, and the construction period is shortened.

A top-down construction type assembly construction method for paved road surface, including the following steps: step I, manufacturing prefabricating slabs: using a top-down method to manufacture the prefabricating slabs, and providing bolt sleeves, inside the prefabricating slabs, which are evenly arranged in the prefabricating slabs; step II, mounting the prefabricating slabs: on a lower bearing plate, placing the prefabricating slabs in one step, performing a fine tuning on a position and an altitude of the prefabricating slabs, performing a grouting construction, finally forming the paved road surface; the prefabricating slabs are manufactured by laying bricks and pouring concrete, the prefabricating slabs are rolled over and mounted, thus eliminating on-site concrete bonding between bricks and the lower bearing plate, improving overall stability of the bricks and the prefabricating slabs after being mounted, assembled mounting for a paved road surface is implemented, and the construction period is shortened.

The present invention relates to a method for producing a tower segment of a concrete tower of a wind energy installation, comprising the steps: providing a segment mold having at least one formwork for defining a mold of the tower segment that is to be produced and for filling with concrete; filling the segment mold with concrete in order to form the tower segment by the subsequent hardening of the concrete; measuring the tower segment thus hardened for creating a three-dimensional, virtual actual model of said tower segment; producing said three-dimensional actual model; comparing the three-dimensional actual model with a predefined mold, in particular a stored three-dimensional, virtual target model; and determining a deviation between both virtual models and changing the segment mold, in particular changing the at least one formwork when the deviation exceeds a first predefined threshold value.

The disclosure relates to a formwork device for manufacturing a construction element, in particular a plate-shaped precast concrete element, said formwork device comprising a formwork element and a transport anchor for positioning within the construction element, the transport anchor having a connecting part for connecting a lifting device and a shear force part for introducing a shear force into the construction element, the transport anchor having a first connecting element for connecting the transport anchor to the formwork element and/or a second connecting element for connecting the transport anchor to a support element for supporting the construction element.