The invention relates to a shuttering element and to a method for constructing a concrete structure in a cavity. The shuttering element according to the invention is intended for the construction of a vertical wall of a concrete structure intended to contain a liquid. The shuttering element (100) comprises a first shuttering panel (110) made of perforated sheet metal, a second shuttering panel (120) made of fiber cement, and a plurality of spacers (130). It is possible to use the shuttering element (100) reversibly in the construction method. The construction method allows the production of a one-piece reinforced concrete structure which is dimensionally stable and not likely to crack. Furthermore, it is readily possible to widen the upper leveling of the walls in order to support the curbstones without any risk of cracks and/or breakages. Furthermore, the structure is variable while being compatible with any finishing covering.

The disclosure relates to a formwork panel comprising: a formwork panel member having a front side for delimiting a space to be filled with concrete, a back side opposite the front side and a through-opening extending from the front side to the back side for allowing passage of a tie rod therethrough, the through-opening having a first cross-sectional area; an adjustment member extending across the through-opening of the formwork panel member, the adjustment member having a through-hole with a second cross-sectional area smaller than the first cross-sectional area of the through-opening of the formwork panel member, the through-hole being moveable relative to the front side of the formwork panel member. Furthermore, the disclosure relates to a formwork system and a method using such formwork panel.

A portable, handheld implement for disjoining protruding concrete ties from reinforced concrete, the handheld implement adapted to apply successive bending and breaking forces to concrete ties, rebar, and the like. An L-shaped head, or chevron-shaped head, in some embodiments, receives the protruding concrete tie and coacts therewith to shear a concrete tie or rebar from a typically planar concrete surface using successive, longitudinally-applied handheld force. A concrete tie is inserted into a recess in the head of the implement designed to securely receive it. Some embodiments of the present invention comprise two L-shaped heads, on at either end of the handle.

A portable, handheld implement for disjoining protruding concrete ties from reinforced concrete, the handheld implement adapted to apply successive bending and breaking forces to concrete ties, rebar, and the like. An L-shaped head, or chevron-shaped head, in some embodiments, receives the protruding concrete tie and coacts therewith to shear a concrete tie or rebar from a typically planar concrete surface using successive, longitudinally-applied handheld force. A concrete tie is inserted into a recess in the head of the implement designed to securely receive it. Some embodiments of the present invention comprise two L-shaped heads, on at either end of the handle.

A formwork panel including: a formwork panel member having a front side for delimiting a space to be filled with concrete, a back side opposite the front side and a through-opening extending from the front side to the back side for allowing passage of a tie rod therethrough, the through-opening having a first cross-sectional area; an adjustment member extending across the through-opening of the formwork panel member, the adjustment member having a through-hole with a second cross-sectional area smaller than the first cross-sectional area of the through-opening of the formwork panel member, the through-hole being moveable relative to the front side of the formwork panel member; the adjustment member having a disc element with the through-hole formed therein, wherein the disc element covers the through-opening of the formwork panel member except for the through-hole of the disc element.

The present invention provides a transmitter for predicting stress on a formwork element (10) during and/or after pouring a building material (M), in particular concrete, into a space enclosed by a formwork (2) including the formwork element (10), the formwork element (10) comprising a form face (12) and a support structure (14) which is attached to the form face (12) and supporting the form face (12), wherein the form face (12) is separated from or integrated into the support structure (14), the system (1) comprising data acquisition means (16a, 16b, 16c, 16d, 16e), at least one sensor unit (18a, 18b, 18c, 18d, 18e), a control unit (20a, 20b, 20c, 20d, 20e) and a transmission unit (22a, 22b, 22c, 22d, 22e).

The present invention provides a transmitter for predicting stress on a formwork element (10) during and/or after pouring a building material (M), in particular concrete, into a space enclosed by a formwork (2) including the formwork element (10), the formwork element (10) comprising a form face (12) and a support structure (14) which is attached to the form face (12) and supporting the form face (12), wherein the form face (12) is separated from or integrated into the support structure (14), the system (1) comprising data acquisition means (16a, 16b, 16c, 16d, 16e), at least one sensor unit (18a, 18b, 18c, 18d, 18e), a control unit (20a, 20b, 20c, 20d, 20e) and a transmission unit (22a, 22b, 22c, 22d, 22e).

A tie rod suitable for use with known concrete forming systems is constructed from a non-metal fiber, such as fiberglass, that is wound about a pair of opposed thimble elements. The resultant tie rod is as strong as a metal tie rod without the drawbacks of conventional metal tie rods. Each of the thimble elements has a main body having a channel formed in an outer surface of the main body, and the fiberglass fiber is disposed within the channel when wound thereabout.

A tie rod suitable for use with known concrete forming systems is constructed from a non-metal fiber, such as fiberglass, that is wound about a pair of opposed thimble elements. The resultant tie rod is as strong as a metal tie rod without the drawbacks of conventional metal tie rods. Each of the thimble elements has a main body having a channel formed in an outer surface of the main body, and the fiberglass fiber is disposed within the channel when wound thereabout.

A transmitter for predicting stress on a formwork element during and/or after pouring a building material, in particular concrete, into a space enclosed by a formwork including the formwork element, the formwork element comprising a form face and a support structure which is attached to the form face and supporting the form face, wherein the form face is separated from or integrated into the support structure, the system comprising data acquisition means, at least one sensor unit, a control unit and a transmission unit.