DE8913115U1 - Reinforcement element for concrete parts - Google Patents

Description

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Reinforcement element for concrete parts Technical area

This regulation concerns a reinforcement element for concrete parts with a reinforcement bar with at least two spacers fixed to it to: ensure a uniform distance between the formwork and the reinforcement when concreting and thus a uniform concrete cover of the reinforcement.

Such reinforcement elements are used in particular in the production of prefabricated concrete elements, such as wall or ceiling panels, etc., in the factory, but less so on the construction site.

State of the art

Reinforcement elements of the type mentioned are known in many different designs, the spacers are usually made of plastic and are injected onto the steel reinforcement bar in complex injection molding machines. Due to this

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technology, the injected plastic parts enclose the reinforcement bar and therefore inevitably protrude over it on all sides.

However, Letseras is associated with a not insignificant disadvantage, namely, when manufacturing precast concrete elements in the factory, a plurality of reinforcement elements of the present type, arranged parallel to one another, are usually used as the lowest reinforcement level.
another reinforcement level is placed across it. Wire mesh is often used for this additional reinforcement level. If such a wire mesh does not lie in the desired position immediately after it is first placed on the lower reinforcement elements, it must be adjusted later. This is particularly hindered or even impossible with the known reinforcement elements by the spacers that protrude over the reinforcement bars on all sides, including on the support side of the wire mesh. A wire mesh is practically immovable on the known reinforcement elements. It must be completely lifted off again in order to be able to be placed in the desired position.

Presentation of the innovation

The particular purpose of this innovation is to provide a reinforcement element of the type mentioned above which avoids the aforementioned disadvantages and which is inexpensive and easy to manufacture. DicSc

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is solved according to the innovation by a reinforcement element with the features of claim 1. Advantageous embodiments are characterized in the dependent claims.

According to the innovation, the reinforcement bar is glued to the spacers on the top side opposite their support side on the formwork, with the shape of the spacers being chosen so that the upper longitudinal edge of the reinforcement bar is arranged at least at the same height as the top side of the spacers above the formwork. As a result, the spacers no longer protrude above the reinforcement bar and therefore cannot hinder the movement of a wire mesh along the reinforcement bar.

According to a preferred embodiment, the spacers are provided on their upper side with a longitudinal groove which at least partially accommodates the reinforcing bar.

The spacers are advantageously simply sections of an extruded profile strand, for example. The longitudinal groove on the spacers that accommodates the reinforcing bar can be obtained without any additional work by selecting the appropriate profile.

In view of the fact that any material other than concrete in the concrete cover of the reinforcement is detrimental,

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Another advantage is that the spacers are extruded from a concrete mass.

To protect against corrosion, the reinforcing bar can be plastic-coated.

For longer reinforcement elements (typical length approx. 2m) it is advantageous to provide more than just two spacers on the reinforcement bar, for example at a distance of 20 - 30 cm. The reinforcement bar can then also be bent, preferably zigzag or wave-shaped, so that the spacers are not arranged in a straight line. With such an embodiment it is also possible to choose the shape of the spacers so that they taper towards the formwork and only have an approximately point-shaped or linear support surface on it.

Short description of the drawings

Examples of implementation of the innovation are explained below using the attached drawings. The drawing shows:

Fig.l shows a perspective view of a reinforcement element with three spacers attached to it,

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Fig.2

the top view of another reinforcement element
with a curved reinforcement bar and

Fig.3

again in perspective view one of the spacers of the reinforcement element of Fig. 2.

Ways to implement the innovation

The reinforcement element of Fig. 1 comprises a reinforcement bar 1 made of steel, to which three spacers 2, 3 and 4 made of concrete are attached.

The spacers 2, 3 and 4 are sections of profile strands, whereby the profile is chosen differently for the purpose of illustration.

The reinforcement element shown rests flat on a formwork panel 5.

On their upper side facing away from the formwork panel 4, the spacers 2 and 3 each have a longitudinal groove due to the choice of their profile. The reinforcing bar 1 is glued into these longitudinal grooves. The spacer 4, on the other hand, has no longitudinal groove. Here the reinforcing bar is simply glued onto its upper side. The adhesive layer is designated with 6. The usual two-component adhesives are suitable for this purpose.

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The depth and width of the longitudinal grooves in spacers 2 and 3 are dimensioned such that the reinforcement bar is embedded in them as completely and tightly as possible for strength reasons, but with its upper edge at least at the same height as their upper sides.

The thickness of the spacers in the longitudinal direction of the reinforcement bar is selected approximately according to their height above the formwork in order to obtain a sufficient adhesive surface.

The spacer in Fig. 2 has a zigzag-shaped reinforcement bar 7. The spacers, only one of which is designated 8, are attached to the reinforcement bar near the bending points and are therefore not arranged in a line. The reinforcement element in Fig. 2 is therefore stable even if the spacers 8, as shown in Fig. 3, taper downwards towards the formwork and have only an approximately point- or line-shaped support surface on the formwork.

In summary, the subject of the Neue^u.*.^ is a
Reinforcement element for concrete parts with a reinforcing bar (1) with several spacers (2-4) fixed to it to ensure a uniform distance between formwork (5) and reinforcement during concreting and thus a uniform concrete cover of the reinforcement. In order to prevent the displacement of additional reinforcement placed transversely on the reinforcing element,

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In order not to hinder the reinforcement bars, the reinforcement bar is fixed to the B, spacers on their, their support side on the formwork &Ggr;

glued to the opposite top side, whereby the shape of the Ii

Spacers are selected so that the upper longitudinal edge of the ^vt reinforcement bar is arranged at least at the same height as the top of the spacers above the formwork.

Claims (9)

&bull; · · » I-I-I.! I &bull; · ·· · 1 Il 1 I &iacgr; : &bull; · · · I Il , 1 · · Ml III t. Claims 1. Reinforcement element for concrete parts with a reinforcing bar (1,7) with at least two fixed spacers (2-4,3) to ensure a uniform distance between the formwork (5) and the reinforcement during concreting and thus a uniform concrete cover of the reinforcement, characterized in that the reinforcing bar is glued to the spacers on their upper side opposite their support side on the formwork and that the shape of the spacers is selected such that the upper longitudinal edge of the reinforcing bar is arranged at least at the same height as the upper side of the spacers above the formwork. 2. Reinforcement element according to claim 1, characterized in that the spacers are provided on their upper side with a longitudinal groove which at least partially accommodates the reinforcing bar. 3. Reinforcing element according to claim 1 or Z, characterized in that the spacers are made of concrete. 4. Reinforcement element according to one of claims 1 to 3, characterized in that the spacers are sections of a preferably extruded profile strand. 5. Reinforcement element according to claims 2 and 5, characterized in that the longitudinal groove on the spacers is created by the selected profile. 6. Reinforcement element according to one of claims 1 to 5, characterized in that the thickness of the spacers in the longitudinal direction of the reinforcing bar corresponds approximately to their height above the formwork. 7. Reinforcing element ■;uch one of claims 1 to 6, characterized in that the reinforcing bar is plastic-coated for protection against corrosion. 8. Reinforcement element according to one of claims 1 to 7, characterized in that at least three spacers (8) are attached to the reinforcing bar (7) and that the reinforcing bar is bent in such a way, preferably in a zigzag or wave shape, that the at least three spacers are not arranged in a straight line. 9. Reinforcement element according to claim 8, characterized in that the spacers taper towards the formwork and have only an approximately point-shaped or linear support surface thereon.