DE814218C - Spacer for reinforced concrete reinforcement - Google Patents

Description

When manufacturing reinforced concrete parts, there is a need to the reinforcement to be coated with concrete during the manufacturing process in the correct Keep a distance from the wall of the formwork or form to the prescribed Ensure that the reinforcement is covered with concrete.

To achieve this, pieces of concrete have been used, for example, the thickness of which corresponded to the desired distance, and between the reinforcement and the mold wall inserted. However, this procedure is impractical as a large part of the individual Lumps of concrete fell through the meshes of the framework and fell into the interior during concreting thus became ineffective.

Also the stretching of individual pieces of concrete on wire, which is spiral was wound around the entire reinforcement, did not provide a reliable solution. Apart from that from the fact that this process is quite cumbersome to carry out with large workpieces is, it happened again and again that a large part of the individual chain links did not rest on a longitudinal bar of the reinforcement, but in the gap when concreting slipped and thus remained ineffective.

Another method is to use metal pins, the length of which is required Distance corresponds to, welded onto the reinforcement in the radial direction. These Metal spacers have to meet special requirements: they are only allowed to be consist of a rustproof and corrosion-resistant metal and are therefore expensive. The welding or soldering of these spacer pins is cumbersome and time consuming.

The invention now solves the problem of securely acting spacing create by placing disc-shaped spacers on the rebar Training to be postponed or attached, all of the aforementioned Avoid disadvantages.

Fig. I shows the principle of spacing. On rebar i are raised at a corresponding distance between ring disks 2, the ring width of which is the prescribed Concrete cover corresponds.

It should be noted that these spacers are made of one material must exist that neither drifts nor oxidizes, and nothing else for concrete Has harmful properties. These spacers are therefore made of concrete, Fired or glazed steatite, porcelain or any other material that makes the corresponds to the above conditions.

The surface of these spacers can be rough, smooth or coarser or be more finely toothed. While in Fig. I the principle of spacing is shown the washers are simply pushed onto the reinforcing bars, Fig. 2 shows a special slotted shape of the spacers.

For certain workpieces it is possible to use the disk-shaped Slide on spacers while the reinforcement is being assembled; with others In some cases, however, this encounters difficulties. Here one uses the one shown in Fig.2 Shape. On the finished reinforcement are slotted at the appropriate places Put on washers 2 and fastened with binding wire 3 to the reinforcement 4 in such a way that that they can neither be twisted nor shifted. For attaching the wire serve the two lateral notches 5 or also according to FIGS. 3 and 4 a notch and one hole 6 or two holes 6.

Claims (4)

PATENT CLAIMS: i. Spacer for reinforced concrete reinforcement, consisting of a slotted or unslotted washer, which can be pushed or pushed onto the reinforcement bars. 2. Spacer according to claim i, characterized through notches or holes or notches and holes, through the fastening wires can be drawn. 3. Spacer according to claim i or 2, characterized by a material not harmful to the concrete, e.g. B. concrete, steatite, porcelain or equivalent Material. 4. Spacer according to one of claims i to 3, characterized in that that its surface is either rough, smooth or notched.