DE19642780A1 - Wall component - Google Patents

Description

The invention relates to a wall component, the two are spaced apart has arranged concrete slabs, which are cast together by lattice girders are connected.

Such wall components are known with a hollow space that is under construction is filled with in-situ concrete. The, about 5 cm thick, concrete slabs are with a Reinforcement mesh provide and go with the lattice girder in the statics of Wall.

The wall building panels are manufactured in concrete plants, transported to the building and mounted there. On the outside they are covered with an insulating plaster coated.

This design requires a compromise between different concerns. One On the one hand, striving for thin wall components and in terms of transport volume with regard to the use of space, thin walls on and otherwise, always, as little work as possible. On the other hand, noise protection and warmth are required Insulation a certain wall thickness including application of the heat mentioned insulating plaster.

The invention has for its object to find an overall cheaper solution.

According to the invention, this purpose is achieved by a wall component at the beginning mentioned type, in which a concrete slab with a thickness of 6 to 12 cm  and with the lattice girder as a static reinforcement as the sole load-bearing wall part is provided and the other, from a high-strength concrete mixture and / or with one Steel fiber reinforcement made concrete slab with a thickness of less than 4 cm hollow space limitation and tight cover for an insulation provided in the cavity layer of fabric.

With the limitation of the static load capacity made here - the thickness the former concrete slab is preferably less than 10 cm - approximately to that required space, at least not much more, will be freed up space for the layer of insulation that provides the required thermal insulation. The, preferably reduced to 2.5 to 3.5 cm, the thickness of the other concrete slab mentioned, which with the Material selection of high-strength concrete and / or steel fiber reinforcement is made possible, further reduces the wall thickness. Finally, due to the insulation material layer of high thermal insulation dispenses with an insulating plaster and this is done by one already during the manufacture of the wall component provided surface to be replaced.

This results in the sum of space consumption, heat loss and workload achieved a saving. With the same insulation, the wall can be thinner, at same thickness of thermal insulation, the labor of plastering can be saved will.

The finishing of the surface in the concrete plant is expedient with the concrete manufacture in itself or otherwise closely related to it. Especially considering com In this regard, colored concrete and / or one produced by the casting mold Relief and / or sandblasting.

There are many possible uses for the insulation layer. The insulation layer can be incorporated in the concrete plant, for example in the form of polyurethane foam or mineral fiber wool. It can be installed on site, what kind of fillings the more expedient is, for example, from expanded clay or cellulose snippets.

However, is particularly useful for the wall component according to the invention proposed on-site foam concrete or plastic foam, the connects the wall components in the building.  

As a rule, the non-load-bearing, thin concrete slab will be the outer shell. You bil det a mechanical protection and weather protection from the less firm and Exposing the weather to an unsuitable insulation layer.

In addition to the optionally and preferably existing steel fiber reinforcement thin concrete slab did not receive any stronger reinforcement, at most about a screed git ter.

The thicker concrete slab will be provided with normal reinforcement and in Produce particularly high quality concrete, such as B 25, B 35 or more.

The drawing shows an embodiment of the invention.

Two concrete slabs 1 and 2 are connected to one another by lattice girders 3 .

The concrete slab 1 has a thickness of about 7 cm and is provided with normal reinforcement. It consists e.g. B. from a concrete B 35.

The concrete slab 2 is only 3 cm thick and only provided with steel fiber reinforcement. The concrete can then be the same as that of the concrete slab 1 .

In an alternative, the concrete slab 2 consists of high-strength concrete, possibly without reinforcement.

The production of high-strength concrete mixes is known per se. In particular it says here, by adding silica dust and reducing the water / cement Factor to less than 0.4 to lower the porosity of the concrete. Preferably used a silica condensed from the vapor phase in the production of ferrosilicon dust.

The cavity 4 between the concrete slabs 1 and 2 is filled, for example, with foam concrete after the day.

Claims (7)

1. Wall component, which has two spaced-apart concrete slabs ( 1 , 2 ), which are connected to one another by cast lattice girders ( 3 ), characterized in that a concrete slab ( 1 ) with a thickness of 6 to 12 cm and with the lattice girder ( 3 ) as buckling reinforcement statically provided as the sole load-bearing wall part and the other, made of a high-strength concrete mixture and / or with a steel fiber reinforcement, concrete slab ( 2 ) with a thickness of less than 4 cm cavity limitation and tight cover for one in the cavity ( 4 ) is provided insulation layer. 2. Wall component, characterized in that the latter concrete slab ( 2 ) is the outer shell. 3. Wall component according to claim 1 or 2, characterized in that the latter concrete slab ( 2 ) has a thickness of 2.5 to 3.5 cm. 4. Wall component according to one of claims 1 to 3, characterized, that the former concrete slab has a thickness of less than 10 cm. 5. Wall component according to one of claims 1 to 4, characterized in that the former ( 1 ) and / or the latter ( 2 ) concrete slab has or have a finished surface. 6. Wall component according to claim 5, characterized, that the surface by a colored concrete and / or one of the mold generated relief and / or sandblasting is completed.   7. Wall component according to one of claims 1 to 6, characterized, that as a layer of insulation brought in by the customer, the wall components ver binding foam concrete or plastic foam is provided.