EP0796961B1 - Foam concrete elements with reinforcing system - Google Patents

Abstract

The top and bottom bars (3,6) run for the full length of the component. They are joined to each other by connecting bars (8) which run in a zigzag pattern, so as to form a lattice-work structure. The connecting bars are positively joined to the lengthwise ones at their ends. Several such structures can be parallel to each other and joined together via transverse bars. The structures can form groups passing through each other at right angles. The top and bottom bars in a structure, together with the connecting bars between them, can be in a common vertical plane.

Description

The invention relates to an aerated concrete component the one mentioned in the preamble of claim 1 Art.

It is known (see DIN standard 4223) especially aerated concrete slabs, to be provided with reinforcements, that increase resilience. In addition to the one in the bottom Third of the plate thickness of the main reinforcement to be positioned, which consists essentially of longitudinal bars which the in tensile stresses occurring in the installation position the plates because of the stress during transport Adequate upper reinforcement also in their pressure zone included, which are also primarily formed by longitudinal bars becomes.

To the tensile forces occurring on the individual rods Being able to transfer the aerated concrete is anchoring of the rods in the aerated concrete mass required. Different to for heavy concrete, it is not sufficient to do this To provide the surface of the bars with grooves or waves, which has a positive and non-positive connection with the Enable concrete. Rather need to start with aerated concrete cross bars are welded to the longitudinal bars, their number derive from the tensile force of each rod Main reinforcement, the diameter of the cross bars and the Compressive strength of the aerated concrete results. Doing so The distances and diameters of the crossbars are selected so that at least half of the tractive force to be anchored is transferred to the concrete on a route, that calculated from the end of the plate is at most equal to that four times the plate thickness.

This means that the distances between the cross bars in the longitudinal direction seen in the area of the serving Plate ends must be much smaller than for Slab out if the reinforcement is not oversized should be. An immediate consequence of this is that AAC components with an exactly dimensioned Reinforcement only in its original, in the manufacturing plant given length may be installed because a subsequent shortening on the site Statics would deteriorate in an impermissible manner.

To deal with this problem, you have aerated concrete components manufactured that along their entire length have a cross bar density, as they actually do is only required at the edition ends. this makes possible a subsequent shortening to any length, increased but the material and manufacturing costs are significant. Another problem with conventional reinforcement arrangements is that it is through the anchoring of the tension rods over the cross bars in the aerated concrete in the area of the slab heads there is often a split. One tries to counter this by providing additional, Upper and lower belt connecting Uses brackets to prevent cracking, so you get again an aerated concrete component with a predetermined Length that is not later by in the transverse direction running cuts may be shortened.

In contrast, the invention is based on the object a reinforcement arrangement of the type mentioned above to further develop that a subsequent shortening of the Components without deterioration in their statics without any problems is possible and thereby the manufacturing and Do not significantly increase material costs.

To achieve this object, the invention provides the Claim 1 summarized features.

Through these measures according to the invention, an aerated concrete component with a from synchronous or parallel truss girders with top and bottom Lower chord existing reinforcement arrangement created, which depending on the leadership as strut and post or Stand truss is formed. It is both for the filling or connecting rods as well as for the longitudinal rods the buckling length is the same because of the concrete embedding Zero. In principle, half-timbered structures of any kind are used, some in the subclaims particularly preferred variants are laid down.

In particular, it is also possible to use reinforcement to be designed as a space framework with load-bearing capacity in all directions.

Reinforcement arrangements are in the claims 1 to 11 described type as such, for example documents WO-A-95 17566, GB-A-2 234 277 and FR-A-1 221 815 known, but none of these publications recognize that the above-mentioned, aerated concrete specific problems can be solved by using such reinforcement structures.

Common to all variants according to the invention is that respective reinforcement arrangement continuously in the longitudinal direction is continuous, i.e. in the middle of the plate has no other arrangement or distribution of its elements than in the area of the circulation, without that a substantial oversizing or even an increase in price would be connected. A subsequent shortening of the one such reinforcement provided aerated concrete components deteriorated whose statics not only do not, but lead even an improvement. The on the plate heads, i.e. the front edges in the area of the support ends so far Common cracking is certain to occur regardless of whether the component with its original length is installed or subsequently has been shortened by a transverse cut is.

A particular advantage of the aerated concrete components according to the invention can be seen in that because of the power transmission Connection between upper and lower or outer and inner reinforcement with the same steel cross-sections much higher payloads added or the steel cross-sections to achieve the same load-bearing capacity to a third of what was previously required can be reduced.

The latter leads directly to the solution of another problem, so far the production of reinforced aerated concrete components considerably more difficult and more expensive. Out For reasons of cost, it was previously considered essential the reinforcement elements from normal, i.e. rust-prone Structural steel grades, which is different from heavy concrete additional rust protection measures required. For this purpose, the steel reinforcements were made before Incorporation into the aerated concrete mass in a with anti-corrosion agent filled bath dipped to them with a appropriate coating. Such a process is described for example in DE-PS 39 05 973. Apart from the space requirement, such a bathroom must both in terms of its temperature and its Composition carefully controlled. The at Immersing the actual reinforcement also with immersing Mounts need more after each use or be cleaned with less effort. The chemical Composition of many conventional anti-corrosion agents is related to the health hazard of the operating team and environmental protection at least questionable and / or flammable.

In principle, these reasons alone would suffice instead of conventional structural steel reinforcements made of stainless steel To use stainless steel because it makes the whole described above, in the manufacturing plant for the aerated concrete components rust protection measures to be carried out are not required can.

However, this leads to conventional reinforcement structures to a significant increase in material costs, which is due to the omission of the subsequent coating savings largely consumed or even causes an increase in the total manufacturing cost.

Because the reinforcement guides described the steel cross-sections with the same load capacity can be reduced by two thirds higher material costs of stainless steel compared to conventional structural steel but hardly any more.

A particular advantage of using stainless Steel is used in the shortening of aerated concrete components exposed cutting surfaces of the reinforcement elements not subsequently protected against rust have to be what was previously absolutely necessary and only was difficult to carry out.

Another advantage is that in the past in Building damage occurred on a large scale lack of corrosion protection in the aerated concrete components Reinforcement elements are attributable to sustainable be avoided.

Particularly noteworthy is the significantly improved Liability between the reinforcement elements and the AAC mass that is due to the direct contact between Reinforcement and aerated concrete is attributable to that so far due to the anti-corrosion coating that acts as a release agent was prevented.

A design also has a considerable advantage with itself, with the connection arrangement at its upper and lower vertices on the respective longitudinal bar whose inward circumferential half rests and there is non-positively connected.

On the one hand, this results in better coverage the reinforcement bars through the aerated concrete and the other a significant production advantage. Because runs at Cutting the not yet hardened aerated concrete block a cutting wire into individual reinforced aerated concrete components from the actually desired level he always on a smooth, continuous in the cutting direction Surface of a reinforcement bar, which it without risk of tearing leads. In the worst case, only two of them are off discard components to be cut in a block. Would on the other hand, the connecting rod arrangement to the side Longitudinal rods or even set so that they after this protrudes outside, so would a leaking cutting wire inevitably tear and the whole in the cutting process located aerated concrete block would have to be discarded. Moreover there would be a considerable downtime of the Cutting system and thus possibly the whole Production process.

Fig. 1

eine perspektivische Teilansicht eines als Sturz verwendbaren Porenbeton-Bauteils mit einer in Art eines Fachwerkträgers ausgebildeten Bewehrungseinheit,

Fig. 2

eine perspektivische Teilansicht eines ebenfalls als Sturz verwendbaren Porenbeton-Bauteils, das wegen seiner größeren Breite zwei zueinander parallele Bewehrungseinheiten aufweist, die den gleichen Aufbau wie die Bewehrungseinheit aus Fig. 1 besitzen,

Fig. 3

eine perspektivische Teilansicht eines als Wand-, Dach- oder Deckenplatte verwendbaren Porenbeton-Bauteils, bei dem vier der in Fig. 1 gezeigten Bewehrungseinheiten zueinander parallel angeordnet sind,

Fig. 4a bis 4c

Draufsicht, Seitenansicht und Stirnansicht eines dem Porenbeton-Bauteil aus Fig. 3 ähnlichen Porenbeton-Bauteils,

Fig. 5

eine perspektivische Teilansicht eines als Dach- oder Deckenplatte verwendbaren Porenbeton-Bauteils, bei dem drei zueinander parallele Bewehrungseinheiten vorgesehen sind, von denen jede zwei zueinander gegenläufige Verbindungsstäbe umfaßt,

Fig. 6a bis 6c

Draufsicht, Seitenansicht und Stirnansicht des Porenbeton-Bauteils aus Fig. 5,

Fig. 7

eine perspektivische Teilansicht eines als Dach- oder Deckenplatte verwendbaren Porenbeton-Bauteils, bei dem drei zueinander parallele Bewehrungseinheiten vorgesehen sind, von denen jede zwei miteinander gleichlaufende Verbindungsstäbe umfaßt,

Fig 8a bis 8c

Draufsicht, Seitenansicht und Stirnansicht des Porenbeton-Bauteils aus Fig. 7,

Fig. 9

eine perspektivische Teilansicht eines Porenbeton-Bauteils, bei dem zur Erzielung einer großen Spannweite in zwei zueinander senkrechten Richtungen in jeder dieser Richtungen mehrere zueinander parallele Bewehrungseinheiten vorgesehen sind, die sich gegenseitig durchdringen,

Fig. 10a bis 10 c

Draufsicht, Seitenansicht und Stirnansicht eines dem Porenbeton-Bauteil aus Fig. 9 ähnlichen Porenbeton-Bauteils und

Fig. 11a bis 11c

Draufsicht, Seitenansicht und Stirnansicht eines als Innenwandplatte verwendbaren Porenbeton-Bauteils.

The invention is described below using exemplary embodiments with reference to the drawing; in this show:

Fig. 1

2 shows a perspective partial view of a cellular concrete component which can be used as a lintel and has a reinforcement unit designed in the manner of a truss,

Fig. 2

2 shows a perspective partial view of a cellular concrete component that can also be used as a lintel and, because of its greater width, has two reinforcement units that are parallel to one another and have the same structure as the reinforcement unit from FIG. 1,

Fig. 3

2 shows a perspective partial view of a cellular concrete component that can be used as a wall, roof or ceiling panel, in which four of the reinforcement units shown in FIG. 1 are arranged parallel to one another,

4a to 4c

Top view, side view and end view of a cellular concrete component similar to the cellular concrete component from FIG. 3,

Fig. 5

3 shows a perspective partial view of a cellular concrete component that can be used as a roof or ceiling panel, in which three mutually parallel reinforcement units are provided, each of which comprises two connecting rods running in opposite directions,

6a to 6c

Top view, side view and end view of the cellular concrete component from FIG. 5,

Fig. 7

2 shows a perspective partial view of a cellular concrete component that can be used as a roof or ceiling panel, in which three mutually parallel reinforcement units are provided, each of which comprises two connecting rods running in the same direction,

8a to 8c

Top view, side view and end view of the aerated concrete component from FIG. 7,

Fig. 9

2 shows a perspective partial view of a cellular concrete component in which, in order to achieve a large span in two mutually perpendicular directions, several mutually parallel reinforcement units are provided in each of these directions, which penetrate one another,

10a to 10c

Top view, side view and end view of a cellular concrete component similar to the cellular concrete component from FIG. 9 and

11a to 11c

Top view, side view and end view of a cellular concrete component that can be used as an inner wall panel.

The reinforcement arrangement of the cellular concrete component shown in FIG. 1 1, which can be used as a lintel only one trained in the manner of a truss Reinforcement unit 3, which consists of an upper longitudinal bar 5, a lower longitudinal rod 6 and a zigzag shape extending back and forth between these two longitudinal bars 5, 6 Connecting rod 8 is in the area its upper and lower vertices 9, 9 'for example by welding with the relevant longitudinal rod 5 or 6 is connected.

As with conventional aerated concrete components, the serves upper longitudinal bar 9 in connection with the surrounding him AAC mass to absorb the pressure load while the lower longitudinal rod 6 can be subjected to tension can.

In contrast to what has been the norm up to now, it is anchored of the two longitudinal bars 5, 6 in the aerated concrete surrounding them not due to horizontal and in the installed position cross bars firmly welded to them, their mutual Distances in the longitudinal direction towards the respective ends become shorter, but due to the zigzag shape Connecting rod 8, which together with the two Longitudinal bars 5, 6 form a truss structure. In this way, with the same component thickness larger spans can be achieved. Alternatively it is possible to achieve an equal resilience use smaller steel cross sections. This allows instead of the previously common mild steel, which is replaced by additional Measures had to be protected against rust, rustproof To use steel grades without the Material costs increase in an unacceptable manner.

Due to the fact that the geometry of the invention Reinforcement arrangements to the ends of the respective component, these components can prefabricated from aerated concrete with very large lengths and on cut to shorter lengths at the construction site as required be, which is in contrast to the prior art their statics improved.

This applies both when using conventional as also of stainless steel grades. In the former case after cutting to length for adequate rust protection the reinforcement elements that appear on the cut surfaces be taken care of. In the second case, this can additional measures can be dispensed with.

The just explained with reference to the embodiment of FIG. 1 Advantages apply accordingly for the aerated concrete components shown in FIGS. 2 to 11, so that they will not be repeated can.

The aerated concrete component 10 that can be used as a lintel 2 has a larger width than component 1 from Fig. 1, so that its reinforcement arrangement two to each other comprises reinforcement units 3 arranged in parallel, each of which has the same structure as that Reinforcement unit 3 from FIG. 1.

As can be seen from FIG. 2, the two are Reinforcement units 3 through approximately perpendicular to the Longitudinal bars 5, 6 upper and lower transverse bars 12 connected to each other. Different from the state of the Technology does not get any static to these cross bars 12 Meaning too. They only serve the purpose of Production of the relevant aerated concrete component 10 to fix the two reinforcement units 3 relative to each other, if the reinforcement arrangement is suspended in a mold is and the filled aerated concrete mass due of the known driving process increases and thereby the reinforcement arrangement gradually completely encloses.

Thus, the cross bars 12 can be made from much cheaper Material exist as the actual reinforcement forming longitudinal and connecting rods. For example can use 12 plastic fiber rods as cross bars be, the strength of which is sufficient, the in the preparation and implementation of the casting process occurring loads that are much lower than the loads that are for anchoring the longitudinal bars in the cross bars installed condition of the aerated concrete component Need to become.

Fig. 3 shows a cellular concrete component 14, which by variation its outer shape with the same reinforcement arrangement to use as a wall plate, ceiling plate or Roof plate can be adjusted.

It is essential that due to the larger width here four Truss-like reinforcement units parallel to each other are arranged, each of the same structure has, like the reinforcement units shown in FIGS. 1 and 2. Cross bars 12 are again provided here, which serve the same purpose as this one With reference to Fig. 2 was explained and thus also can be made of a material that is far less resilient than the material of the longitudinal and Connecting rods.

4a to 4c show in plan view, side view and Front view of the aerated concrete component 14 from FIG. 3 corresponding aerated concrete component 14 'by the in the one side surface provided groove 15 and formed in the opposite side surface, matching spring 16 for use as a wall plate is trained. The side surfaces just mentioned but could with the same reinforcement arrangement also be designed as follows, for example for the aerated concrete component 18 in FIGS. 5 and 6 is reproduced, and thus for use as a roof or. Be adapted to the ceiling tile.

The reinforcement arrangement of the in FIGS. 5 and 6a to 6c AAC component shown consists of three to each other parallel truss-like reinforcement units 3 ', each of which has an upper longitudinal bar 5 'and two lower ones Includes longitudinal rods 6 ', 6', each of which by means of a Connecting rod 8 ', 8' connected to the upper longitudinal rod 5 ' is. The two connecting rods 8 ', 8' one each reinforcement unit 3 'runs like the connecting rods 8 in the previous embodiments zigzag shaped between the top and each associated lower longitudinal rod back and forth and are at their apices 9, 9 'with the respective longitudinal bar frictionally connected, for example by welding.

The two connecting rods 8 ', 8' of a reinforcement unit 3 'are offset from one another in the longitudinal direction arranged that in a parallel to the end face 20 Plane through the top vertex 9 of one of the runs two connecting rods 8, 8 ', a lower one Apex 9 'of the other connecting rod 8', 8 'lies, and vice versa.

The individual reinforcement units 3 'are also through here Cross bars 12 connected to each other, but in terms the statics of the built-in aerated concrete component 18 without Function can remain.

In particular the top view of FIG. 6a of the one shown in FIGS. 5 and 6a to 6c shown aerated concrete component 18 the opposite arrangement of the connecting rods 8 ', 8' clearly visible from each reinforcement unit 3 ', this arrangement is expressed in FIG. 6a by that seen in the direction of the cross bars 12 each upper Vertex 9 of a connecting rod 8 'a lower one Vertex 9 'of the other connecting rod 8' is opposite and vice versa.

Here, too, there is a groove 15 in one end face a spring 16 is formed in the opposite end face, the latter in one covering the entire Length of the aerated concrete component 18 extending fold 21 passes.

7 and 8a to 8c show a cellular concrete component 24, the reinforcement arrangement again three to each other parallel reinforcement units designed in the form of trusses 3 '' includes. Each of these reinforcement units 3 '' consists of an upper longitudinal bar 5 '' and two lower Longitudinal bars 6 '', 6 '', with the upper longitudinal bar 5 '' over two zigzag-shaped connecting rods running back and forth 8 '', 8 '' are connected. Here are the Connecting rods 8 '', 8 '' arranged so that their upper Vertex 9, where they are connected to the upper longitudinal bar 5 '' are firmly connected, collapse and their lower Vertex 9 'on which they are connected to the lower longitudinal bars 6 '', 6 '' are firmly connected, in the same, for End face 25 parallel plane. As with all previous embodiments, the several framework reinforcement units 3 and 3 ', the reinforcement units are 3 '', 3 '', 3 '' in aligned with each other in such a way that the upper apex 9 and the lower vertices 9 'each in one the plane parallel to the faces, the reinforcement units are thus arranged in synchronism with each other. However, this is not absolutely necessary. Rather you can the individual reinforcement units 3, 3 ', 3' 'in the longitudinal direction be staggered at will. Their distances across the longitudinal direction are shown in the Embodiments are the same, but can each then selected different sizes, if necessary if more than three reinforcement units 3, 3 ', 3' 'the reinforcement arrangement of a cellular concrete component form.

While all the embodiments shown so far are one Longitudinal direction in which they are due to their reinforcement arrangement can span a wide span, and a transverse direction perpendicular thereto, in which only one comparatively small width is possible, the in 9 and 10a to 10c suitable embodiment shown as a framework in two perpendicular to each other Directions to span large spans.

For this purpose, the reinforcement arrangement of there AAC component 28 shown in each of these two Directions a variety of truss-like trained Reinforcement units 3 on in the same way are constructed as shown with reference to FIG. 1 to 4a. That means each of these Reinforcement units, of which in Fig. 9 in the previous "Longitudinal direction" five and in the previous "transverse direction" three are shown, each an upper longitudinal bar 5 and a lower longitudinal rod 6, which by a zigzag-shaped running between them Connecting rod 8 connected to each other like a truss are. The expression "longitudinal bar" is to be understood as that the rod in question in the longitudinal direction of the concerned Reinforcement unit 3 extends.

In other words, the reinforcement arrangement comprises two Groups of reinforcement units 3, each facing each other run vertically and penetrate each other. The connecting rods 12 can be omitted here because the top and lower longitudinal bars 5 and 6 at their crossover points can be firmly connected and thus the reinforcement arrangement shown here already before embedding it in the aerated concrete mass in that sense is stable that their reinforcement units 3 are not can move against each other.

In the top view of FIG. 10a, only the upper "longitudinal bars" are 5 visible because the associated connecting rods 8 and lower "longitudinal bars" 6 congruent under them lie.

11a to 11c show an as an inner wall plate element suitable aerated concrete component 30, the reinforcement arrangement only one, in the manner of a truss trained reinforcement unit 3 '' ', in the similar as with the reinforcement units 3, an upper longitudinal bar 5 with a lower longitudinal bar 6 by a zigzag shape connecting rod running back and forth between them 8 is connected to its upper and lower Parting 9 or 9 'non-positively, in particular by Welding connected to the associated longitudinal rod 5 or 6 is.

A difference of this reinforcement unit 3 '' 'to all reinforcement units shown above consists of that the connecting rod 8 is not around at its apices 90 ° but a kinked angle. Moreover runs approximately in the middle in height upper and lower longitudinal bars 5 and 6 a middle longitudinal bar 7th

In all the exemplary embodiments explained so far upper and lower longitudinal bars each with a continuous, at the upper and lower vertices 9 and 9 ' bent connecting rod 8 or 8 'or 8' 'with each other connected. Instead of a single connecting rod can also be a variety of short single bars be used according to the straight sections of the connecting rods 8, 8 ', 8' 'shown the vertices 9, 9 'but end and there with the respective Longitudinal bar are non-positively connected.

Claims (15)

1. A cellular concrete component (10; 14; 18; 24; 28; 30) with a reinforcing arrangement which has at least one longitudinal bar (5; 5', 5'; 5", 5") which is an upper bar in the installation position and at least one longitudinal bar (6; 6', 6'; 6", 6") which is a lower bar in the installation position, wherein said longitudinal bars extend substantially over the entire length of the cellular concrete component (10; 14; 18; 24; 28; 30), characterised in that the reinforcing arrangement includes at least one reinforcing unit (3; 3'; 3"; 3"') which is formed in the manner of a lattice girder and whose upper (5; 5', 5'; 5", 5") and lower (6; 6', 6'; 6", 6") longitudinal bars are connected together by at least one connecting arrangement (8; 8', 8'; 8", 8") which extends substantially over the entire length of the cellular concrete component (10; 14; 18; 24; 28; 30) to and fro in a zig-zag configuration between an upper and a lower longitudinal bar and in the region of its upper and lower apex points (9, 9') is force-lockingly connected to the respective longitudinal bar.
2. A cellular concrete component according to claim 1 characterised in that its reinforcing arrangement includes a plurality of mutually parallel, lattice girder-like reinforcing units (3; 3'; 3") which are arranged at a spacing from each other transversely with respect to the longitudinal direction.
3. A cellular concrete component according to claim 2 characterised in that the plurality of lattice girder-like reinforcing units (3; 3'; 3") are fixedly connected together by connecting elements (12) extending transversely with respect to the longitudinal direction.
4. A cellular concrete component according to claim 2 characterised in that the reinforcing arrangement includes two groups of lattice girder-like reinforcing units (3), wherein the reinforcing units which respectively belong to the same group are arranged in mutually spaced and mutually parallel relationship and pass through the reinforcing units of the other group approximately at a right angle.
5. A cellular concrete component according to one of claims 1 to 4 characterised in that its lattice girder-like reinforcing unit (3; 3"') includes an upper (5) and a lower (6) longitudinal bar, wherein the longitudinal bars (5, 6) in the installation position of the cellular concrete component (1; 10; 14; 28; 30) are in the same vertical plane in which the connecting bar arrangement (8) also extends.
6. A cellular concrete component according to one of claims 1 to 4 characterised in that its lattice girder-like reinforcing unit (3'; 3") includes an upper (5'; 5") and two lower (6', 6'; 6", 6") longitudinal bars which are arranged relative to each other in such a way that in the installation position of the cellular concrete component (18; 24) the vertical plane extending through the upper longitudinal bar (5'; 5") is in the centre between the two vertical planes respectively extending through one of the two lower longitudinal bars (6', 6'; 6", 6") and the upper longitudinal bar (5'; 5") is connected to each of the lower longitudinal bars (6', 6; 6", 6") by its own connecting bar arrangement (8', 8'; 8", 8").
7. A cellular concrete component according to claim 6 characterised in that the two connecting bar arrangements (8", 8") of a lattice girder-like reinforcing unit (3") are arranged in identically directed relationship in such a way that their upper apexes (9) are connected to the upper longitudinal bar (5") in immediate proximity with each other.
8. A cellular concrete component according to claim 6 characterised in that the two connecting bar arrangements (8", 8") of a lattice girder-like reinforcing unit (3") are arranged in oppositely directed relationship in such a way that the upper apexes (9) of the one connecting bar arrangement (8') are connected to the upper longitudinal bar (5') in the centre between the locations at which the upper apexes (9) of the other connecting bar arrangement (8') are connected to said upper longitudinal bar (5').
9. A cellular concrete component according to one of claims 1 to 8 characterised in that the connecting bar arrangement (8; 8'; 8") comprises a single connecting bar which is bent multiply in a zig-zag shape.
10. A cellular concrete component according to one of the preceding claims characterised in that successive portions of the zig-zag-shaped connecting bar arrangement (8; 8'; 8") respectively include with each other approximately a right angle.
11. A cellular concrete component according to one of the preceding claims characterised in that the reinforcing bars (5, 6, 8; 5', 6', 8'; 5", 6", 8") comprise steel and are connected together by welding.
12. A cellular concrete component according to one of the preceding claims characterised in that the reinforcing bars (5, 6, 8; 5', 6', 8'; 5", 6", 8") comprise corrosion-resistant material.
13. A cellular concrete component according to claim 11 or claim 12 characterised in that the reinforcing bars (5, 6, 8; 5', 6', 8'; 5", 6", 8") comprise high-quality steel.
14. A cellular concrete component according to one of claims 3 to 13 characterised in that the transverse connecting elements (12) are bars of a material which has a lower load-bearing capability than the reinforcing bars (5, 6, 8; 5', 6', 8'; 5", 6", 8").
15. A cellular concrete component according to one of the preceding claims characterised in that the connecting bar arrangement (8; 8', 8'; 8", 8") bears at its upper and lower apex points against the respective longitudinal bar at the inwardly directed peripheral half thereof and is force-lockingly fixed there.

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