LU85993A1 - FORMWORK STONE - Google Patents

Description

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Claiming the priority of Bir * 3762 / aH / EG

Patent applications filed in the B.R.D »office 1) August 3, 1984 under No. P 34 28 660.8 2) September 7, 1984 under No. P 34 32 925.0 i / Applicant» I Siegfried Gebhart TobeIstedel D - 7971 Aichstetten-Mtrach i

Patent application

Formwork

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The invention relates to a formwork block with an outer wall, an inner wall, with an intermediate cavity for concrete filling, with two end walls, which are provided with recesses, and with an insulation insert.

To save costs, shuttering blocks are increasingly used in house construction, especially for the basement. However, it is r ~ .................— t * V - * * w V ..

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to create stones. Formwork blocks have the advantage that they can also be used by non-construction specialists. In general, only the first layer of stone is placed in mortar and the rest of the wall is pulled up dry, like a construction kit. For this purpose, such formwork blocks are generally relatively precise, for which purpose they are milled and provided with tongue and groove. After the formwork blocks have been laid on top of each other one floor high, their cavities are filled with concrete. This results in a very stable wall with simple construction.

Such formwork blocks, however, have very little thermal insulation. For this reason, formwork blocks are already known which are provided with insulation inserts. For this purpose, the walls of the cavity of the formwork block are completely covered with the insulation insert. This results in relatively good thermal insulation, ......

but disadvantageous is that almost no heat storage can take place in the wall. The filled concrete would be a very good heat storage in the sense of a tiled stove effect, but since it is also surrounded on the inside by polystyrene, it cannot be used for this purpose. Another disadvantage is that only a very bad i. moisture condensation or moisture removal through the stone can take place. As a result, the so-called building moisture I is in a [finished house] for a very long time. »··» - ». ····.'., H ,. · * * 'Τ s?% · -.- * »__"' r-TJTr: ··

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te before and there is even a risk that at the. Wall-mounted panels can fall off. The concrete filled into the cavity, which is surrounded on all sides by the insulation insert, is naturally very moist and this moisture can only escape to the outside very slowly. But the indoor climate with such a stone also suffers later, because the vapor pressure that is always present in the room can only be dissipated with difficulty through such a wall.

The present invention is therefore based on the object of providing a formwork block of the type mentioned at the outset which, with simple handling, has good heat and sound insulation properties without moisture problems. ÿ t Λ • ·% · - ·

According to the invention, this object is achieved in that the insulation insert extends over the inside of the outer wall, the inside of the end walls and along the recess over the latter.

According to the invention, the insulation inserts are now arranged in such a way that good heat and sound insulation is now provided, but additional moisture transport through the formwork block is also provided. For example, between the inner wall à ““ ““ "" a “-a“ a "

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Concrete is poured in, no insulation insert. This means that the tiled stove effect is effective, because the heat of the interior can be stored in the concrete. At the same time, however, the insulating insert attached to the two end walls and the inside of the outer wall ensures that the heat cannot be transported outside. The formwork blocks in a row are in line with each other through the recesses due to the concrete filling. Connection, whereby a very stable bond is achieved. Moisture can be drained off through the shuttering stone via the part of the end walls that is not interrupted by the recess.

In a further embodiment it can be provided that the recess has a tunnel shape, the front edges of which are encompassed by the insulation insert. Through this design. λτ * '; In conjunction with the cladding of the front edges with the insulation insert, the insulation effect is even better • - * £ ** · ·.

It can further be provided that the thickness of the insulation insert tapers on the inner sides of the end walls in the direction of the inner wall.

This configuration is practically without reducing the

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for the concrete backfilling and thus for a higher static, resilience of a masonry made with it.

A very advantageous further development is that the two end walls are additionally provided with a transverse slot running parallel to the outside of the end walls.

The end wall parts provided for moisture transport are improved in their thermal insulation by this measure. In addition, the transverse slots ensure that the concrete is not so densely compacted in the stone, which also leads to an improvement in the insulation properties.

In general, you will choose the width of the slot and its length as large as reasonable. The prerequisite is that there is still sufficient stability of the end wall.

Another very advantageous embodiment of the invention is that the two end faces each have an insulation groove running parallel to the end face on their upper sides facing away from the cutouts, in which there is an extension of the insulation insert.

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In this way it is achieved that when the formwork blocks are laid in mortar, the latter does not come into direct contact with the concrete or the end wall of the formwork block. In this way, direct contact is avoided by the insulation insert lying in the insulation groove. This measure further improves the thermal insulation of the formwork block.

If the formwork block is made of expanded clay and, if necessary, the concrete filling to be installed is also lightweight concrete, the insulation properties are also further improved. -I

The insulation insert can be formed in one piece, which is inserted accordingly after the formwork block has been produced. For easier assembly, in particular if the front edges of the recess and the insulation groove are provided with JV of an insulation insert, the insulation insert will generally be formed in two parts, with the parting joint in the form of a step heel to avoid an interruption in insulation lying approximately in the length of the column.

Another very advantageous embodiment of the formwork block according to the invention is that the outer wall and possibly also the inner wall is provided with at least one stiffening rib on the inside. The i.

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Stiffening rib should be continuous in the vertical direction and located in the area of the central stone plane.

Of course, however, several stiffening ribs lying next to one another are also possible within the scope of the invention. This depends on the length and type of stone. The same applies to the direction of the stiffening rib.

By means of such stiffening ribs, the formwork block is considerably more stable with respect to pressures and bends. This applies e.g. when prefabricating the wall, the interior of the formwork brick is still open. The risk of breakage is reduced by the stiffening ribs. However, the stiffening ribs are also advantageous when pouring the concrete into the free interior of the formwork block. Correspondingly high pressures occur, in which case the stiffening ribs have a stabilizing effect.

But even after the building has been constructed, the stiffening ribs on the outer walls are an advantage. Is such a wall in fact exposed to high levels of sunlight, e.g. in the case of a south-facing wall, the outer wall J can be relatively i - "Ä; 1 Τ 'due to the insulation insert behind it.

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heat up. The stiffening ribs significantly reduce the risk of plaster cracks occurring.

An exemplary embodiment of the invention is described in principle with reference to the drawing.

Show it:

1: a top view of the formwork block according to the invention, the right half representing a horizontal section according to I-I of FIG. 2;

2: an end view of the formwork block; , ..vT * - Jy ··

3 is a perspective view of the formwork stone;

Fig. Hi several laid formwork blocks.

5: a plan view of a formwork block with stiffening ribs.

The formwork block has an outer wall 1, an inner wall 2 and end walls 3 and ¾. These walls thus enclose a cavity 5 into which, after the formwork has been installed,

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stones are poured in from above. The cavities 5 of formwork blocks lying adjacent to one another are connected to one another via recesses 6 in the shape of a tunnel in the end walls 3 and ¾.

Grooves 7 and tongues 8 are arranged diagonally to one another in the end walls 3 and ¾, by means of which the formwork blocks can be placed exactly next to one another without gaps. In the two end walls 3 and ¾ transverse slots 9 are also arranged, which can be continuous in the vertical direction. Of course, they can also be closed on an outside of the formwork block. So that the greatest possible length of the transverse slots 9 is achieved, these are arranged offset from one another with respect to the longitudinal axis of the stone. This is necessary due to the location of the grooves 7 and 8 springs.

An insulation insert 10 is divided into two, the parting joint being in the form of a step shoulder 11 approximately in the middle of the longitudinal stone.

As can be seen in particular from FIG. 1, the insulation insert 10 is located on the inside 12 of the outer wall 1 and on the inside of the two end walls 3 and 4. At the same time, the insulation insert projects in this Λ section with an extension 13 approximately semicircular i

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into the recess 6 and covers its front edge l1! from. In Fig. 2 the stone is shown so that the recess 6 is an opening in the shape of a tunnel. Of course, however, the formwork block can also be laid in reverse, i.e. the two recesses are each located in the upper region of the end walls 3 and 11.

In both end walls 3 and 4, an insulation groove l6 running parallel to the end faces is arranged on their top and bottom sides facing away from the cutouts, in which an extension 17 projecting from the insulation insert 10 in the area of the two end faces also projects.

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To insert the two-part insulation insert 10, it is inserted from the side of the stone on which the recesses 6 are open, from below or above, with their lateral extensions 13 and 17 being placed or inserted over the end edges 14 or into the insulation groove 16 will.

As can be seen from FIG. 1, the thickness of the insulation insert in the area of the two end walls 3 and 4 decreases in the direction of the inner wall 2.

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In the Pig. 4 several laid formwork blocks are shown on a reduced scale. It also shows the shape of a corner stone 18 that closes one end wall, i.e. without a recess 6, while the inner wall 2 is provided with the recess 6 in the outer region. In addition, an insulation insert is provided on the outwardly projecting end face.

If you do not want to use a separate corner stone 18, you can

i A normal formwork block can also be used as a corner block. For this it is only necessary that the outwardly projecting end face with the recess 6 is correspondingly covered by a separate insulation plate (shown in dashed lines) and a recess 6 is made in the inner wall 2 either at the factory or subsequently on the construction site.

Fig. 5 shows a plan view of a formwork block with stiffening ribs. As can be seen, a continuous stiffening rib 19 is arranged on the inside of the outer wall 1 and the inner wall 2 in the region of the central stone plane. The insulation insert 10, which also bears on the inside of the outer wall 1; is designed so that it follows the shape of the stiffening rib so that a constant I thickness of the insulation insert is always guaranteed.

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The shape of the stiffening rib can be of any type, in general the stiffening rib will be designed in such a way that its side connecting walls are inclined to the outer and inner walls.

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Claims (14)

1. Formwork block with an outer wall, an inner wall, with an intermediate cavity for backfilling concrete, with two end walls, which are provided with recesses, and with an insulation insert, characterized in that the insulation insert (10) on the inside (12) of the outer wall (1), the inner rare of the end walls (3,4) and / along the recesses (6) extends over them. X file: G 12¾¾ I 2. Formwork block according to claim 1, characterized in that the recess (6) has a tunnel shape, the end edges (1¾) of an extension (13) of the insulation insert (10) are included. 3. Formwork block according to claim 1 or 2, characterized in that the thickness of the insulating insert (10) on the inside of the end walls (3, ¾) tapers in the direction of the inner wall (2). k) formwork block according to claims 1-3, characterized in that the two end walls (3 ^ ¾) are each provided with a transverse slot (9) extending parallel to the outer end wall sides. 5. formwork block according to claim 4, characterized in that the width of the transverse slot (9) between a third and 'an eighth, preferably a sixth, the thickness of a | Front wall (3, ¾). Λ ^ 1¾ file: G 12M I «b 6. formwork block according to claim 5 or 6, characterized in that the two end walls (3, * 0 are each provided with diagonally opposite grooves (7) and springs (8) and that the two transverse slots (9) are arranged offset transversely to the longitudinal axis of the stone are such that they are extended in the area of the springs (8) towards the outer or inner wall. 7. Formwork block according to one of claims 1-6, characterized in that the two end walls (3 ** 0 each have an insulating groove (16) running parallel to the end face on their upper or lower sides facing away from the recesses (6), in which is an extension (17) of the insulation insert (10). 8. Formwork block according to claim 7, characterized in that the insulation groove (16) with the insulation insert extends over a substantial part of the width and at least approximately over the width of the recess (6) of the stone. 9. Formwork block according to one of claims 1-8, characterized in that I it consists of expanded clay. A file: G 1244 I * «* m Λ 10. Formwork block according to one of claims 1-9, characterized in that the concrete filling to be introduced is lightweight concrete. 11. Formwork block according to one of claims 1-10, characterized in that the insulation insert (10) is in one piece. 12. Formwork block according to one of claims 1-10, characterized in that the insulation insert (10) is divided into two, the parting joint being in the form of a step heel (11) approximately in the middle of the stone length. 13. Formwork block according to one of claims 1-12, characterized in that the outer wall (1) and / or the inner wall (2) is provided with at least one stiffening rib (19) on the inside. 14. Formwork block according to claim 13, characterized in that the stiffening rib (19) is formed continuously in the vertical direction I. i * 4 * - ï t file: G 1244 I 15. formwork block according to claim 13 or 14, characterized in that the stiffening rib (19) lies in the region of the central stone plane. - ^