EP0891446A1

EP0891446A1 - Auxiliary device for laying of concrete blocks, in particular

Info

Publication number: EP0891446A1
Application number: EP97920632A
Authority: EP
Inventors: Karl Kortmann
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-11
Filing date: 1997-04-09
Publication date: 1999-01-20
Anticipated expiration: 2017-04-09
Also published as: AU2694797A; ATE254216T1; WO1997038167A1; EP0891446B1

Abstract

The invention relates to an auxiliary device for laying of concrete blocks, in particular, which is provided with a moulded strip (1; 1') which can be placed between a paving surface edge (2) and an adjacent effective area (3) and after removal leaves a separating line. The moulded strip (1; 1'; 101; 101'; 201) has in the region of its first longitudinal side surface (4; 4') directed towards the concrete blocks (2; 2'; 2"), and/or on the second longitudinal side surface (5; 5') facing the effective surface (3) a contact section (6; 7) providing the fitting position.

Description

Auxiliary device for laying in particular

Concrete blocks

The invention relates to an auxiliary device, in particular for laying concrete blocks, according to the preamble of claim 1.

In a known device of this type (DE-PS 632 734), for the production of room joints in in particular concrete street ceilings, a shaped strip designed in cross-section as a trapezoidal hollow part is provided, the side surface areas of which are provided with a bitumen layer before being positioned in the use position become. After the areas of the concrete road surface cast on both sides have hardened, the molding in the interior is heated and can then be removed from the installed position. Such a molding is associated with a disadvantageously high processing effort, requires cleaning of the joint area after use and is not very flexible to use under different conditions of use.

The invention has for its object to provide an auxiliary device for the laying of concrete blocks, in particular, which with reduced effort and simple

CONFIRMATION COPY Easy handling enables the formation of different cross-sectional shapes of the parting line with high dimensional accuracy and without reworking.

The invention solves this problem with an auxiliary device with the features of claim 1. With regard to further essential configurations, reference is made to claims 2 to 16.

The auxiliary device according to the invention is provided with a molding, which is designed for the precise and precise formation of spatial gaps with respective function-integrated surface contours on the side surfaces. The molding is formed on the one hand towards the concrete blocks with a holding area and / or a system profiling and on the other hand towards the usable surface, which is formed in particular from cast concrete, with a molded projection, so that with these cross-sectional profiles both the precise positioning of the molding in the installation position, in particular at the edge of a Paving is also possible, and with different joint connection areas to the adjacent usable installation conditions, a quick and flexible profile adjustment is achieved in the area of the molded projection.

In an expedient embodiment, the molding is made of plastic material, on which an adhesive surface area provided with an adhesive is defined in the area of the longitudinal side surface facing the concrete block, so that precise positioning and positionally stable fixing of the molding in the installed position is possible until the adjacent usable area has hardened. After that the Molded bar is grasped in its entirety on a handle attachment and removed from the installed position. The remaining joint has an edge profile corresponding to the molded projection, the height of which in relation to the surface of the concrete block can be determined by the molding or the position of the integrated molded projection.

In an advantageous embodiment, the shaped concrete block can be connected directly to the one-piece molding, which is in each case defined as a releasable component on one or more of the side surface areas by means of an adhesive connection or the like, that this molding is jointly with the Concrete block must be handled and placed in the installation position. Thereafter, in particular, a cast concrete can be worked on the molding so that the joint and a driving surface are formed on the outside in front of the concrete molding, the front edge-edge profile of which is formed directly by a smooth outer contact surface and the molded projection of the molding. The hardening of the fresh concrete takes place at this contact surface of the cast concrete and the molding and after that the molding can be removed from the smooth contact surface with little effort and without additional aids.

In an expedient embodiment, the shaped strip consists of a plurality of plastic parts connected by means of adhesive connections which impart different adhesive forces, the outer part, with its contact surface facing the cast concrete, being designed in particular as a dimensionally stable PVC strip. At least this part of the molding can after the above-described positioning of the stone in the installed position and the hardening of the cast concrete, be pulled off in such a way that a precisely and evenly spaced joint is formed between the concrete block and the cast-on driving surface.

With this auxiliary device, which is designed as a multi-part or one-piece molding, an exact parting line can be created with little effort in terms of shape and position, so that even when laying the concrete blocks by little-trained personnel, laying errors at the edge area towards a driving surface are largely excluded and also with faster Laying a sufficient assembly quality is achieved. After the subsequent filling of the parting line, for example with an elastic plastic material as a sealant, reliable tightness is achieved in this highly stressed driving area on an overall liquid-tight paving.

Further details and advantages of the invention result from the following description and the drawing, which illustrate two exemplary embodiments of the molding according to the invention. The drawing shows:

1 is an enlarged detail view of the molding in the multi-part design in the installed position between a concrete block and a driving surface,

2 shows a partially sectioned perspective view of the molding in a second embodiment in the installed position, Fig. 3 and

4 respective side views of the molding bar similar to FIG. 2 with different profiles on the side surfaces of the molding bar,

5 to

7 respective embodiments of the molding with a support profile on the longitudinal side surfaces, and

8 shows a basic illustration similar to FIG. 1 with the molding according to FIG. 5 or FIG. 6 in the installed position.

In FIG. 1, a molding strip, designated overall by 1 and effective as a laying auxiliary device, is shown in the installed position, whereby on the one hand a molded concrete block 2 and on the other hand a usable area 3 formed from cast concrete adjoin. The molding 1 is connected to the concrete molding 2 in the area of its first longitudinal side face 4 facing the concrete molding 2 in a connecting plane E and, on the other hand, the molding 1 has a molding projection 6 which merges into the useful surface 3 in the area of its second longitudinal side 5 on. In the embodiment according to FIGS. 2 to 4, the molding 1 'is provided in the region of its first longitudinal side surface 4 with a support shoulder 7 which at least partially overlaps the concrete block 2. For rapid laying of the concrete blocks 2, in an advantageous embodiment, these can be connected directly to the molding 1 (FIG. 1), which has a largely arbitrary component length, so that the two components can be positioned together in the laying position. The molding 1 is particularly glued to the outer side surface 8 of the concrete block 2. It is also conceivable for such a molding 1 to be molded into the cast concrete at least in some areas during the shaping of the concrete block 2, so that a particularly stable connection of the laying unit to be transported to the installation site as composite components is achieved.

The molding 1 (FIG. 1) forms an auxiliary device which has an essentially rectangular cross-sectional contour, the outer side surface 5 of the molding 1 in a practical embodiment in the area towards the upper cover surface 11 having an acute-angled triangular shape having molded projection 6 is provided. In this first embodiment, the molding 1 is designed as a multi-part component which has a foam filler part 14 and an outer molding part 15 next to one another on a lower foam base part 13 in the installed position. These individual layer parts 13, 14 and 15 are connected via a respective adhesive connection A, B, C. It is of functional importance that the outer molded part 15 is fixed both in the area of its connection A to the base part 13 and the connection B to the filler part 14 with a connection stability that can be released under the effect of a defined tensile force. In the installed position according to FIG. 1, this molding 1 is cast around, for example, the in-situ concrete forming the driving surface 3, the outer molded part 15 with the molded projection 6 causing the cast concrete to be profiled and this has increased break resistance in the area of the joint edge. After the cast concrete has hardened, the outer molded part 15 can be pulled out of this connection position under the action of tensile forces (arrow F), the comparatively low connection stability in areas A and B being overcome.

The filling part 14 is made in an expedient embodiment from an elastic material with a comparatively small thickness D and can be removed from the laying position at the same time as the outer molded part 15, the connection B remaining and the connection E to the stone 2 and the connection C to the Base part 13 are solved. Thereafter, a parting line corresponding to the cross section of the outer molded part 15 is created, which is extremely precisely contoured and can be filled with little effort using a filling material provided, for example, as a sealant.

In the area of the base part 13, the molding 1 is provided in the connection plane E with a film part 16, which is fixed, for example, to the base part 13 via an adhesive connection 17. In the laying position shown, this film part 16 creates a predetermined breaking notch in the manner of a leading slot after the cast concrete of the driving surface 3 has hardened, above the material stresses of the adjacent concrete parts while avoiding crack formation in the driving surface be dismantled and thus neither the driving surface 3 nor the joint tightness are adversely affected.

2 to 4, the molding 1 'is shown in a second embodiment, which on the one hand has the joint molding 21 with the molded projection 6 as a one-piece component and on the other hand merges via a connecting zone 22 into the support profile shoulder 7, which in the manner of a cover leg 23 on the one hand rests on the concrete block 2 and on the other hand forms a substantially vertically extending handle leg 24. A grip part 24 ′ corresponding to this grip leg 24 is provided on the filler part 14 in FIG. 1, it also being conceivable to also provide the outer molded part 15 with an approach which simplifies its handling.

In an expedient embodiment, the molding l ^{1 is formed} on the underside in the region of the cover leg 23 with the adhesive surface area 25, a releasable adhesive connection being provided at this point, for example. It is also conceivable that the adhesive surface area 25 takes up the entire length of the support projection 7 or, similarly to the embodiment according to FIG. 1, the adhesive surface is provided on the side surface 4.

The molding 1 'has, in an expedient configuration, on its side surface 4 directed towards the shaped concrete block 2 a profiling of the connecting zone 22 corresponding to a chamfer 27 or the like Pulling off the molding 1 'remains in the joint, similar to the embodiment according to FIG. 1. In the region of the molded projection 6 directed towards the adjacent usable surface 3, the molded strip 1 'is preferably provided with a horizontally extending upper pull-off surface 26 on the top surface 11. This contour 26 can advantageously be used in the production of the usable surface 3 from cast concrete as a reference edge for a tool (not shown) provided for removing the cast concrete. With different spacing dimensions H and K (FIG. 3, FIG. 4), with reference to a central laying plane L shown with a dash-dot line, there are different variants of a height adjustment of the pull-off surface 26 (or that of the same level with this) extending usable area 3) on the upper side 27 of the concrete block 2. With the molding 1 and its largely variable cross-sectional profile design, the intended height of the usable surface 3 towards the concrete block 2 can be achieved with high accuracy, while at the same time the installation conditions are considerably simplified.

The above-described moldings 1, 1 'can be dimensioned differently in the area of the handle parts 24, 24' and / or the cover leg 23, it being conceivable to replace the handle part with a groove profile for an auxiliary tool (not shown) that can be inserted into it for pulling off , or to provide the cover leg 23 with a profile attachment 28 which engages behind the surface contour 27 '(FIG. 4) of the shaped concrete block 2 in the manner of an abutment.

In an advantageous embodiment, the film part 16 'located at the lower edge region of the molding 1' is additionally connected to the base part 13 'via an adhesive layer 30 (FIG. 2) forming an upper adhesive zone 31, with which in a lower region of the side surface 8 there is simultaneously a connection of the film part 16' to the concrete block 2 via a second adhesive zone 32 is formed. The side surface 8 is thus covered above this second adhesive zone 32 up to a vertical region 8 ', the chamfer region 27 and the adhesive surface region 25 in such a way that contamination of the concrete block 2 is largely avoided in this region and when the usable surface 3 is cast on a clean joint is formed. At the same time, the handle part 24 is effective in the manner of a flow wall in this manufacturing phase and thus the cleanliness in the area of the stone top is guaranteed even under rough operating conditions when the usable surface 3 is cast on.

5 to 7 show respective end views of the cross-sectional design of further molding strips 101, 101 ', 201, which are provided in the region of their longitudinal side surfaces 4' and 5 'with a support profile 40, 41 and 42, respectively, having shape recesses. A liquid concrete can be introduced into the profiles when producing a concrete block 2 '(FIG. 8) or when pouring the usable surface 3, so that it forms an inseparable connection with the respective molding 101, 101', 201 after hardening. In the embodiments according to FIGS. 5 and 6, the support profiles 40, 41 are provided with a plurality of groove profiles 43 which merge towards the bottom region of the molding 101, 101 'into a molding 44, 44' forming the laying gap and in which 7, the support profile 42 is provided only in the region of the longitudinal side surface 4 ', this with a individual arch groove 46 is designed in the manner of an abutment, which merges into a shaped shoulder 45 on the bottom side.

The molding strips 101, 101 'according to FIGS. 5 and 6 are provided with a respective division zone 47 above their support profiles 40 and 41, so that the molding strips 101, 101' (FIG. 8) in the installed position are in the loading area This zone 47 provided as a predetermined breaking line can be separated under the effect of the tensile force F introduced via the handle part 24 'and the upper part 15' of the molding 101, 101 'can be pulled out of the installed position, while the lower part 13 'is fixed to the concrete with the respective support profiles 40, 41, 42 in a connecting position. In the embodiment according to FIG. 7, a slot 48 is provided as the dividing zone, so that the molding 201 can be separated in a residual connecting region 49 under the action of the tensile force F and then this upper part 15 'of the molding 201 is removable.

After the respective upper part 15 'has been pulled out of the installed position (FIG. 8), the lower part 13' remains in the manner of an elastic intermediate part in the bottom region of a joint formed above it (not shown). This joint can be poured out with a sealant, for example a plastic that is elastic after hardening, in such a way that it forms an adhesive connection with the concrete material in the region of the side surface 5 and the connection surface E 'and also in the region of zone 47 on the lower part 13 is liable. With this embodiment of the joint seal, the sealant is fixed in the manner of a two-flank adhesion in such a way that relative movements of the stone 2 'to the useful Surface 3 can be compensated for without damaging the joint seal and contact with the side surface E 'of the stone 2' and the cast-on side surface 5 is reliably avoided in the case of high surface loads by the part 13 'acting as a buffer (FIG. 8).

8, the molding strips 101 and 101 'are shown in the connecting position with the molded block 2' and the usable surface 3, it being possible in particular for the connecting surfaces E 'and E ¹ ' towards the block 2 'to be formed as a result that during the production of the concrete block 2 'in its casting mold (not shown), the two molding strips 101, 101' are inserted and these harden together with the cast concrete to form the concrete block 2 'in such a way that the two parts can then be removed as a composite part, these can be fed to drying and hardening of the stone 2 and can be transported together to the installation location. It is also conceivable to provide the mold line 101, 101 ', 201 as one-piece frame parts which encompass the concrete block 2' on all sides in the bonded position during and after pouring.

With this composite cast production, the concrete block 2 'is protected from drying out on one side during the drying phase and disadvantageous crack formation, for example due to uneven setting of the cast concrete, can be prevented. During the subsequent transport, the molding strips 101, 101 ', 201 located on the shaped concrete block 2' form a protective element with which, in particular, the edges of the stone 2 'which are at risk of breakage are protected against damage.

Claims

Expectations

1. Auxiliary device for laying, in particular, concrete blocks with a molding (1; 1 ') which can be fitted between a paving surface edge (2) and an adjacent usable surface (3) and which, after removal, leaves a parting line, characterized in that that the molding (1; 1 '; 101; 101'; 201) in the area of its first longitudinal side surface (4; 4 ') facing the concrete blocks (2; 2'; 2 '') and / or on the usable surface (3rd ) directed towards the second longitudinal side surface (5; 5 ') is provided with an installation profile (6; 7) which specifies the installation position.

2. Molding bar according to claim 1, characterized in that the molding bar (1; 1 ') on the first longitudinal side surface

(4) has an adhesive surface area (E; 25) on which an adhesive is provided which fixes the molding (1; 1 ') releasably to concrete blocks (2).

3. molding according to claim 1 or 2, characterized gekenn¬ characterized in that the molding (1) is formed in several parts.

4. molding according to one of claims 1 to 3, characterized in that the molding (1) with a lower foam base part (13), a supported on this and the adhesive surface area (E) having foam filler (14) and one next this arranged on the base part (13) and having a molded projection (6)

Outer molded part (15) is provided.

5. molding according to claim 4, characterized in that the outer molded part (15) is supported both on the base part (13) and on the filler part (14) extractable upwards.

6. Molding according to one of claims 1 to 5, characterized in that the molding (1; 1 ') is provided on its underside with a foil strip (16; 16 ") lying in the installed position on the concrete block (2).

7. molding according to one of claims 1 to 6, characterized in that the molding (1) in the upper region of the filling part (14) and / or the outer molding (15) is provided with a handle part (24 '; 24).

8. molding according to one of claims 1 to 7, characterized in that the molding (l ¹ ; 101; 101 '; 201) is integrally formed and a support lug (7; 7.) Directed towards the concrete blocks (2; 2') ') having.

9. molding according to claim 8, characterized in that the support projection (7) is designed as a substantially the upper surface contour (27 ') of the concrete blocks (2) following leg (23).

10. Molding bar according to one of claims 1 to 9, characterized in that a vertical handle leg (24) is formed on the top of the molding bar (l ¹ ) as the handle part.

11. Molding according to one of claims 1 to 10, da¬ characterized in that the adhesive surface area (25) is provided on the underside of the cover leg (23).

12. Molding bar according to one of claims 1 to 11, characterized in that the molding bar (1; 1 ') has a horizontal peeling surface (26) above the form projection (6) directed towards the adjacent usable surface (3).

13. Molding according to one of claims 1 to 12, da¬ characterized in that the peeling surface (26) to the handle leg (24) merges with a slope (22).

14. Molding according to one of claims 1 to 13, characterized by the fact that the adhesive surface area (25) located on the cover leg (23) lies in a plane which is based on a laying plane (L) defined by the horizontal peeling surface (26) ) runs at a height distance (H).

15. Molding according to one of claims 1 to 14, da¬ characterized in that the cover leg (23) is provided with a the surface contour (27 ') of the concrete block (2) in the manner of an abutment engaging profile approach (28).

16. Molding according to one of claims 1 to 15, characterized in that the molding (101; 101 ') in the manufacture of the concrete block (2') is connected to this to form a one-piece composite component.