DE19713778A1 - Joint in poured concrete building structure - Google Patents

Abstract

The system used in a building seals the joint between two masses of poured concrete. A concrete wall (1) with a separating layer (11) attached to it stands on a floor (12) forming part of a shuttering assembly. The separating layer (11) on the wall stops short of the floor. A flexible hollow (6) seal member at the bottom has an upstanding flange (3) nailed (7) to the already poured concrete and a horizontal flange (4) with a bulbous edge (5) extending into the space (13) yet to be filled with concrete. The thick part of the seal member is held in an upright U-section channel (10) integrated with a broad foot (8) of trapezoidal cross-section, which stands on the floor. The edges of the trapezoidal foot have sealing strips (9) which press against the floor.

Description

It is common for large concrete structures to be jointed into individual sections divide. The main reasons for this are the avoidance of cracks by exceeding the recordable concrete tensile stresses Changes in the shape of the concrete during the manufacturing process or during temperature changes stungen, as well as purely practical matters in construction, z. B. cheap Work cycles for formwork, reinforcement or concreting. The length of time that a building can be used is to a large extent different from that Water tightness dependent. Joints usually have to do something be executed watertight, for which the state of the art sealing tapes of different designs (see e.g. p. 11 to 116 by Norbert Kla wa, Alfred Haack: "Tiefbaufugen", Ernst & Sohn publishing house for architecture and technical sciences, Berlin, 1990). Concrete sealing tapes (only sealing function) have the advantage of no longer coming out of the joint to fall (e.g. as a result of extreme cold) and also to close more tightly eat. It is to beautify the joints and to protect against splash water also usual to insert joint sealing tapes into the joints. This ge happens because the joint separating plate (usually a mineral fiber plate), that keeps the joint free during concreting, peeled out at the edge of the joint, is scratched or milled (usually 5-6 centimeters deep) and then a finishing tape filling the gap in the vacated space introduced (e.g. knocked in or pressed in). A disadvantage of such Bands is that they move when the neighboring blocks or even low temperatures can fall out. Another problem at the joint is the joint edge: If they are concreted in at right angles, they break when they are scrapped len out ugly. The pro likes to step on right-angled edges  Bleeding out: Fine parts of the concrete escape there through rit zen in the formwork. To prevent this, there are profile strips with im essential trapezoidal cross-section before the concreting process joint sealing tapes concreted in on one side and after deducted from the hardening of the subsequent construction phase.

There are sealing tapes for joints that form joints in both Concrete parts are concreted over the boom and onto a profile bar removable can be plugged on. Complexity creates problems the formwork to be used (interrupted face formwork).

So there is still a need for a simple process and a simple device for a beautiful joint finish.

For this purpose, the invention specifies a joint sealing tape that allows it to to forego the tedious peeling of the joint separating plate, at the same time is able to seal adequately and additionally by pushing on a reusable profile strip enables the creation of beautiful edges light.

The object is achieved in that the joints according to the invention closing band concreted in on one side only via a horizontal bracket whereas it is on the other side via a vertical boom by staple gun or similar means simply on the already created and ent switch concrete component is attached.

The horizontal, later concreted boom can be used for a better bond have profiles with the concrete, or openings (holes).

At the same time, the joint edges can be chamfered to the joint opening towards a profile strip with an essentially trapezoidal cross section attached, preferably strip-shaped grippers are attached, the after finishing the concreting and after demoulding, simply abge can be pulled and reused.  

On the substantially trapezoidal part of the profile bar, the grippers preferably do not sit, as usual, directly at the corners of the shorter tra pezseite, but are offset inwards on this side, so that a horizontal surface is formed. This horizontal surface (see Fig. 1) prevents slipping of the profile bar relative to the concrete part created when the formwork sheet is pressed from below against the profile bar to achieve a sealing seal for the new formwork formed in this way. Soft sealing lips on the corners of the longer trapezoidal side improve the sealing effect.

It has also been shown that the profile strip is securely clamped a height of the part of the ban filling the joint via the gripper bars des, hereinafter referred to as the band body, of about 40 millimeters required. The outside of the belt body can be structured (e.g. ribbed felt) to ensure better grip on the grippers.

An embodiment of a joint termination tape according to the invention, which is used in a joint to be concreted, in combination with a matching profile strip according to the invention for beveling edges, is shown in FIG. 1.

The procedure for using the joint closing tape described This provides for the future joint to be formed after the formwork has been removed Concrete part of an end tape according to the invention by means of its vertical To attach the boom to this (e.g. by tacking or gluing), a To attach the profile strip to the tape body, a joint separating plate to be brought in (this can of course also be done before final band happen, as well as other procedural steps in time can be arranged differently), to drive up the formwork carriage and that Raise the formwork sheet until the profile strip or you are there sealing lips for the newly created formwork  practice and fill the resulting formwork with concrete, the hori zonal boom of the final tape is embedded.

Reference list

1 created concrete part
2 belt bodies
3 vertical arms
4 horizontal arms
5 composite concrete profile
6 cavity
7 nail
8 trapezoidal profile strips
9 sealing lip
10 grippers
11 joint separating plate
12 formwork sheet
13 formwork cavity to be filled

Claims (5)

1. A device for closing joints on structures that are constructed from several sub-units, consisting of a band body ( 2 ) with laterally projecting arms ( 3 , 4 ) at least two different types, characterized in that

• a.) which is a type of boom, a vertical boom ( 3 ) (continuous or interrupted belt) of the belt body, which is designed so that it is designed as an extension of the already created concrete part ( 1 ) lying side of the belt body ( 2 ) , lies there against the concrete and is attached to this concrete by mechanical or adhesive fasteners,
• b.) the other type of boom (continuous or interrupted tape) on the opposite side of the sealing tape and substantially perpendicular (angle greater than 450) to the first vertical boom in the form of a horizontal boom ( 4 ), which is in the following concreting process in the second joint-forming concrete part is toned with einbe.

2. Apparatus according to claim 1, characterized in that the gap spacing filling band body ( 2 ) on which the brackets ( 3 , 4 ) are attached has a substantially rectangular or oval outer cross-section on which in the case of a joint formation a profile strip ( 8 ) can be plugged on, which is clamped with two parallel, preferably strip-shaped grippers ( 10 ) on both sides of the belt body ( 2 ) and can be pulled off after the concrete has hardened. 3. Device according to at least one of claims 1 and 2, characterized in that the cross section of the band body ( 2 ) has a size of a width of 25 millimeters and a height of 40 millimeters and the vertical boom ( 3 ) is of the order of 35 millimeters and the horizontal boom ( 4 ), which can also have profiles ( 5 ) or openings, are on the order of 25 millimeters. 4. The device according to at least one of claims 1 to 3, characterized in that the band body in cross section has one or more cavities ( 6 ) in the manner of hollow profiles. 5. A method for sealing joints with the aid of a device according to at least one of claims 1 to 4, characterized in that without strictly determining the sequence

• a.) to the already created concrete part ( 1 ) of a future joint, which has broken edges in the lower area due to the shape of its formwork, which essentially correspond to the shape of the profile strips according to claim 2, a joint tape and profile strips ( 8 ) according to at least one of claims 1 to 4 is attached mechanically or by gluing by means of its vertical boom;
• b.) joint separating plates ( 11 ) for keeping the joint free and a profiled strip ( 8 ) of the type described is attached to the band body ( 2 ) by means of its gripper ( 10 );
• c.) the formwork for the second joint-forming concrete part is created or started up,
• d.) a concreting process is carried out, through which the horizontal boom ( 4 ) is embedded,
• e.) the profile strip ( 8 ) is removed after stripping.