Joint sealing profile, construction joint bridging device and method of manufacturing a joint sealing profile

Abstract

A construction joint bridging device with a joint sealing profile and a joint sealing profile as such, as well as a method for producing a joint sealing profile and a method for producing and disassembling a construction joint bridging device. The joint sealing profile consisting at least partially of an elastic material and having a holding portion for fastening to the construction joint bridging device, wherein the holding portion has at least in sections a material composition which can be activated in a targeted manner by chemical, thermal and physical exposure so that the volume of the holding portion changes.

Claims

1. A construction joint bridging device for sealing roadway transitions or pavement transitions in bridges, wherein the construction joint bridging device comprises at least two supports and at least one joint sealing profile, wherein the joint sealing profile consisting at least partially of an elastic material and having at least one holding portion for fastening to the support of the construction joint bridging device, wherein each support comprises a recess of fixed volume for receiving at least one holding portion of the joint sealing profile, wherein the recess comprises an undercut into which the holding portion extends when activated, wherein at least one holding portion of the joint sealing profile is inserted into the recess, and the holding portion has, at least in sections, a material composition which can be activated in a targeted manner by a chemical, thermal, or physical exposure so that the volume of the holding portion increases, in order to form a form-fitting and force-locking component connection between the holding portion and the respective recess.

2. The construction joint bridging device according to claim 1, wherein the increase in volume is at least partially reversible.

3. The construction joint bridging device according to claim 1, wherein the material composition comprises a material which increases its volume upon exposure to a chemical.

4. The construction joint bridging device according to claim 1, wherein the material composition comprises a field-affine material, so that the exposure can occur by applying an energy field.

5. The construction joint bridging device according to claim 1, wherein the holding portion is designed in such a way that when it is subjected to chemical, thermal, and physical exposure, it forms an abutting contact with the corresponding recess.

6. The construction joint bridging device according to claim 1, wherein the material composition comprises a material swellable by a liquid, so that the exposure can occur by means of such a liquid.

7. The construction joint bridging device according to claim 6, wherein the swellable material comprises a mineral and a water-swellable polymer.

8. The construction joint bridging device according to claim 6, wherein the swellable material comprises a granulate comprising a polyacrylic acid-based superabsorber and an elastomeric carrier material.

9. The construction joint bridging device according to claim 6, wherein the material composition comprises a prepolymer so that the exposure can occur by means of water, wherein the prepolymer is configured to release CO2 depending on the swelling.

10. A method for producing a construction joint bridging device according to claim 1, wherein the joint sealing profile is produced as a profile and the material composition is introduced into the profile in the holding portion.

11. The method according to claim 10, wherein the joint sealing profile is inserted into the recess and the holding portion is subjected to chemical, thermal, and physical exposure so that its volume increases.

12. The method according to claim 10, wherein at least part of the holding portion is manufactured with the material composition as a separate component and is connected as such to the profile in a separate process step.

13. The method according to claim 12, wherein the separate component is vulcanized onto the profile.

14. A method of sealing joint in a construction joint bridging device using of a joint sealing profile, wherein the joint sealing profile consists at least partially of an elastic material and having at least one holding portion for fastening to a support of the construction joint bridging device, wherein each support comprises a recess of fixed volume for receiving at least one holding portion of the joint sealing profile, wherein the recess comprises an undercut into which the holding portion extends when activated, and the holding portion has, at least in sections, a material composition which can be activated in a targeted manner by a chemical, thermal, or physical exposure so that the volume of the holding portion increases, the method comprising: inserting at least one holding portion of the joint sealing profile into the recess; and activating the holding portion in a targeted manner by a chemical, thermal, or physical exposure so that the volume of the holding portion increases so that the volume of the holding portion increases, in order to form a form-fitting and force-locking component connection between the holding portion and the respective recess.

15. A method for disassembling a construction joint bridging device for sealing roadway transitions or pavement transitions in bridges, wherein the construction joint bridging device comprises at least two supports and at least one joint sealing profile, wherein the joint sealing profile consisting at least partially of an elastic material and having at least one holding portion for fastening to the support of the construction joint bridging device, wherein each support comprises a recess of fixed volume for receiving at least one holding portion of the joint sealing profile, wherein the recess comprises an undercut into which the holding portion extends when activated, wherein at least one holding portion of the joint sealing profile is inserted into the recess, and the holding portion has, at least in sections, a material composition which can be activated and/or deactivated in a targeted manner by a chemical, thermal, or physical exposure so that the volume of the holding portion is reduced, the method comprising reducing a volume of the holding portion in target manner by chemical, thermal, or physical exposure.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the following, the invention is explained in more detail by means of two exemplified embodiments shown in the drawings. Therein, it is schematically show in:

(2) FIG. 1 a cross-section of a first embodiment of a construction joint bridging device with a joint sealing profile according to the invention;

(3) FIG. 2 an enlarged section of the cross-section shown in FIG. 1 in the activated state;

(4) FIG. 3 a partial view of a construction joint bridging device as a cross-sectional view with a joint sealing profile according to a first embodiment in the non-activated state; and

(5) FIG. 4 a cross-section of a second embodiment of a joint sealing profile according to the invention.

DETAILED DESCRIPTION

(6) The construction joint bridging device 10 shown in FIG. 1 is used to bridge or seal a joint F located between two parts of a construction. For this purpose, the construction joint bridging device 10 has a joint sealing profile 1 extending over the joint F. The joint sealing profile 1 in turn has a left holding portion 2 and a right holding portion 3. According to the illustration in FIG. 1, the left holding portion 2 is inserted in a left support 11 of the construction joint bridging device 10 and accordingly the right holding portion 3 is inserted in a right support 12 of the construction joint bridging device 10. The left support 11 as well as the right support 12 are each firmly connected with the corresponding left component 13 and the right component 14. For this purpose, the construction joint bridging device 10 in the shown example has an anchor construction K on each side of the joint F, by means of which the respective support is anchored to the construction.

(7) FIG. 2 shows an enlarged section of the construction joint bridging device 10 shown in FIG. 1, namely the right holding portion 3 of the joint sealing profile 1 as it is in engagement with the right support 12 of the construction joint bridging device 10. The holding portion has a material composition 4 which is in an activated state. According to the invention, the material composition is designed in such a way that its volume and thus also the volume of the right holding portion 3 increases after activation. As a result, the right holding portion 3 nestles almost completely against the inner wall of the recess A of the right support 12. The material composition is dosed in such a way that, in a non-installed situation, the holding portion 3 would expand significantly beyond the volume available in recess A after activation. This ensures that in the installed situation not only a surface contact is established but also that a substantial surface pressure can be generated between holding portion 3 and recess A in the activated state. It is precisely this surface pressure that can create a good sealing effect between the support 12 and the joint sealing profile 1.

(8) In FIG. 3 the same section of the construction joint bridging device is shown as in FIG. 2, but here the material composition 4 is in a non-activated state. This is thus the situation when the profile is inserted into recess A of support 12 or when it is removed. It can be seen that the right holding portion 3 has a smaller cross-section in contrast to the activated state, which results in the holding portion being easily inserted into or removed from the opening of the recess. When inserting or removing holding portion 3 into recess A, the holding portion must be deformed only slightly or, if applicable, not at all. After activation, however, the holding portion 3 in recess A is held both frictionally and form-fittingly in recess A, since after activation of the holding portion, it creates a claw-like undercut.

(9) The second embodiment of the joint sealing profile according to the invention shown in FIG. 4 has a left holding portion 2 and a right holding portion 3, with a shape that is adapted to the shape of the recess in the support, see FIGS. 1 to 3. The material composition 4 that can be activated is also arranged in holding portions 2 and 3, as in the first embodiment. In the figure shown in FIG. 4, the shape of the holding portion after activation of the fabric composition 4 is indicated by dashed lines on the right holding portion 3. The material composition 4 at the left holding portion 3 is shown in the non-activated state.

LIST OF REFERENCE SIGNS

(10) A Recess F Joint K Anchor construction 1 Joint sealing profile 2 Left holding portion 3 Right holding portion 4 Material composition 10 Joint bridging device 11 Left support 12 Right support 13 Left component 14 Right component