DE102005039253A1 - Sealing arrangement comprises two abutting components of concrete, steel, steel concrete, cast iron or other materials together with seal profile of polymer material which bridges over and seals gap between component parts - Google Patents

Abstract

The sealing arrangement comprises two abutting components of concrete, steel, steel concrete, cast iron or other materials, together with a seal profile of polymer material, which bridges over and seals the gap between the component parts. The component parts are segments, assdembled together to form a tubular tunnel with cross and longitudinal seams. Each segment on its abutment side is preferably provided with at least an all-round recess encompassing all segment abutment sides. In each recess is a strand-shaped sealing profile (8), forming a sealing frame with frame corners. The sealing profile has open and/or closed strand grooves (11), arranged on the profile base side (9). Strand-shaped channels (12) are arranged between the grooves theh the profile face side (10). At least the sealing profile iposition coming in contact with water is an elastomer material, based on a vulcanized rubber mixture, comprising a rubber component, comprising butyl rubber or a halogenized rubber, as well as customary mixture ingredients.

Description

• – zwei aneinander stoßenden Bauteilen aus Beton, Stahl, Stahlbeton, Gusseisen oder anderen Materialien (z.B. Kunstharze) sowie aus einem Dichtprofil aus polymerem Werkstoff, das den Spalt zwischen den beiden Bauteilen abdichtend überbrückt;
• – wobei die Bauteile Segmente sind, die zu einem rohrförmigen Tunnel zusammengesetzt sind, und zwar unter Bildung eines Spaltsystems in Form von Quer- und Längsfugen, wobei jedes Segment an seiner Stoßseite vorzugsweise mit wenigstens einer alle Segmentstoßseiten erfassenden umlaufenden Aussparung versehen ist, wobei sich wiederum in jeder Aussparung ein strangförmig verlaufendes Dichtprofil befindet, und zwar unter Bildung eines Dichtrahmens mit Rahmenecken, wobei das Dichtprofil mit strangförmig verlaufenden offenen und/oder geschlossenen Rillennuten, die an der Profilbasisseite angeordnet sind, sowie mit ebenfalls strangförmig verlaufenden Kanälen, die zwischen den Rillennuten und der Profilstirnseite angeordnet sind, versehen ist.

The invention relates to a sealing arrangement consisting at least of:

• - two abutting components made of concrete, steel, reinforced concrete, cast iron or other materials (eg synthetic resins) and of a sealing profile made of polymeric material, which bridges the gap between the two components sealingly;
• - The components are segments that are assembled into a tubular tunnel, and to form a gap system in the form of transverse and longitudinal joints, each segment is preferably provided at its abutting side with at least one all segment abutment sides encompassing circumferential recess, which in turn in each recess a strand-shaped sealing profile is, with the formation of a sealing frame with frame corners, wherein the sealing profile with strand-shaped open and / or closed groove grooves which are arranged on the profile base side, as well as also strand-shaped channels extending between the grooves and the profile end face are arranged, is provided.

Since the segments usually have four abutting sides, the sealing frame consists of four composite sealing profiles, wherein the frame corners are preferably produced by the injection molding process ( EP 0 578 797 B1 . EP 1 141 594 B1 ).

A generic sealing arrangement is for example from the US 4,946,309 . EP 0 441 250 B1 and EP 0 995 013 B1 known. As a result of compressing the abutting components or segments while reducing the distance of the gap or the transverse and longitudinal joints then unfolds the sealing profile of polymeric, in particular elastomeric material under the interaction of force and reaction force its sealing performance. Such compression seals have been proven in numerous tunnel projects.

So far were only such high demands on such sealing profiles the sealing performance.

in the As part of a further development, the object of the invention therein, a generic sealing arrangement provide, wherein the sealing profile with high sealing performance also microbes is.

Is solved this task according to characteristics of claim 1, characterized in that at least the with the water in touch next point of the sealing profile is an elastomeric material, which is based on a vulcanized rubber mixture comprising a rubber component, butyl rubber or a halogenated one Rubber is, as well as usual Blend ingredients.

Advantageous embodiments The invention are mentioned in the claims 2 to 16.

The Invention will now be described by way of embodiments with reference explained on schematic drawings. Show it:

1 a tunnel consisting of segments as well as longitudinal and transverse joints;

2 a sealing arrangement with the gap to be sealed two adjacent tunnel segments according to section line ( 1 );

3 a sealing profile with two co-extruded sealing parts.

1 shows a tunnel 1 consisting of segments 2 , with the formation of transverse and longitudinal joints 3 respectively. 4 and a T-joint arrangement 5 ,

2 shows a sealing arrangement 6 with two abutting tunnel segments 2 made of concrete, each with a recess 7 (Depth d, base width w) are provided. In these two recesses now sealing profiles made of polymeric material with elastic properties are used. The actual Ab Seal of the gap (here in the form of the longitudinal joint 4 ) takes place by the compression of the opposite sealing profiles (compression seal), wherein the gap distance from S _o to S is reduced. When building tunnels must be considered that the segments 2 are arranged at an offset Z to each other. It is expected of the sealing profiles that they unfold their sealing performance under this tunnel-specific criterion. In this regard, numerous high performance seals have been developed, for example, reference is made to the cited prior art. A particularly frequently used tunnel seal is in the patent EP 0 441 250 B1 described.

3 now shows a sealing profile 8th polymeric material comprising a profile base side 9 corresponding to the recess width w ( 2 ), and a profile end face 10 that exceed the recess depth d ( 2 ) stands out. The sealing profile is with strand-shaped open groove grooves 11 as well as also strand-shaped running channels 12 which are arranged in two rows ( EP 0 441 250 B1 ).

The sealing profile consists of two co-extruded sealing parts A and B, which are in relation to the profile longitudinal plane Y, perpendicular to the profile base side 9 or profile end face 10 runs, forming a profile outer segment and a profile inner segment, which are the same size. In the present example, the sealing profile A faces the water side. With regard to the sealing part A, the material technology is now presented in detail.

The Rubber component is butyl rubber (IIR) or halogenated Rubber. The halogenated rubber, in turn, is especially Chlorobutyl rubber (CIIR) or bromobutyl rubber (BIIR). The rubber component is in each case preferably uncut. The proportion of the rubber component is 30 to 70 wt .-%, in particular 40 to 55 wt .-%.

The Rubber mixture has a filler or a filler system based on carbon black and / or silicic acids and / or Silicates and / or chalk. In particular, a filler system arrives based on soot, Magnesium silicate and chalk are used. The proportion of soot is thereby not more than 30% by weight, in particular not more than 20% by weight.

Further Blend ingredients are a crosslinker and / or cure activator or crosslinking system, processing aids, for example stearic acid, as well as optionally anti-aging agents and stabilizers. This will be referred to the general state of rubber mixing technology. As a crosslinker system comprising a crosslinker and / or vulcanization activator and accelerators, in particular zinc oxide (vulcanization activator) and zinc N-dibenzyl dithiocarbamate (Accelerator ZBEC) used.

An exemplary rubber compound is recorded in the following table:

The Rubber compound is plasticizer-free here.

Optionally, the rubber mixture may additionally be admixed with a biologically active inhibitor (biocide) which is sparingly soluble in water. With respect to the total mass of the elastomeric material the proportion of inhibitor 0.1 to 10 wt .-%, in particular 0.5 to 5 wt .-%. With regard to details thereof, reference is made to the published patent application DE 102 58 551 A1 in which a microbe-resistant clarifier membrane is described.

For the sealing part B can the hitherto known elastomers are used for seals, especially based on chloroprene (CR), nitrile rubber (NBR), styrene-butadiene rubber (SBR), an ethylene-propylene-diene copolymer (EPDM) or their blends (e.g., NBR / SBR). Besides good elastic properties All these types of materials (CR, NBR, SBR, EPDM) are characterized by these also by individual criteria, namely flame resistance (CR), abrasion resistance (SBR), weather resistance (EPDM) and swelling resistance against oils, Fats and fuels (NBR).

For the sealing part B and thermoplastic elastomers (TPE) can be used. An example of this is a TPE material which consists of a blend of a thermoplastic (thermoplastic) and an at least partially crosslinked rubber, in particular based on EPDM. The preferred plastic used is a polypropylene based on a homopolymer, copolymers or block copolymers. The rubber has a degree of crosslinking of in particular> 90%, wherein a plasticizer is used to stretch the rubber. For details (eg quantities within the TPE mixture) of this TPE material is on the publication DE 103 36 424 A1 directed.

Of the Adhesive bond between the two co-extruded sealing parts A and B is formed under co-extrusion under temperature and pressure.

1

tunnel

2

segment

3

transverse joint (Annulus)

4

longitudinal joint

5

T-joint arrangement

6

sealing arrangement

7

recess

8th

sealing profile

9

Profile base side

10

Profile End Faces

11

flutes

12

channels

A

coextruded sealing part

B

coextruded sealing part

Y

Longitudinal profile plane

Z

segment offset

S _o

gap distance (before squeezing)

S

gap distance (after squeezing)

d

depth the recess

w

base width the recess

Claims (16)

Sealing arrangement ( 6 ), consisting of at least: - two abutting components made of concrete, steel, reinforced concrete, cast iron or other materials and of a sealing profile of polymeric material, which bridges the gap between the two components sealingly; - where the components are segments ( 2 ) leading to a tubular tunnel ( 1 ), to form a gap system in the form of transverse and longitudinal joints ( 3 . 4 ), wherein each segment preferably has on its abutting face at least one peripheral recess (11 7 ), in turn, in each recess a strand-shaped sealing profile ( 8th ), with the formation of a sealing frame with frame corners, wherein the sealing profile with strand-shaped open and / or closed groove grooves ( 11 ) at the profile base page ( 9 ) are arranged, as well as with likewise strand-shaped running channels ( 12 ) between the groove grooves and the profile end face ( 10 ) are arranged, is provided; characterized in that At least the point of the sealing profile coming into contact with the water ( 8th ) is an elastomeric material based on a vulcanized rubber composition comprising a rubber component which is butyl rubber or a halogenated rubber, as well as common compounding ingredients. Sealing arrangement according to claim 1, characterized the halogenated rubber is chlorobutyl rubber or bromobutyl rubber is. Sealing arrangement according to Claim 1 or 2, characterized that the rubber component is uncut. Sealing arrangement according to one of claims 1 to 3, characterized in that the proportion of the rubber component 30 to 70 wt .-% is. Sealing arrangement according to claim 4, characterized in that the proportion of the rubber component is 40 to 55% by weight. Sealing arrangement according to one of claims 1 to 5, characterized in that the rubber mixture is a filler or a filler system based on carbon black and / or silicas and / or silicates and / or chalk. Sealing arrangement according to claim 6, characterized that the rubber mixture is a filler system based on soot, Magnesium silicate and chalk. Sealing arrangement according to claim 6 or 7, characterized that the proportion of soot is maximum 30 wt .-% is. Sealing arrangement according to claim 8, characterized in that that the proportion of soot is maximum 20 wt .-% is. Sealing arrangement according to one of claims 1 to 9, characterized in that the rubber mixture comprises a crosslinking system, comprising a crosslinker and / or vulcanization activator as well Accelerator, has. Sealing arrangement according to claim 10, characterized in that that the crosslinker system zinc oxide as a vulcanization activator and Zinc-N-dibenzyl-dithiocarbamate as an accelerator. Sealing arrangement according to one of claims 1 to 11, characterized in that the rubber mixture low plasticizer, especially softener-free, is. Sealing arrangement according to one of claims 1 to 12, characterized in that the rubber mixture additionally a biologically active inhibitor is added. Sealing arrangement according to claim 13, characterized that the inhibitor is sparingly soluble is in water. Sealing arrangement according to one of claims 1 to 14, characterized in that the sealing profile ( 8th ) consist of two or more co-extruded sealing parts which form an adhesive bond, wherein at least two different types of polymer materials are used for the sealing parts, which are characterized jointly by elastic, but otherwise by different mechanical and / or chemical and / or biological properties , Sealing arrangement according to claim 15, characterized in that there are two co-extruded sealing parts (A, B) which, with respect to the profile longitudinal plane Y, perpendicular to the profile base side (FIG. 9 ) or profile front side ( 10 ), forming a profile outer segment and profile inner segment, wherein the two profile segments are in particular the same size.