Classifications

• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
  • E01C11/00—Details of pavings
  • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
  • E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
  • E01C11/10—Packing of plastic or elastic materials, e.g. wood, resin
  • E01C11/106—Joints with only prefabricated packing; Packings therefor
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
  • E01C11/00—Details of pavings
  • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
  • E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
  • E01C11/06—Methods of making joints

Definitions

• the present invention relates to a joint tape for road construction for the production of seams and / or connections, in particular for cover layers of bituminous mixtures, as well as a method for laying such a joint tape and its use.
• connection also means the use of joint tapes in the production of installation strips of mix material, which lead to internals such as manhole covers, drains or the like, wherein the mix is compacted to this.
• mixed material may be any type of asphalt, and in particular for the purposes of the present invention, an asphalt mixture, for example rolled asphalt including asphalt concrete, open-pored asphalt, (mastic) mastic asphalt or mastic asphalt.
• asphalt mixture for example rolled asphalt including asphalt concrete, open-pored asphalt, (mastic) mastic asphalt or mastic asphalt.
• Generic joint tapes are also referred to as vertical or standing joint tapes, which is referred to the edge of a mounting track or internals, which may have been previously milled and cleaned and referred to as joint edge with respect to the later resulting from the cultivation of another installation fence joint, with one of its longitudinal sides be created and pressed.
• Generic joint tapes are machined as preformed thermoplastic tape profiles, wherein a joint tape typically has a height in a range of about 2 cm to about 5 cm and a width of about 0.4 cm to about 1.5 cm.
• the profile cross-section is usually formed approximately rectangular, often with a slightly barrel-like thickening in the middle and rounding at the top and bottom.
• a joint tape which is provided on at least one side with an adhesive layer.
• the joint tape described therein is thus constructed in principle of two layers, and consists of the joint tape body and an adhesive layer arranged on one side thereof.
• the big advantage of this joint tape is that even without the use of a propane gas sufficient adhesion to the flank of an existing installation fence is achieved simply by pressing the joint tape, so allow the outside temperatures.
• the subsequent rolling of the mix and the other steps then correspond to those that are known from the single-layer joint tapers ago.
• the in the DE 196 03 896 A1 A disclosed adhesive layer is one which is manufactured on the basis of hydrocarbon resins and various styrene-butadiene block copolymers and styrene-isoprene block copolymers, in particular triblock copolymers.
• EP 1 023 414 A1 an adhesive layer based on bitumen.
• EP 1 983 102 A2 referenced which also discloses a generic joint tape, but points out that the joint tape body is sufficiently tacky, and is provided with a cover layer less sticky.
• the cover layer itself have a greater thickness than the joint tape body, so that the joint tape body within the meaning of this document within the meaning of the prior art itself as an adhesive layer and the top layer is to be addressed as a joint tape body.
• the joint tape body known from the prior art joint tapes have at best a low tackiness.
• the stickiness of bitumen materials can be influenced, in particular reduced, by the addition of mineral fillers.
• the low tack of the joint tape body known from the prior art joint tapes alone is not sufficient to provide a sufficient attitude of the joint tape on the flank of an existing installation track without heating available. In the case of the at least two-layer joint tapes with a joint tape body and an adhesive layer arranged on one longitudinal side of the same, this can just be omitted.
• the joint tapes known from the prior art are provided on at least one side with a separating layer, for example of a wax paper or a fleece, and packaged in the rolled-up state.
• the separating layer ensures that there is no sticking or fusing under the influence of heat on the packaging of the rolled-up joint strip, so that it can be safely stored and processed on site.
• single-layer bitumen joint tapes known from the prior art have the disadvantage that the heating with a propane gas flame necessary for successful processing thereof is quite time-consuming.
• even a slight stickiness of the joint tape body / the joint strip leads to an adhesion of dirt particles, which makes handling the joint tapes difficult.
• the latter also applies to at least two-layer joint tapes with a joint tape body and an adhesive layer arranged on a longitudinal side thereof. It should also be considered that when depositing such provided with an adhesive layer joint tape, the release paper must be removed, and then the adhesive layer is exposed, so here is an accidental bonding of the joint tape with other objects on the site or the joint tape with itself with the formation of loops or the like is possible.
• a joint tape for road construction for the production of seams and / or connections especially in cover layers of bituminous mixture
• a joint tape body of a bituminous material and at least one adhesive layer arranged on this, wherein the adhesive layer by thermal and / or chemical activation of a Stickiness which allows sufficient for the production of seams and / or connections adhesion to a flank of the seam and / or the terminal, and in the non-activated state at a temperature of 23 ° C does not impart such adhesion.
• the joint tape according to the invention is at least constructed in two layers, with the joint tape body as a layer and the at least one adhesive layer as another layer.
• the adhesive layer is formed separately from the joint tape body and arranged on this, wherein a certain penetration of the adhesive layer in the joint tape body is possible and possibly also can not be avoided due to the manufacturing process. In any case, two separate masses are used for the joint tape body and for the adhesive layer.
• the adhesive layer is at least in a temperature range from about -20 ° C to about + 45 ° C, preferably from about -10 ° C to about 42 ° C, more preferably in a temperature range from about 5 ° C to about 40 ° C, essentially not sticky. Combinations of the aforementioned limits are possible.
• the joint tape according to the invention has the great advantage that it avoids the adhesion of dirt particles on the adhesive layer before activation of the same, since they are not sticky at normal outdoor temperatures at which generic joint tapes are used. As a result, the shelf life and transportability and the handling of the joint tape according to the invention is facilitated on site, especially if this has arranged on both sides and over the full side surface of the joint body, the adhesive layer.
• the joint tape according to the invention has an improved elasticity over the known from the prior art joint tapes, in particular single-layered, one can talk about a doubling of a conventional elasticity Ein Mrsiger known waterstops, whereby the increased demands on the elasticity of joint tapes is taken into account.
• an activatable adhesive layer allows a highly tacky formation of the same after activation, wherein the tack then goes well beyond that which is known in known from the prior art two-layer joint tapes with an adhesive layer on a joint tape body.
• the activatable adhesive layer does not adhere to the release paper, so that rolling up of the joint tape according to the invention without provision of a separating layer of release paper or the like is made possible. This is particularly advantageous when arranging in each case an adhesive layer on each side surface of the joint tape body.
• a considerably shorter activation tent in particular in a thermal activation, achieved because the adhesive layer is activated faster than a joint tape body is melted on the surface.
• the processing of joint tapes according to the invention is particularly favored when using automatic or automatic processing devices for joint tapes, since the provision of an activatable adhesive layer arresting to deflecting, pressure and other guide elements is prevented.
• "Substantially non-sticky" in the sense of the present invention means that the adhesive layer at most gives a slight impression of adhesion or adhesion up to a temperature of almost 50 ° C., in particular in the temperature range mentioned, in contact with the fingers of a hand of the operating personnel , Dirt particles with a grain size greater than 0.5 mm can not adhere to the adhesive layer.
• the adhesive layer at a temperature of 23 ° C is more preferably not sticky, d. H. in particular, no impression of adhesion and stickiness is imparted to the finger when touched by the fingers of one hand.
• the tackiness of the adhesive layer in the non-activated state is less than the tackiness of the joint tape body itself.
• the tackiness itself is provided by the adhesive layer after activation, and is sufficient for the joint tape according to the invention to be functional and functional on a flank of a seam and / or a seam Attach attachment to adhesion, so that this is held there in the sense of a pre-assembly, so that the subsequent installation of the installation guards is ensured without it comes to a drop in the edge adhering to the invention joint tape of this.
• the adhesive layer then has a stickiness which allows adequate adhesion to the flank.
• the joint tape body of the joint tape according to the invention preferably has a height of about 2 cm to about 5 cm and a thickness of about 0.4 cm to about 1.8 cm, and thus has a substantially rectangular cross section, optionally exactly rectangular cross section on. Due to the manufacturing process for the joint tape body, the cross section is somewhat barrel-shaped in that in the middle of a slight thickening takes place, and there are rounding at the top and bottom.
• the at least one adhesive layer is applied to at least one side surface of the joint tape, and covers it at least partially, preferably almost completely or completely. In this case, the adhesive layer may also be applied in the form of a pattern, for example a waffle pattern, or else linear or similar.
• the adhesive layer preferably has a thickness in a range of about 0.1 mm to about 5 mm, preferably in a range of about 0.5 mm to about 2 mm, more preferably from about 0.6 mm to about 1.3 mm , on.
• Bitumen-containing material according to the present invention refers to any material which contains bitumen, in particular in an amount of at least 10 wt .-%, based on the total mass of the joint body.
• the bituminous material may, in addition to bitumen, other materials, such as in particular mineral and / or cellulose fillers, plasticizers, polymers et cetera have.
• the addition of polymers in particular increases the elasticity of bitumen, this is referred to as polymer-modified bitumen and, to the extent that it meets the requirements of road construction, also of polymer-modified road bitumen.
• bitumen-containing material may be formed of several different bitumen, for example bitumen with a different needle penetration, measured according to DIN EN 1426.
• bituminous material has a bitumen with a needle penetration in a range of about 160 to 220 according to DIN EN 1428 each 0, 1 mm up.
• the mix used for the production of cover layers is in particular an asphalt mixture, preferably in the context of the present invention, as described above in the description of the general state of the art, and may in particular be selected from a group comprising rolled asphalt and mastic asphalt , and may in particular be asphalt concrete, (spilted) mastic asphalt and / or open-pored asphalt (PA).
• asphalt mixture preferably in the context of the present invention, as described above in the description of the general state of the art, and may in particular be selected from a group comprising rolled asphalt and mastic asphalt , and may in particular be asphalt concrete, (spilted) mastic asphalt and / or open-pored asphalt (PA).
• the adhesive layer can basically be single-layer, but also multi-layered.
• a multi-layer is achieved, for example, in that several layers of the adhesive layer are applied in several steps in the production of the joint tape according to the invention.
• the at least one adhesive layer is chemically and / or thermally, more preferably thermally, activatable.
• a chemical activation can by spraying or otherwise wetting the adhesive layer, for example with a solvent such as ethanol, acetone or acetic acid or other carboxylic acids.
• a solvent such as ethanol, acetone or acetic acid or other carboxylic acids.
• other known from the prior art chemical activators, including isocyanate-based, can be used.
• the activation preferably takes place thermally, in particular by the propane gas flame already known from the prior art, the duration of the activation advantageously being considerably reduced in comparison to in particular single-layered joint tapes known from the prior art, the duration advantageously being within a range from about 0.1 seconds to about 30 seconds, preferably in a range of about 0.2 seconds to about 15 seconds, more preferably in a range of about 0.3 seconds to about 3 seconds, and most preferably in a range of about 0.5 seconds to about 2 seconds.
• Activation provides a strong tack of the adhesive layer, thereby securely holding it to the flank of an existing installation track, thus allowing for the successful production of sutures and / or connections.
• Thermal activation in the sense of the present invention also includes activations by irradiation, insofar as this causes heating in the adhesive layer, as is possible, for example, by the use of microwave radiation or the like. Incidentally, it is not harmful for the purposes of the present invention, if by activating the adhesive layer at least tellweise also a melting of the joint tape body takes place, but this is not necessary to achieve the success that can be achieved with the joint tape according to the invention.
• the joint tape according to the invention has a tensile strength according to the joint model of Rabe according to the Swiss standard SNV 971920 at a temperature of -10 ° C in a range of about 16% to about 50%.
• Typical single layer fusible joint tapes have stretch capabilities in a range of about 7% to about 13%.
• the joint tape according to the invention has an elongation capacity in a range of about 20% to about 45%, more preferably in a range of about 22% to about 38%.
• the stress at the joint flank can be determined at elongation, which may amount to a maximum of 1 N / mm 2 .
• the joint tape according to the invention in this case has forces in a range of about 0.2 N / mm 2 to about 0.6 N / mm 2 , preferably in a range of about 0.25 N / mm 2 to about 0.6 N / mm 2 on.
• the standard concrete prisms are coated before pressing with a primer, which is usually prescribed by the system and adapted to the respective joint tape.
• the specimen formed by the standard concrete prisms and the joint tape is stored after removal of the spacer at -10 ° C, and after reaching the test temperature of -10 ° C then incorporated into the meter, the so-called Rabe device, and in accordance with the Swiss standard SNV 671920 determines the elasticity.
• the Rabe testing device of the company Maschinen-und Adjust Josef Freundl, Wennegsen, Germany, of the FM-R type used in the present invention was retrofitted for fully automatic operation, and force-displacement measurements were carried out and the path and force recorded permanently.
• the maximum force F max during elongation was determined for the joint tape according to the invention, which ranges from about 1000 N to about 4000 N, preferably in a range from about 1200 N to about 3700 N, even more preferably in one Range is from about 1300 N to 3600 N.
• the joint tape body comprises, in addition to at least one bitumen material, at least one plasticizer, at least one mineral filler and / or at least one polymer.
• the at least one plasticizer is preferably selected from a group comprising oils, in particular mineral oils including white oils.
• Plasticizers may be present in the joint tape body in an amount ranging from about 1 weight percent to about 10 weight percent, preferably ranging from about 2 weight percent to about 6 weight percent, based on the total weight of the composition Joint tape body, be present.
• the at least one mineral and / or cellulose filler which according to the present invention is comprised of the joint tape body, may for example be in the form of flour or fibers, for example as rock flour.
• talc may be added to the joint tape body, ie in particular in the form of natural mixtures of magnesium silicate hydrate and magnesium aluminum silicate hydrate.
• cellulose fillers especially in the form of fibers, in particular cellulose fibers, may be present in the joint tape body, advantageously in an amount in a range of about 0.5% by weight to somewhat 9 wt .-%, more preferably in a range of about 2 wt .-% to about 7 wt .-%, based on the total mass of the joint tape body.
• plastics in particular polymers, in particular those selected from the group of natural and synthetic rubbers and / or polyolefins, can also be added, including in the form of fibers.
• natural and synthetic rubber in particular isobutene-isoprene rubber, styrene-butadiene rubber, polybutadiene rubbers, EPDM rubber or isoprene rubber.
• the natural and / or synthetic rubbers are in the joint tape body of the joint tape according to the invention advantageously in an amount in a range of about 0.2 wt .-% to about 8 wt .-%, more preferably in a range of about 0, 5 wt .-% to about 5 wt .-%, each based on the total mass of the joint tape body included.
• Polyolefins preferably polyethylenes and / or polypropylenes, more preferably low density polyethylenes, are preferably present in an amount ranging from about 1% to about 10% by weight, more preferably in an amount of about 2% by weight. % to 15 about 7 wt .-%, each based on the total mass of the joint tape body, contained in these.
• the proportion of mineral fillers ie those fillers which are still present after an ashing of the joint tape, is advantageously in a range of about 10 wt .-% to about 65 wt .-%, more preferably in a range of about 20 wt.
• % to about 55 weight percent more preferably in a range of about 20 to 35 weight percent, based on the total mass of the joint tape body.
• the at least one bitumen, which is comprised by the joint tape body is in an amount thereof in a range of about 20 wt .-% to about 80 wt .-%, preferably in a range of about 30 wt .-% to about 60 wt. -%, more preferably in a range of about 30 wt .-% to about 50 wt .-%, each based on the total mass 30 of the joint tape body before.
• bitumen material used with a softening point ring and ball measured according to DIN EN 1427, in a range of about 35 ° C to about 43 ° C and a needle penetration at 23 ° C, measured according to DIN EN 1426, in a range of about 160 to about 220 per 0.1 mm.
• the bitumen can be tempered by the addition of polymers, in particular those mentioned above, so that then polymer-modified bitumen or Road construction bitumen present.
• the joint tape body comprises at least one polymer in an amount ranging from about 1.5 wt% to about 20 wt%, preferably in a range from about 4 wt% to about 15 wt%.
• styrene-butadiene-diblock, and / or triblock or are used as polymers.
• the polymers can be added as flour, in spherical form, as granules or as fibers.
• the at least one adhesive layer comprises at least one polymer selected from a group comprising polyolefins, natural rubber, and / or synthetic rubber (synthetic rubber), styrene-butadiene and / or styrene-isoprene copolymers being particularly preferred as synthetic rubber and / or or block copolymers, in particular mixtures of triblock with diblock copolymers thereof.
• Styrene-butadiene copolymers having a polystyrene content in an amount in a range from about 25% by weight to about 35% by weight, based on the total amount of the polymer, are advantageously selected.
• Styrene-isoprene block copolymers having a proportion of about 42% are preferred.
• the polymers mentioned are in an amount ranging from about 8% to 25%, preferably about 10% to about 18 wt .-%, contained in the adhesive layer, based in each case on the total mass of the adhesive layer.
• both styrene-butadiene and styrene-isoprene copolymers are particularly preferably present in the adhesive layer in the form of block copolymers, more preferably in about the same amount.
• the adhesive layer according to the invention comprises styrene-butadiene copolymers or block copolymers in an amount ranging from about 4% by weight to about 13% by weight, more preferably in a range from about 6% by weight to about 10% by weight. %, on.
• Styrene-isoprene copolymers or block copolymers have the adhesive layer of the invention, based on the total mass thereof, preferably in the same order of magnitude as immediately above is given based on styrene-butadiene copolymers or block copolymers.
• the adhesive layer according to the invention comprises a further polymer selected from a group comprising natural and / or synthetic resins, preferably comprising thermoplastic resins, in particular thermoplastic synthetic resins.
• thermoplastic resins in particular thermoplastic synthetic resins.
• resins which are obtained from unsaturated aliphatic olefins and / or Dlolefinen by thermal cracking of naphtha are particularly preferred.
• Thermoplastic aliphatic hydrocarbon resins are preferably used as thermoplastic resins, obtained from the aforementioned cracking process.
• Particularly preferred are aliphatic hydrocarbon resins having a molecular weight in a range of about 1,000 to 5,000, preferably about 2,000 to 3,500 used.
• aliphatic hydrocarbon resins which have a melt viscosity at 180 ° C. according to ASTM D 3236 in a range from about 100 cps to about 800 cps, preferably in a range from about 250 cps to about 500 cps.
• the said resins can be at least partially replaced by bitumen.
• thermoplastic resins are preferably present in an amount ranging from about 10% to about 80% by weight, more preferably in a range from about 30% to about 60% by weight. more preferably in a range from about 35% to about 55% by weight, based on the total weight of the adhesive layer, in the adhesive layer.
• the adhesive layer may further comprise at least one mineral filler, at least one plasticizer and / or at least one bitumen material.
• the corresponding constituents can be selected from those which are also used for the production of the joint tape body.
• the at least one mineral filler of the at least one adhesive layer is preferably a flour, more preferably a limestone flour.
• the mineral filler is advantageously present in an amount of from about 3% to about 12% by weight, more preferably from about 5% to about 9.5% by weight, based on the total weight of the adhesive layer contain.
• the plasticizer is advantageously contained in an amount of about 10% to about 32% by weight, more preferably about 15% to about 25% by weight, based on the total weight of the adhesive layer.
• the adhesive layer may also contain bitumen, advantageously in an amount ranging from about 4% to about 14% by weight, more preferably in an amount of about 6% to about 12% by weight, based on the total weight of the adhesive layer.
• the present invention further relates to a method for laying a joint tape according to the invention, as described above, wherein in a first step, the joint tape applied to a flank of a seam and / or a terminal, in a second step at least one adhesive layer is chemically and / or thermally activated and in a third step, the joint tape is pressed against the flank.
• the activation takes place thermally at a temperature of at least 50 ° C, more preferably at a temperature in a range of about 80 ° C to about 200 ° C, more preferably in a temperature range of about 120 ° C to 160 ° C.
• the duration of the activation is in a range of about 0.1 seconds to about 30 seconds, more preferably in a range of about 0.2 seconds to about 15 seconds, even more preferably in a range of about 0.3 seconds 3 seconds. It can also be at least partially melted the joint tape body, but this does not preclude the success of the present invention.
• the said activation period is in any case considerably shorter than that which is necessary in single-layer joint tapes, which have only one joint tape body, in order to achieve sufficient adhesion to achieve an attitude of the joint tape on the flank here.
• the present invention relates to the use of the joint tape according to the invention for the production of seams and / or connections in cover layers of asphalt mix in road construction.
• the bitumen used was one having a needle penetration in a range of 160 to 220 per 0.1 mm and a softening point of ring and ball of 35 ° C to 43 ° C.
• a styrene isoprene block copolymer a styrene-isoprene-styrene triblock / styrene-isoprene diblock copolymer was used.
• soft is a styrene-isoprene-styrene triblock / styrene-isoprene diblock copolymer having a content of about 42% styrene-isoprene diblock copolymer.
• styrene-butadiene block copolymer one which has about 31 wt .-% of polystyrene, based on the total amount of the polymer.
• aliphatic hydrocarbon resin a thermoplastic resin having a softening point ranging from about 94 ° to about 102 ° according to ASTM E28 and a melt viscosity (BRF) at 160 ° C of 1.45 cps measured according to ASTM D3236 was used.
• the limestone powder used had a CaCO 3 content of 97% by mass, and a residue when screened with a 90 ⁇ m sieve of 6.4% by mass.
• the mineral oil used had a melting point of about -18 ° C and a viscosity of about 150 cSt at 40 ° C.
• the talc used had a content of SiO 2 of about 50% and a content of MgO of about 28% with an ignition loss at 1050 ° C. over one hour of 9%.
• the cellulosic fibers had a cellulose content of about 75% and an ash content after ashing of about 20%, an average fiber length of about 1,000 ⁇ m and an average fiber thickness of about 40 ⁇ m.
• LDPE low density polyethylene
• M w molecular weight
• M w density of 150,000
• density density of about 0.93 g / cm 3
• Melting temperature of about 114 ° C
• melt index of 0.3 g / 10 min
• the isobutene-isoprene rubber used had a Mooney viscosity in a range of 46 to about 56.
• the joint tape according to the invention made on the basis of the above-mentioned composition by first producing a joint tape profile with a dimension of about 4 cm high and about 1 cm wide was provided with an adhesive layer in a thickness of 0.8 mm.
• the joint tape according to the invention was then examined in terms of its extensibility and adhesion to the joint model of Rabe, as set forth in the description, and thereby with the products on the market TOK-band SK and TOK-Band Spezial of DENSO GmbH, Leverkusen, compared.
• the joint tape according to the invention is thus not only easier to handle compared to the known from the prior art joint tapes due to the significant reduction in the adhesion of dirt particles, but also has a superior elasticity, which predestined in view of the increased stresses on roads this to be used in road construction.

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• Engineering & Computer Science (AREA)
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• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Adhesives Or Adhesive Processes (AREA)
• Adhesive Tapes (AREA)

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• 2011
  • 2011-08-02 DE DE102011109114A patent/DE102011109114A1/de active Pending
• 2012
  • 2012-08-01 EP EP12005602.3A patent/EP2557230B1/fr active Active
  • 2012-08-01 DE DE202012013688.7U patent/DE202012013688U1/de not_active Expired - Lifetime
  • 2012-08-01 ES ES12005602T patent/ES2851016T3/es active Active
  • 2012-08-01 PL PL12005602T patent/PL2557230T3/pl unknown
  • 2012-08-01 HU HUE12005602A patent/HUE053692T2/hu unknown

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