EP0049485B1 - Coating, method for its production and its use - Google Patents
Coating, method for its production and its use Download PDFInfo
- Publication number
- EP0049485B1 EP0049485B1 EP81107813A EP81107813A EP0049485B1 EP 0049485 B1 EP0049485 B1 EP 0049485B1 EP 81107813 A EP81107813 A EP 81107813A EP 81107813 A EP81107813 A EP 81107813A EP 0049485 B1 EP0049485 B1 EP 0049485B1
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- Prior art keywords
- bitumen
- rubber
- binder
- noise
- covering
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/26—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre
- E01C7/265—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre with rubber or synthetic resin, e.g. with rubber aggregate, with synthetic resin binder
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- 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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
- E01C19/104—Mixing by means of movable members in a non-rotating mixing enclosure, e.g. stirrers
Definitions
- the invention relates to a new surface, in particular road surface, which consists of mineral fillers, rubber sprinklers and a binder based on bitumen. Furthermore, the invention relates to a method for producing this covering and its use for sound absorption, in particular of roadways.
- the fight against noise plays an important role in the fight against long-distance pollutants.
- the construction of noise barriers and noise barriers on the edge of busy streets near residential areas is one of these measures.
- An object of the present invention is therefore to develop a road surface covering which reduces the formation of rolling noise and the rest Driving noise is little reflected and swallows to a considerable extent. It was to be expected that road surfaces made of elastic asphalt with a significant proportion of elastomeric substances could be suitable for achieving noise abatement at the source. However, such a noise-reducing cover layer must meet all requirements for traffic loads and other conditions.
- a further object of the present invention was therefore to introduce rubber rain rates in a percentage higher than 5% in road surfaces, without the quality of these road surfaces thereby being impaired.
- DE-OS 2 119 178 it is known to add rubber vulcanizate particles to the filler and binder after heating in order to adhere to the heated rock particles as a result of partial thermal change or decomposition.
- This addition of a total of 3% by weight of thread-like and powdered rubber vulcanizate leads to deteriorated properties of the pavement coverings.
- DE-OS 2 253 495 describes a method for producing a covering layer in which a mixture of grit and bituminous binder is applied to the substructure and this supporting structure is then solidified by mortar penetrating into the cavities, in which fillers or elastomers stiffening the bituminous binder be added.
- Rubber, vinyl polymers and the like can be considered as elastomers. These materials are particularly suitable for sealing coverings, but do not fulfill the above-mentioned tasks of utilizing high amounts of rubber regeneration and having a sound-absorbing effect.
- DE-AS 1 418 977 discloses a process for producing a material consisting of mineral, polymer and bituminous components, in which the polymer components can be comminuted thermoplastic polymers of various origins. Since the polymers are thermoplastic, processing is relatively easy, but only 60-100% by weight of bitumen, based on the weight of the polymeric constituents, may be added to this mixture. Rubber rain rates cannot be processed here. Due to the relatively expensive starting materials, this process can only be used to a limited extent and for special purposes.
- the covering materials described in DE-AS 1 594 805 are based on two-component synthetic resins and a binder which does not consist of bitumen, but rather of tar or tar oil. Both tar and tar oil as well as Zweikom Component epoxy resins behave completely different from rubber powder and grater than bitumen on the one hand and thermoplastic polymers, in particular radial teleblock copolymers, on the other. This is evident, inter alia, from the fact that, according to DE-AS 1 594805, processing takes place practically at room temperature, while according to documents EP-A-1440 and EP-A-1754, work has to be carried out at temperatures around 200 ° C.
- Oxidized bitumen is not compatible with thermoplastic styrene-butadiene rubbers, so that only individual types of oxidized bitumen can be satisfactorily modified with the teleblock copolymers. While Delme recommends modifying bitumen with radial teleblock elastomers for various areas of application, e.g. bitumen felt panels, joint seals, noise insulation and underbody protection in the automotive industry, as well as pipelines and underground cables, he makes repeated attempts to modify bitumen for road construction with rubber additives , as disappointing. So far, the difficulties and increased costs of mixing bitumen with rubbers have not been justified by a corresponding quality improvement.
- a binder based on bitumen which contains 5-25% radial teleblock copolymers, which must be hot-homogenized with the bitumen, is suitable for absorbing 5-30% rubber regeneration in addition to mineral fillers and leads to coverings, in particular road coverings, which meet all quality requirements.
- these rubbers are suitable to aid source noise control by reducing the rolling noise and also less reflecting and swallowing the engine and driving wind noise.
- the present invention accordingly relates to a covering, in particular road surface, consisting of mineral fillers, rubber regeneration and a binder based on a hot-homogenized mixture of bitumen and radial teleblock copolymers, in a ratio of 95/5 to 75/25, characterized in that the Rubber regeneration content is 5 to 30%.
- the present invention relates to a process for producing pavement, in particular road pavement, characterized in that the bitumen and the radial teleblock copolymers are homogenized in a high-speed mixer within 0.3-2 hours at temperatures of 180-220 ° C. , then mixed with the rubber rain rates and preferably preheated minerals and then further processed in a manner known per se to form the topping.
- Copolymers of butadiene and styrene in a ratio of 75/25 to 60/40 with a molecular weight of 50,000-600,000 have proven particularly useful as radial teleblock copolymers.
- All distilled standard bitumen of classes B 25-B 200 are particularly suitable as bitumen. These bitumen qualities are compatible with the Radial-Telebock copolymers and can be homogenized at temperatures of 180-220 ° C, preferably 180-200 ° C, within 0.3-2 hours in a high-speed mixer.
- the rubber regenerates and mineral substances can be mixed into these polymer-modified binders in a customary manner, it having proven useful to preheat the minerals and to add the rubber regenerates at room temperature.
- the mixtures obtained in this way are processed further to the covering in a manner known per se.
- high-speed mixers are required, rotor-stator systems in particular having proven successful.
- the new coverings are particularly suitable as road surfaces, from which a high level of sound absorption is expected. Because of the good mechanical properties, they can also be used for bridge plates in all-steel construction (orthotropic plates), as described, for example, in DE-OS 2 304 004. Furthermore, these coverings can be used for schoolyards, aircraft runways, etc., since it has been found that the compatible components are bitumen and radial teleblock copolymers. Hot homogenized according to the invention is capable of absorbing and binding the most diverse types of mineral fillers and the most varied amounts of rubber regeneration. It therefore depends on the intended use which bitumen quality is modified with the radial teleblock copolymers and then with the desired amount of rubber regeneration rate and mine; mixed raw materials is processed into a covering.
- a great advantage of the method according to the invention is that the uneconomically long mixing times in the temperature range of 180-220 ° C are proportionate. can be kept short, namely 0.3-2 hours, preferably 0.8-1.5 hours. Longer mixing times are not only uneconomical, they also change the bitumen and the copolymer negatively. The bitumen hardens and the copolymers are negatively changed by chain breakage.
- the process according to the invention can be carried out either batchwise or continuously. By connecting several rotor-stator system mixers in series, the mixing time can be shortened further if desired. It is crucial that there is sufficient homogenization.
- 3 t of binders are produced from 90% bitumen B 200 or bitumen B 80 and 5% of the radial teleblock copolymers (Solpren 411 and Solpren 1205, butadiene-styrene ratio 75/25, molecular weight) 140,000).
- the mixing temperature was 190 and 200 °, respectively, the mixing time was 1 hour. Homogenization after 1 hour was complete in both cases.
- the other measured values for the softening point were 94 and 99 ° C, respectively.
- F max (N) was 1.25 and 3.657 and the permanent elongation after 24 hours was 18 and 10 mm.
- a device was installed on the feed line to the binder scales, which allowed the binder to be pumped directly into the weighing device.
- the elevator was prepared for the filling task in such a way that the rubber regeneration of the binder-mineral mixture could be added via a special weighing.
- the finished mixtures were partly poured into measuring plates measuring 50 x 50 x 4 cm and compacted using a vibrating roller on a wooden plate, and partly they were also used to install a surface covering a road surface of approx. 40 m in length and approx. 3.75 m in width applied with the help of a road finisher, these road surfaces were previously milled 4 cm deep.
- a VAT adhesive S was sprayed onto the milled surface in an amount of approx. 1 kg / m 2 and then the asphalt was applied with the paver (ABG-Titan 350 S).
- a cross profile measurement, a grip measurement with a pendulum device and comparative sound measurements were carried out on this surface. Installation errors on the surface could only be eliminated above a temperature of approx. 170 ° C because the elastic asphalt can no longer be processed here due to the high viscosity of the binder. Such bumps can be corrected by means of electrically heated steel plates.
- the cross profile measurement on the test pavement of a busy street shows that within 30 days at two different places the difference was no more than 0.1 to 0.3 mm.
- the grip measurement with the pendulum device was carried out according to "Work instructions for combined grip and roughness measurement with the pendulum device and the flow meter " , Research Association for Roads, 1972 edition. The results were considerably better than the values of a comparable asphalt concrete 0/8.
- Comparative sound measurements on the surface according to the invention compared to conventional surfaces showed that the surface according to the invention significantly reduces the frequencies above 800 Hz, not only by lower rolling noise at different speeds, but also by swallowing the sound from the other driving noises and Engine noise comes from.
- Asphalt mixtures with variable additions of "SBR-Latex” also showed no improvement in the abrasion values compared to other additives.
- Experiments with the adhesive “Coumaron-Indenharz” which according to the manufacturer has a high resistance to temperature and temperature changes, showed a relatively strong increase in the softening point (RuK). This addition also increases the splitting tensile strength of test specimens from asphalt mixtures, but only with very small additions of rubber regenerate. Elastic and rolling noise reducing and at the same time stable pavement ceilings can not be produced with this.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
- Paints Or Removers (AREA)
- Building Environments (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
Gegenstand der Erfindung ist ein neuer Belag, insbesondere Strassenbelag, der aus mineralischen Füllstoffen, Gummiregneraten sowie einem Bindemittel auf Basis von Bitumen besteht. Weiterhin betrifft die Erfindung ein Verfahren zur Herstellung dieses Belages sowie seine Verwendung zur Schalldämpfung, insbesondere von Fahrbahnen.The invention relates to a new surface, in particular road surface, which consists of mineral fillers, rubber sprinklers and a binder based on bitumen. Furthermore, the invention relates to a method for producing this covering and its use for sound absorption, in particular of roadways.
Im Rahmen der Bekämpfung von Umweitbefastungen spielt die Bekämpfung von Lärm, insbesondere von Verkehrslärm, eine erhebliche Rolle. Der Bau von Lärmschutzwänden und Lärmschutzwällen am Rande vielbefahrener Strassen in der Nähe von Wohnsiedlungen gehört zu diesen Massnahmen. Weniger aufwendig und sinnvoller wäre hingegen, bereits die Lärmentwicklung durch den Verkehr zu vermindern. Selbst wenn die Motor- und Fahrwindgeräusche von Kraftfahrzeugen erheblich gesenkt werden, verbleibt noch immer eine erhebliche Lärmbelästigung durch die Rotigeräusche.. Eine Aufgabe der vorliegenden Erfindung besteht somit darin, einen Belag für die Fahrbahnen zu entwickeln, welcher die Ausbildung der Rollgeräusche vermindert und die übrigen Fahrgeräusche wenig reflektiert und im erheblichen Masse schluckt. Es war zu erwarten, dass Fahrbahndecken aus elastischem Asphalt mit einem erheblichen Anteil an Elastomer-Stoffen geeignet sein könnten, die Lärmbekämpfung an der Quelle zu erreichen. Eine solche geräuschmindernde Deckschicht muss jedoch alle Anforderungen der Verkehrsbelastung und der sonstigen Bedingungen erfüllen.The fight against noise, especially traffic noise, plays an important role in the fight against long-distance pollutants. The construction of noise barriers and noise barriers on the edge of busy streets near residential areas is one of these measures. On the other hand, it would be less time-consuming and more sensible to reduce traffic noise. Even if the engine and driving wind noise of motor vehicles are significantly reduced, there is still a considerable noise pollution from the red noise. An object of the present invention is therefore to develop a road surface covering which reduces the formation of rolling noise and the rest Driving noise is little reflected and swallows to a considerable extent. It was to be expected that road surfaces made of elastic asphalt with a significant proportion of elastomeric substances could be suitable for achieving noise abatement at the source. However, such a noise-reducing cover layer must meet all requirements for traffic loads and other conditions.
Es ist bekannt, dass alte Gummireifen eine weitere Umweltbelastung sind. Ein Teil der alten Reigen wird daher zu körnigen oder fadenförmigen Regeneraten aufgearbeitet und teilweise erneut bei der Reifenherstellung verwendet. Es sind auch mehrfach Versuche beschrieben worden, derartige Gummiregenerate in Asphaltdecken miteinzumischen, jedoch ist es bisher in keinem Fall gelungen, grössere Mengen als 3-5% dieser Gummiregenerate in diese Beläge einzubauen, ohne dass die mechanischen Eigenschaften der Fahrbahndecken in unerträglicher Weise gelitten haben.It is known that old rubber tires are another environmental burden. Some of the old rounds are therefore processed into granular or thread-like regenerates and some are used again in the manufacture of tires. There have also been several attempts to mix such rubber rain in asphalt surfaces, but it has never been possible to incorporate larger amounts than 3-5% of these rubber rain in these surfaces without the mechanical properties of the road surface have suffered unbearably.
Eine weitere Aufgabe der vorliegenden Erfindung bestand somit darin, Gummiregenerate in einem höheren Prozentsatz als 5% in Fahrbahndecken einzubringen, ohne dass dadurch die Qualität dieser Fahrbahndecken leidet. Aus der DE-OS 2 119 178 ist bekannt, dem Füllmaterial und Bindemittel nach dem Erhitzen Gummivulkanisatteilchen zuzumischen, um infolge einer teilweisen thermischen Veränderung oder Zersetzung an den erhitzten Gesteinsteilchen zu haften. Bereits dieser Zusatz von insgesamt 3 Gew.-% faden- und pulverförmigem Gummivulkanisat führt aber zu verschlechterten Eigenschaften der Fahrbahndekken. Es wird zwar weiterhin behauptet, dass es sich als zweckmässig erwiesen habe, das fadenförmige Gummimaterial einer Vorbehandlung mit einem Stoff zum Steigern der Haftfähigkeit zu unterziehen. Es wird jedoch nicht angegeben, welche Stoffe hierfür geeignet sein könnten. Aus der DE-OS 2 146 902 ist bekannt, dem Bitumen bzw. Asphalt Polypropylen beizumischen, wodurch Hafteigenschaften, Zähigkeitseigenschaft und Bruchfestigkeit des Belages erhöht werden sollen. Der Anteil des Polypropylens soll 1-8, vorzugsweise 3-6 Gew.-% betragen. Die Vermischung des Polypropylens mit dem Bitumen ist ausserordentlich schwierig und erfordert daher eine aufwendige Spezialapparatur. Dieses Verfahren hat daher in der Praxis keine Bedeutung erlangt.A further object of the present invention was therefore to introduce rubber rain rates in a percentage higher than 5% in road surfaces, without the quality of these road surfaces thereby being impaired. From DE-OS 2 119 178 it is known to add rubber vulcanizate particles to the filler and binder after heating in order to adhere to the heated rock particles as a result of partial thermal change or decomposition. Already this addition of a total of 3% by weight of thread-like and powdered rubber vulcanizate leads to deteriorated properties of the pavement coverings. It is still claimed that it has proven expedient to pretreat the thread-like rubber material with a substance to increase the adhesiveness. However, it is not specified which substances could be suitable for this. From DE-OS 2 146 902 it is known to add polypropylene to the bitumen or asphalt, which is intended to increase the adhesive properties, toughness and breaking strength of the covering. The proportion of polypropylene should be 1-8, preferably 3-6% by weight. Mixing the polypropylene with the bitumen is extremely difficult and therefore requires complex special equipment. This method has therefore no meaning in practice.
Die DE-OS 2 253 495 beschreibt ein Verfahren zur Herstellung einer Belagschicht, bei dem auf den Unterbau ein Gemisch aus Splitt und bituminösem Bindemittel aufgebracht und dieses Traggerüst sodann durch in die Hohlräume eindringenden Mörtel verfestigt wird, in welchem dem bituminösen Bindemittel versteifende Füllstoffe oder Elastomere zugegeben werden. Als Elastomere kommen Kautschuk, Vinyl-Polymerisate und Ähnliches in Betracht. Diese Massen sind besonders für Dichtungsbeläge geeignet, erfüllen jedoch nicht die oben genannten Aufgaben, hohe Mengen Gummiregenerate zu verwerten und schalldämpfend zu wirken.DE-OS 2 253 495 describes a method for producing a covering layer in which a mixture of grit and bituminous binder is applied to the substructure and this supporting structure is then solidified by mortar penetrating into the cavities, in which fillers or elastomers stiffening the bituminous binder be added. Rubber, vinyl polymers and the like can be considered as elastomers. These materials are particularly suitable for sealing coverings, but do not fulfill the above-mentioned tasks of utilizing high amounts of rubber regeneration and having a sound-absorbing effect.
Aus der DE-AS 1 418 977 ist ein Verfahren zur Herstellung eines aus mineralischen, polymeren und bituminösen Bestandteilen bestehenden Materials bekannt geworden, bei dem die polymeren Bestandteile zerkleinerte thermoplastische Polymerisate verschiedenster Herkunft sein können. Da es sich um thermoplastische Polymerisate handelt, ist die Verarbeitung zwar relativ leicht, jedoch darf dieser Mischung nur noch 60-100 Gew.-% Bitumen, bezogen auf das Gewicht der polymeren Bestandteile, zugesetzt werden. Gummiregenerate können hierbei nicht verarbeitet werden. Aufgrund der relativ teuren Ausgangsmaterialien kann dieses Verfahren nur im begrenzten Umfang und für Sonderzwecke eingesetzt werden.DE-AS 1 418 977 discloses a process for producing a material consisting of mineral, polymer and bituminous components, in which the polymer components can be comminuted thermoplastic polymers of various origins. Since the polymers are thermoplastic, processing is relatively easy, but only 60-100% by weight of bitumen, based on the weight of the polymeric constituents, may be added to this mixture. Rubber rain rates cannot be processed here. Due to the relatively expensive starting materials, this process can only be used to a limited extent and for special purposes.
Aus EP-A-1440 und EP-A-1754 ist die Verwendung von Bindemitteln aus Asphalt und Radial-Teleblock-Copolymeren in Strassenbelägen bekannt. Es wird dort auch weiterhin beschrieben, dass das Bindemittel heiss-homogenisiert wird. Aus den Beispielen geht jedoch hervor, dass im allgemeinen 2 bis 4 Stunden lang bei 204°C gemischt werden musste, um eine optisch homogene Mischung zu erhalten. Die Versuche wurden mit relativ kleinen Mengen durchgeführt. Die Vormischungen wurden darüber hinaus 18 bis 24 Stunden bei 148 bis 163°C konditioniert, ehe sie weiterverarbeitet werden konnten. An keiner Stelle dieser Dokumente findet sich jedoch ein Hinweis darauf, dass derartige Strassenbeläge zusätzlich Gummiregenerate enthalten ·sollen, geschweige denn in wesentlich höheren Mengen als es bis dahin möglich und üblich war.From EP-A-1440 and EP-A-1754 the use of binders made of asphalt and radial teleblock copolymers in road surfaces is known. It is also described there that the binder is hot-homogenized. However, the examples show that in general it was necessary to mix at 204 ° C. for 2 to 4 hours in order to obtain an optically homogeneous mixture. The tests were carried out with relatively small amounts. The premixes were also conditioned at 148 to 163 ° C for 18 to 24 hours before they could be processed. At no point in these documents, however, is there any indication that such road coverings should additionally contain rubber rain rates, let alone in much higher quantities than was previously possible and customary.
Die in der DE-AS 1 594 805 beschriebenen Belagmassen sind auf Basis von Zweikomponenten-Kunstharzen und einem Bindemittel, welche nicht aus Bitumen, sondern aus Teer bzw. Teeröl besteht. Sowohl Teer und Teeröl als auch Zweikomponenten-Epoxydharze verhalten sich gegenüber Gummimehl und Gummiraspel völlig anders als Bitumen einerseits und thermoplastische Polymerisate, insbesondere Radial-Teleblock-Copolymere, andererseits. Dies geht u.a. daraus hervor, dass gemäss DE-AS 1 594805 die Verarbeitung praktisch bei Raumtemperatur stattfindet, während gemäss den Dokumenten EP-A-1440 und EP-A-1754 bei Temperaturen um 200°C gearbeitet werden muss.The covering materials described in DE-AS 1 594 805 are based on two-component synthetic resins and a binder which does not consist of bitumen, but rather of tar or tar oil. Both tar and tar oil as well as Zweikom Component epoxy resins behave completely different from rubber powder and grater than bitumen on the one hand and thermoplastic polymers, in particular radial teleblock copolymers, on the other. This is evident, inter alia, from the fact that, according to DE-AS 1 594805, processing takes place practically at room temperature, while according to documents EP-A-1440 and EP-A-1754, work has to be carried out at temperatures around 200 ° C.
R. Delme hat in einem Artikel in GAK 1977 - Seite 842 bis 847 die Modifizierung von Bitumen mit Radial-Teleblock-Elastomeren vorgeschlagen, wobei er jedoch darauf hinweist, dass nur einige Arten von Bitumen geeignet erscheinen. Er beschreibt weiterhin, dass im Laboratorium diese Teleblock-Copolymeren mit Hilfe eines Propellerrührers bei 180° innerhalb von drei bis fünf Stunden mit dem Bitumen vermischt werden konnten. Im grosstechnischen Massstab soll das Mischen in horizontal angeordneten Sigma-Mischern vorgenommen werden, wie sie bei der Bitumen-Verarbeitung üblich sind. Der Mischprozess sollte grundsätzlich bei 180°C durchgeführt werden, da bei höheren Temperaturen ein Abbau der Polymeren eintritt. Für kürzere Mischzyklen sind Mischaggregate mit hohen Scherkräften zu verwenden. Oxydiertes Bitumen ist mit thermoplastischen Styrol-Butadien-Kautschuken nicht verträglich, so dass sich nur einzelne oxydierte Bitumentypen befriedigend mit den Teleblock-Copolymeren modifizieren lassen. Während Delme die Modifizierung von Bitumen mit Radial-Teleblock-Elastomeren für verschiedene Anwendungsgebiete empfiehlt, beispielsweise Bitumen-Filzplatten, Fugendichtungen, Geräuschdämpfungen und Unterbodenschutz in der Automobilindustrie sowie Rohrleitungen und Untergrundkabel, stellt er die stets wiederholten Versuche, Bitumen für den Strassenbau durch Kautschukzusätze zu modifizieren, als enttäuschend hin. Bisher sind die Schwierigkeiten und erhöhten Kosten eines Vermischens von Bitumen mit Kautschuken nicht durch eine entsprechende Qualitätsverbesserung gerechtfertigt worden.In an article in GAK 1977 - pages 842 to 847, R. Delme proposed the modification of bitumen with radial teleblock elastomers, although he points out that only some types of bitumen appear suitable. He further describes that in the laboratory these teleblock copolymers could be mixed with the bitumen within three to five hours using a propeller stirrer at 180 °. On an industrial scale, mixing should be carried out in horizontally arranged sigma mixers, as is common in bitumen processing. The mixing process should always be carried out at 180 ° C, as the polymer degrades at higher temperatures. Mixing units with high shear forces should be used for shorter mixing cycles. Oxidized bitumen is not compatible with thermoplastic styrene-butadiene rubbers, so that only individual types of oxidized bitumen can be satisfactorily modified with the teleblock copolymers. While Delme recommends modifying bitumen with radial teleblock elastomers for various areas of application, e.g. bitumen felt panels, joint seals, noise insulation and underbody protection in the automotive industry, as well as pipelines and underground cables, he makes repeated attempts to modify bitumen for road construction with rubber additives , as disappointing. So far, the difficulties and increased costs of mixing bitumen with rubbers have not been justified by a corresponding quality improvement.
Es wurde jetzt überraschenderweise gefunden, dass ein Bindemittel auf Basis von Bitumen, welches 5-25% Radial-Teleblock-Copolymere enthält, wobei diese heiss mit dem Bitumen homoginisert sein müssen, geeignet ist, ausser mineralischen Füllstoffen auch 5-30% Gummiregenerate aufzunehmen und dabei zu Belägen, insbesondere Strassenbelägen führt, die allen Qualitätsanforderungen genügen. Zusätzlich wurde gefunden, dass diese Beläge geeignetsind, die Lärmbekämpfung an der Quelle zu unterstützen, indem die Rollgeräusche vermindert werden und auch weniger der Motor- und des Fahrwindgeräusches reflektiert und stattdessen geschluckt werden.It has now surprisingly been found that a binder based on bitumen, which contains 5-25% radial teleblock copolymers, which must be hot-homogenized with the bitumen, is suitable for absorbing 5-30% rubber regeneration in addition to mineral fillers and leads to coverings, in particular road coverings, which meet all quality requirements. In addition, it has been found that these rubbers are suitable to aid source noise control by reducing the rolling noise and also less reflecting and swallowing the engine and driving wind noise.
Die vorliegende Erfindung betrifft demgemäss einen Belag, insbesondere Strassenbelag, bestehend aus mineralischen Füllstoffen, Gummiregeneraten sowie einem Bindemittel auf Basis von einem heisshomogenisierten Gemisch aus Bitumen und Radial-Teleblock-Copolymeren, im Verhältnis 95/5 bis 75/25, dadurch gekennzeichnet, dass der Gehalt an Gummiregeneraten 5 bis 30% beträgt.The present invention accordingly relates to a covering, in particular road surface, consisting of mineral fillers, rubber regeneration and a binder based on a hot-homogenized mixture of bitumen and radial teleblock copolymers, in a ratio of 95/5 to 75/25, characterized in that the Rubber regeneration content is 5 to 30%.
Weiterhin betrifft die vorliegende Erfindung ein Verfahren zur Herstellung von Belag, insbesondere Strassenbelag, dadurch gekennzeichnet, dass man das Bitumen und die Radial-Teleblock-Copolymere bei Temperaturen von 180-220°C innerhalb von 0,3-2 Stunden in einem hochtourigen Mischer homogenisiert, danach mit den Gummiregeneraten und vorzugsweise vorgeheizten Mineralstoffen vermischt und danach in an sich bekannter Weise zum Belag weiterverarbeitet.Furthermore, the present invention relates to a process for producing pavement, in particular road pavement, characterized in that the bitumen and the radial teleblock copolymers are homogenized in a high-speed mixer within 0.3-2 hours at temperatures of 180-220 ° C. , then mixed with the rubber rain rates and preferably preheated minerals and then further processed in a manner known per se to form the topping.
Als Radial-Teleblock-Copolymere haben sich insbesondere Copolymerisate aus Butadien und Styrol im Verhältnis 75/25 bis 60/40 mit einem Molekulargewicht von 50.000-600.000 bewährt.Copolymers of butadiene and styrene in a ratio of 75/25 to 60/40 with a molecular weight of 50,000-600,000 have proven particularly useful as radial teleblock copolymers.
Als Bitumen kommen insbesondere alle destillierten Normenbitumen der Klassen B 25-B 200 in Frage. Diese Bitumenqualitäten sind mit den Radial-Telebock-Copolymeren verträglich und lassen sich bei Temperaturen von 180-220°C, vorzugsweise 180-200°C, innerhalb von 0,3-2 Stunden in einem hochtourigen Mischer-homogenisieren. In diese polymer-modifizierten Bindemittel kann man die Gummiregenerate und Mineraistoffe in üblicher Weise einmischen, wobei es sich bewährt hat, die Mineralstoffe vorzuheizen und die Gummiregenerate bei Raumtemperatur zuzufügen. Die so erhaltenen Gemische werden in an sich bekannter Weise zum Belag weiterverarbeitet. Um Bitumen und die Radial-Teleblock-Copolymere heiss homogenisieren zu können, sind hochtourige Mischer erforderlich, wobei sich insbesondere Rotor-Stator-Systeme bewährt haben.All distilled standard bitumen of classes B 25-B 200 are particularly suitable as bitumen. These bitumen qualities are compatible with the Radial-Telebock copolymers and can be homogenized at temperatures of 180-220 ° C, preferably 180-200 ° C, within 0.3-2 hours in a high-speed mixer. The rubber regenerates and mineral substances can be mixed into these polymer-modified binders in a customary manner, it having proven useful to preheat the minerals and to add the rubber regenerates at room temperature. The mixtures obtained in this way are processed further to the covering in a manner known per se. In order to be able to hot-homogenize bitumen and the radial teleblock copolymers, high-speed mixers are required, rotor-stator systems in particular having proven successful.
Aufgrund ihrer guten Eigenschaften eignen sich die neuen Beläge insbesondere als Strassenbeiäge, von denen eine hohe Schalldämpfung erwartet wird. Aufgrund der guten mechanischen Eigenschaften können sie aber auch für Brückenplatten in Ganzstahlbauweise (orthotrope Platten) verwendet werden, wie sie beispielsweise in der DE-OS 2 304 004 beschrieben sind. Weiterhin können diese Beläge für Schulhöfe, -Flugzeugrollbahnen - usw. eingesetzt werden, da sich herausgestellt hat, dass die verträglichen Komponenten Bitumen und Radial-Teleblock-Copolymere. erfindungsgemäss heiss homogenisiert die verschiedensten Arten von mineralischen Füllstoffen sowie die unterschiedlichsten Mengen Gummiregenerate aufzunehmen und zu binden vermögen. Es hängtsomit vom jeweiligen Verwendungszweck ab, welche Bitumenqualität' mit den Radial-Teleblock-Copolymeren modifiziert wird und dann mit der gewünschten Menge Gummiregenerate und Mine-; ralstoffen vermischt zu einem Belag verarbeitet wird.Due to their good properties, the new coverings are particularly suitable as road surfaces, from which a high level of sound absorption is expected. Because of the good mechanical properties, they can also be used for bridge plates in all-steel construction (orthotropic plates), as described, for example, in DE-OS 2 304 004. Furthermore, these coverings can be used for schoolyards, aircraft runways, etc., since it has been found that the compatible components are bitumen and radial teleblock copolymers. Hot homogenized according to the invention is capable of absorbing and binding the most diverse types of mineral fillers and the most varied amounts of rubber regeneration. It therefore depends on the intended use which bitumen quality is modified with the radial teleblock copolymers and then with the desired amount of rubber regeneration rate and mine; mixed raw materials is processed into a covering.
Ein grosser Vorteil des erfindungsgemässen Verfahrens besteht darin, dass die unwirtschaftlich langen Mischzeiten im Temperaturbereich von 180-220 °C verhältnism. kurz gehalten werden können, nämlich 0,3-2 Stunden, vorzugsweise 0,8-1,5 Stunden. Längere Mischzeiten sind nicht nur unwirtschaftlich, sondern verändern das Bitumen und das Copolymerisat negativ. Das Bitumen verhärtet und die Copolymeren werden durch Kettenbruch negativ verändert.A great advantage of the method according to the invention is that the uneconomically long mixing times in the temperature range of 180-220 ° C are proportionate. can be kept short, namely 0.3-2 hours, preferably 0.8-1.5 hours. Longer mixing times are not only uneconomical, they also change the bitumen and the copolymer negatively. The bitumen hardens and the copolymers are negatively changed by chain breakage.
Das erfindungsgemässe Verfahren kann sowohl chargenmässig als auch kontinuierlich durchgeführt werden. Durch Hintereinanderschaltung von mehreren Rotor-Stator-System-Mischern kann gewünschtenfalls die Mischzeit weiter verkürzt werden. Entscheidend ist, dass eine ausreichende Homogenisierung erfolgt.The process according to the invention can be carried out either batchwise or continuously. By connecting several rotor-stator system mixers in series, the mixing time can be shortened further if desired. It is crucial that there is sufficient homogenization.
In den nachfolgenden Beispielen ist die Erfindung näher erläutert. Aus den Vergleichsversuchen gehen die überraschend guten Eigenschaften der erfindungsgemässen Beläge, im Vergleich zu herkömmlichen Produkten und Produktionsverfahren, hervor.The invention is explained in more detail in the following examples. The surprisingly good properties of the coverings according to the invention, in comparison with conventional products and production processes, are evident from the comparative tests.
In einer Gerätekombination, bestehend aus einer üblichen Bitumen-Pumpe und einem Rotor-Stator-System Mischer, werden 3 t polymer-modifiziertes Bitumen hergestellt, indem man 2,55t t Bitumen B 200 und 0,45 t Radial-Teleblock-Copolymer (Butadien-Styrol-Verhältnis 70/30, Handelsbezeichnung Solprene 411, hergestellt von Phillips Petroleum Company, U.S.A., Molekulargewicht 300.000) bei 190°C 60 Minuten homogenisiert. Die Motorleistung betrug 7,5 kW bei 3.000 U/min. Eine Probe dieses Bindemittels wird untersucht und ergibt folgende Eigenschaften:
- a) In Anlehnung an die DIN-Norm 53 504 und ASTM D 412, Typ Die A, wird die Kraftaufnahme F max bei Dehnung bis 300% gemessen und ergibt 1,9 N. Die bleibende Dehnung nach 24 Stunden beträgt 12%.
- b) Nach DIN 1995 beträgt der Erweichungspunkt (RuK) 110°C und der Brechpunkt (Fraass) - 43 °C.
- c) Die Fliesslänge nach 24 Stunden bei 80°C beträgt 8 mm.
- a) In accordance with DIN standard 53 504 and ASTM D 412, type Die A, the force absorption F max is measured at an elongation of up to 300% and results in 1.9 N. The permanent elongation after 24 hours is 12%.
- b) According to DIN 1995, the softening point (RuK) is 110 ° C and the breaking point (Fraass) - 43 ° C.
- c) The flow length after 24 hours at 80 ° C is 8 mm.
In analoger Weise wie in Beispiel 1 beschrieben werden 3 t polymer-modifiziertes Bitumen hergestellt aus 2,7t Bitumen B 80 und 0,3 t Radial-Teleblock-Copolymer (Solpren 411). Die Mischtemperatur beträgt 200°, die Mischdauer 1 Stunde. Die geprüften Eigenschaften einer Probe ergaben Kraftaufnahme F max bei
- Dehnung bis 300% 3,67 N,
- bleibende Dehnung nach 24 Stunden 10%,
- Erweichungspunkt (RuK) 99°C,
- Brechpunkt (Frasss) -39°C,
- Fliesslänge nach 24 Stunden bei 80°C 11 mm.
- Elongation up to 300% 3.67 N,
- permanent elongation after 24 hours 10%,
- Softening point (RuK) 99 ° C,
- Breaking point (Frasss) -39 ° C,
- Flow length after 24 hours at 80 ° C 11 mm.
In analoger Weise wie im Beispiel 1 beschrieben wird ein polymer-modifiziertes Bindemittel hergestellt aus 90% Bitumen B 45 und 10% Radial-Teleblock-Copolymer (Solpren 411). Die Mischtemperatur während einer 1 Stunde beträgt 200°C. Die geprüften Eigenschaften sind. Kraftaufnahme F max bei Dehnung bis 300% 10,1 N,
- bleibende Dehnung nach 24 Stunden 12%,
- Erweichungspunkt (RuK) 98 °C,
- Brechpunkt (Fraass) -30°C,
- Fliesslänge nach 24 Stunden bei 80°C 6 mm.
- permanent elongation after 24 hours 12%,
- Softening point (RuK) 98 ° C,
- Breaking point (Fraass) -30 ° C,
- Flow length after 24 hours at 80 ° C 6 mm.
Mikroskopische Untersuchungen der endgültigen Proben mit solchen, die vorher oder nachher gezogen wurden, zeigten, dass bereits nach 30 Minuten eine weitgehende Homogenisierung stattgefunden hat, die im Laufe der nächsten ½ Stunde nur noch geringfügig zunimmt und dann praktisch konstant bleibt. Eine gute Homogenisierung erkennt man am Aufbau einer Netzstruktur, in der die Bitumenteile von den Copolymeren gleichmässig umschlossen sind. Diese im technischen Massstab hergestellten homogenisierten Bindemittel entsprechen durchaus den besten im Labormassstab herstellbaren homogenisierten Gemischen.Microscopic examination of the final samples with samples taken before or after showed that after 30 minutes extensive homogenization took place, which only increased slightly over the next ½ hour and then remained practically constant. Good homogenization can be recognized by the structure of a network structure in which the bitumen parts are evenly enclosed by the copolymers. These homogenized binders produced on an industrial scale correspond entirely to the best homogenized mixtures that can be produced on a laboratory scale.
In analoger Weise wie im Beispiel 3 beschrieben werden jeweils 3 t Bindemittel hergestellt aus 90% Bitumen B 200 bzw. Bitumen B 80 und jeweils 5% der Radial-Teleblock-Copolymeren (Solpren 411 und Solpren 1205, Butadien-Styrolverhältnis 75/25, Molekulargewicht 140 000). Die Mischtemperatur betrug 190 bzw. 200°, die Mischzeit jeweils 1 Stunde. Die Homogenisierung nach 1 Stunde war in beiden Fällen vollständig. Die übrigen Messwerte betrugen für den Erweichungspunkt 94 bzw. 99°C. Die Brechpunkte (Fraass) -35 bzw. -38°C. F max (N) betrug 1,25 bzw. 3,657 und die bleibende Dehnung nach 24 Stunden 18 bzw. 10mm.In a manner analogous to that described in Example 3, 3 t of binders are produced from 90% bitumen B 200 or bitumen B 80 and 5% of the radial teleblock copolymers (Solpren 411 and Solpren 1205, butadiene-styrene ratio 75/25, molecular weight) 140,000). The mixing temperature was 190 and 200 °, respectively, the mixing time was 1 hour. Homogenization after 1 hour was complete in both cases. The other measured values for the softening point were 94 and 99 ° C, respectively. The breaking points (Fraass) -35 or -38 ° C. F max (N) was 1.25 and 3.657 and the permanent elongation after 24 hours was 18 and 10 mm.
Aus diesen beiden Bindemitteln wurden folgende Rezepturen hergestellt:The following recipes were made from these two binders:
Diese Gemische wurden in einer Gross-Asphalt-Mischanlage bei ca. 200 °C gemischt, wobei die Bindemitteltemperatur 175°C-200°C, die Gesteinstemperatur 220°C-240°C, die Mischguttemperatur 180°C-200°C betrug, während das Gummiregenerat bei Lufttemperatur (ca. 18°) zugegeben wurde.These mixtures were mixed in a large asphalt mixing plant at approx. 200 ° C, the binder temperature being 175 ° C-200 ° C, the rock temperature 220 ° C-240 ° C, the mixture temperature 180 ° C-200 ° C, while the rubber regenerate was added at air temperature (about 18 °).
An der Zuleitung zur Bindemittelwaage war eine Vorrichtung installiert, die es erlaubte, das Bindemittel direkt in die Wägeeinrichtung zu pumpen. Ausserdem wurde der Elevator zur Füllaufgabe so hergerichtet, dass hierüber das Gummiregenerat der Bindemittel-Mineralmischung über eine besondere Verwiegung zugegeben werden konnte. Die fertigen Gemische wurden teils in Messplatten der Dimension 50 x 50 x 4 cm vergossen und unter Auflage einer Holzplatte mittels einer Rüttelwalze verdichtet, teilweise wurden sie auch zum Einbau eines Belages einer Strassenfläche von ca. 40 m Länge und ca. 3,75 m Breite mit Hilfe eines Strassenfertigers aufgetragen, wobei diese Strassenflächen zuvor 4 cm tief ausgefräst waren. Auf die ausgefräste Fläche wurde ein VAT-Haftkleber S in einer Menge von ca. 1 kg/m2 aufgespritzt und dann der Asphalt mit dem Fertiger (ABG-Titan 350 S) aufgetragen.A device was installed on the feed line to the binder scales, which allowed the binder to be pumped directly into the weighing device. In addition, the elevator was prepared for the filling task in such a way that the rubber regeneration of the binder-mineral mixture could be added via a special weighing. The finished mixtures were partly poured into measuring plates measuring 50 x 50 x 4 cm and compacted using a vibrating roller on a wooden plate, and partly they were also used to install a surface covering a road surface of approx. 40 m in length and approx. 3.75 m in width applied with the help of a road finisher, these road surfaces were previously milled 4 cm deep. A VAT adhesive S was sprayed onto the milled surface in an amount of approx. 1 kg / m 2 and then the asphalt was applied with the paver (ABG-Titan 350 S).
In analoger Weise wie im Beispiel 4 beschrieben wurde eine Mischung aus 20% polymer-modifiziertem Bindemittel (Bitumen B 80) mit 35 Gew.- % Edelsplitt 2/5 mm und 25 Gew.-% Edelsplitt 5/8 mm sowie 20 Gew.-% Gummiregenerat 5/8 mm vermischt. Die Bindemittel-Temperatur betrug 200°C, die Gesteinstemperatur 240°C, die Mischguttemperatur 190-200 °C und die Temperatur des Gummiregenerats (Lufttemperatur) ca. 25°C. Als Haftmittel zum Verkleben des Belages auf der Unterlage wurde ein Polyurethan-Haftkleber (Kleiberit@R 217.1) verwendet. Der Auftrag mit dem Fertiger erfolgte unter voller Vibration der Bohle. An diesem Belag wurden eine Querprofilmessung, eine Griffigkeitsmessung mit einem Pendelgerät sowie vergleichende Schallmessungen durchgeführt. Einbaufehler an der Oberfläche konnten nur oberhalb einer Temperatur von ca. 170°C beseitigt werden, weil der elastische Asphalt hier bereits bedingt durch die hohe Viskosität des Bindemittels nicht mehr verarbeitbar ist. Derartige Belagsunebenheiten können jedoch mittels elektrisch beheizter Stahlplatten korrigiert werden.In a manner analogous to that described in Example 4, a mixture of 20% polymer-modified binder (bitumen B 80) with 35% by weight of fine chippings 2/5 mm and 25% by weight of fine chippings 5/8 mm and 20% by weight % Rubber regeneration 5/8 mm mixed. The binder temperature was 200 ° C, the rock temperature 240 ° C, the mixed material temperature 190-200 ° C and the temperature of the rubber regenerate (air temperature) approx. 25 ° C. A polyurethane pressure-sensitive adhesive (Kleiberit @ R 217.1) was used as the adhesive for gluing the covering to the base. The job with the paver was done with full vibration of the screed. A cross profile measurement, a grip measurement with a pendulum device and comparative sound measurements were carried out on this surface. Installation errors on the surface could only be eliminated above a temperature of approx. 170 ° C because the elastic asphalt can no longer be processed here due to the high viscosity of the binder. Such bumps can be corrected by means of electrically heated steel plates.
Weitere Proben wurden mit anderen Haftmitteln auf Bitumenbasis, nämlich Fina@-Haftbrücken- emulsion, Tego°-Haftbrückenemulsion, Tego-Promak®-Haftkleber E und Tego-Promak®-Haftkleber F hergestellt. Die besten Ergebnisse wurden mit dem Polyurethan-Haftmittel Kleiberit R-Haftkleber 217.1 erzielt.Additional samples were made with other bitumen-based adhesives, namely Fina @ adhesive bridge emulsion, Tego ° adhesive bridge emulsion, Tego-Promak® pressure-sensitive adhesive E and Tego-Promak® pressure-sensitive adhesive F. The best results were achieved with the Kleiberit R pressure-sensitive adhesive 217.1 polyurethane adhesive.
Die Querprofilmessung an dem Versuchsbelag einer stark befahrenen Strasse zeigt, dass innerhalb von 30 Tagen an zwei verschiedenen Stellen die Differenz nicht mehr als 0,1 bis 0,3 mm betrug. Die Griffigkeitsmessung mit dem Pendelgerät erfolgte gemäss «Arbeitsanweisung für kombinierte Griffigkeits- und Rauhigkeitsmessung mit dem Pendelgerät und dem Ausflussmesser", Forschungsgesellschaft für Strassenwesen, Ausgabe 1972. Die Ergebnisse waren erheblich besser als die Werte eines vergleichbaren Asphaltbetons 0/8.The cross profile measurement on the test pavement of a busy street shows that within 30 days at two different places the difference was no more than 0.1 to 0.3 mm. The grip measurement with the pendulum device was carried out according to "Work instructions for combined grip and roughness measurement with the pendulum device and the flow meter " , Research Association for Roads, 1972 edition. The results were considerably better than the values of a comparable asphalt concrete 0/8.
Vergleichende Schallmessungen an dem erfindungsgemässen Belag im Vergleich zu herkömmlichen Belägen ergaben, dass der erfindungsgemässe Belag die Frequenzen oberhalb 800 Hz in erheblichem Masse mindert, und zwar nicht nur durch geringere Rollgeräusche bei verschiedenen Geschwindigkeiten, sondern auch durch Schlucken des Schalles der aus den sonstigen Fahrgeräuschen und Motorgeräuschen herrührt. Die Verminderung der Geräusche betrug in Abhängigkeit von der Geschwindigkeit (50-90 km/h) sowie dem Ein- und Ausschalten des Motors während der Messung ΔL = 1 bis 10 dB(A), insbesondere im hochfrequenten Bereich von 1000 bis 6000 Hz.Comparative sound measurements on the surface according to the invention compared to conventional surfaces showed that the surface according to the invention significantly reduces the frequencies above 800 Hz, not only by lower rolling noise at different speeds, but also by swallowing the sound from the other driving noises and Engine noise comes from. The reduction in noise was a function of the speed (50-90 km / h) and the switching on and off of the motor during the measurement ΔL = 1 to 10 dB (A), in particular in the high-frequency range from 1000 to 6000 H z .
Versuchsmischung mit Gummiregenerat und Normenbitumen. Eigene Versuche mit 3-5% Gummiregenerat-Anteilen in bituminösen Asphaltmischungen ergaben, dass hierdurch die durch Fahrzeuge hervorgerufenen Rollgeräusche praktisch nicht verändert werden. Höhere Prozentsätze an Gummiregenerat führten zu schlechter Verarbeitbarkeit und sehr schlechter Feststoffeinbindung. Dieses Ergebnis wurde bei verschiedenen Mengen, verschiedenen Temperaturen, verschiedenen Bitumenarten und verschiedenen Körnungen der mineralischen Zuschläge gefunden.Test mixture with rubber regeneration and standard bitumen. Our own tests with 3-5% rubber regeneration in bituminous asphalt mixtures showed that the rolling noise caused by vehicles is practically unchanged. Higher percentages of rubber regenerate led to poor processability and very poor solid incorporation. This result was found at different quantities, different temperatures, different bitumen types and different grain sizes of the mineral aggregates.
Versuchsmischung mit Gummiregenerat, Normenbitumen und Zusätzen verschiedener polymerer Stoffe.Test mixture with rubber regeneration, standard bitumen and additives of various polymeric substances.
Asphaltmischung und-Dazusetzen von «Pulvatex®» (Naturkautschuk) zum Normenbitumen ergaben ohne Gummiregenerat verbesserte mechanische Eigenschaften im Vergleich zu herkömmlichen Asphaltmischungen, jedoch führt dies nicht zur besseren Einbindung von Gummiregenerat. Entsprechende Versuche mit dem Zusatz von «Cariphalt®» (Bitumen-Kautschuk-Gemisch) zum Normenbitumen ergaben zwar ein verbessertes Rückstellverhalten, jedoch bedingte ein höherer Zusatz von Gummiregenerat eine erhebliche Verschlechterung des Abriebs und der Einbindung des Gummiregenerats.Mixing and adding asphalt from “Pulvatex®” (natural rubber) to the standard bitumen resulted in improved mechanical properties compared to conventional asphalt mixtures without a rubber regenerate, but this does not lead to better incorporation of rubber regenerate. Corresponding tests with the addition of “Cariphalt®” (bitumen-rubber mixture) to the standard bitumen gave an improved resilience behavior, but a higher addition of rubber regenerate caused a considerable deterioration of the abrasion and the integration of the rubber regenerate.
Entsprechende Versuche mit «Baypren®» (Synthese-Kautschuk) zum Normenbitumen führte ebenfalls zu Produkten mit stark verschlechtertem Abrieb.Corresponding tests with «Baypren®» (synthetic rubber) for standard bitumen also led to products with greatly deteriorated abrasion.
Asphaltmischungen unter variablen Zusätzen von «SBR-Latex" ergab ebenfalls keine Verbesserung der Abriebwerte gegenüber anderen Zusätzen. Versuche mit dem Haftmittel «Cumaron-Indenharz", das nach Angaben des Herstellers eine hohe Temperatur- und Temperaturwechselbeständigkeit aufweist, ergaben eine relativ starke Erhöhung des Erweichungspunktes (RuK). Dieser Zusatz erhöht auch die Spaltzugfestigkeit von Probekörpern aus Asphaltmischungen, jedoch nur bei sehr geringen Zusätzen von Gummiregenerat. Elastische und rollgeräuschmindernde und gleichzeitig standfeste Fahrbahndecken können somit hiermit nicht hergestellt werden.Asphalt mixtures with variable additions of "SBR-Latex" also showed no improvement in the abrasion values compared to other additives. Experiments with the adhesive "Coumaron-Indenharz " , which according to the manufacturer has a high resistance to temperature and temperature changes, showed a relatively strong increase in the softening point (RuK). This addition also increases the splitting tensile strength of test specimens from asphalt mixtures, but only with very small additions of rubber regenerate. Elastic and rolling noise reducing and at the same time stable pavement ceilings can not be produced with this.
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| AT81107813T ATE17758T1 (en) | 1980-10-03 | 1981-10-01 | RUBBER, PROCESS FOR ITS MANUFACTURE AND ITS USE. |
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|---|---|---|---|
| DE3037390 | 1980-10-03 | ||
| DE19803037390 DE3037390A1 (en) | 1980-10-03 | 1980-10-03 | COATING, METHOD FOR ITS PRODUCTION AND ITS PRODUCTION AND USE |
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| EP0049485A1 EP0049485A1 (en) | 1982-04-14 |
| EP0049485B1 true EP0049485B1 (en) | 1986-01-29 |
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| EP (1) | EP0049485B1 (en) |
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| GB9112035D0 (en) * | 1991-06-05 | 1991-07-24 | Causyn David W | Recycled rubber in a polymer modified asphalt & a method of making same |
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| FR2716216B1 (en) * | 1994-02-17 | 1996-05-03 | Colas Sa | Bituminous mix containing a composite material and process for obtaining such a mix. |
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| US5492561A (en) * | 1995-04-07 | 1996-02-20 | Neste/Wright Asphalt Products, Co. | Process for liquefying tire rubber and product thereof |
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| FR2753210B1 (en) * | 1996-09-12 | 1999-01-08 | Colas Sa | BITUMINOUS COATING CONTAINING POLYMERS AND POLYETHYLENE |
| SE522499C2 (en) * | 2001-10-05 | 2004-02-10 | Acoustic Control Ab | Process for manufacturing and laying a rolling noise-reducing road surface |
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| CH410031A (en) * | 1963-10-11 | 1966-03-31 | Grimm Otto | Covering for roadways and traffic routes |
| DE1470744A1 (en) * | 1963-10-15 | 1968-12-12 | Basf Ag | Bitumen-based masses |
| CH479773A (en) * | 1964-03-19 | 1969-10-15 | Pneu & Gummiverwertungs Ag | Process for the production of a bituminous paving compound |
| DE1594805C3 (en) * | 1965-09-09 | 1978-05-11 | Teerbau Gesellschaft Fuer Strassenbau Mbh, 4300 Essen | Use of a covering compound made of two-component synthetic resin, bituminous binder and cross-linked rubber for the production of coating layers with high resilience for traffic areas, screeds and industrial floors |
| AT307960B (en) * | 1970-04-21 | 1973-06-12 | Skega Ab | Method for producing a paving compound |
| FR2090938A5 (en) * | 1970-05-01 | 1972-01-14 | Shell Int Research | |
| LU79192A1 (en) * | 1977-04-04 | 1978-06-28 | Polytec Sprl | BITUMEN-BASED COMPOSITIONS |
| US4172061A (en) * | 1977-09-30 | 1979-10-23 | Phillips Petroleum Company | Asphaltic concrete compositions comprising hydrogenated diene/vinyl aromatic copolymers |
| US4217259A (en) * | 1977-09-30 | 1980-08-12 | Phillips Petroleum Company | Asphaltic concrete compositions comprising diene/vinyl aromatic copolymers |
| FR2436160A1 (en) * | 1978-09-13 | 1980-04-11 | Cib | BITUMINOUS COMPOSITION CONTAINING POLYMERS AND ITS APPLICATIONS |
| US4196115A (en) * | 1978-09-14 | 1980-04-01 | Phillips Petroleum Company | Blends of different conjugated diene/monovinyl aromatic copolymers in bituminous based roofing and waterproofing membranes |
-
1980
- 1980-10-03 DE DE19803037390 patent/DE3037390A1/en not_active Ceased
-
1981
- 1981-09-21 US US06/304,185 patent/US4381357A/en not_active Expired - Fee Related
- 1981-10-01 DE DE8181107813T patent/DE3173640D1/en not_active Expired
- 1981-10-01 AT AT81107813T patent/ATE17758T1/en not_active IP Right Cessation
- 1981-10-01 EP EP81107813A patent/EP0049485B1/en not_active Expired
- 1981-10-02 JP JP56156296A patent/JPS57102951A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57102951A (en) | 1982-06-26 |
| EP0049485A1 (en) | 1982-04-14 |
| DE3173640D1 (en) | 1986-03-13 |
| ATE17758T1 (en) | 1986-02-15 |
| DE3037390A1 (en) | 1982-05-13 |
| US4381357A (en) | 1983-04-26 |
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