DE4110944C2 - Process for the production of building blocks from tar-containing road construction material and their use - Google Patents

Process for the production of building blocks from tar-containing road construction material and their use

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Publication number
DE4110944C2
DE4110944C2 DE19914110944 DE4110944A DE4110944C2 DE 4110944 C2 DE4110944 C2 DE 4110944C2 DE 19914110944 DE19914110944 DE 19914110944 DE 4110944 A DE4110944 A DE 4110944A DE 4110944 C2 DE4110944 C2 DE 4110944C2
Authority
DE
Germany
Prior art keywords
tar
building blocks
granulate
production
construction material
Prior art date
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.)
Expired - Fee Related
Application number
DE19914110944
Other languages
German (de)
Other versions
DE4110944A1 (en
Inventor
Ralf Klausmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19914110944 priority Critical patent/DE4110944C2/en
Publication of DE4110944A1 publication Critical patent/DE4110944A1/en
Application granted granted Critical
Publication of DE4110944C2 publication Critical patent/DE4110944C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/16—Waste materials; Refuse from building or ceramic industry
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/18—Waste materials; Refuse organic
    • 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
    • E01C5/00—Pavings made of prefabricated single units
    • E01C5/22—Pavings made of prefabricated single units made of units composed of a mixture of materials covered by two or more of groups E01C5/008, E01C5/02 - E01C5/20 except embedded reinforcing materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Bausteinen aus teerhaltigem Straßenaufbruchmaterial und deren Verwendung.The invention relates to a method for producing Building blocks from tar-containing road construction material and their Use.

Teer wurde ebenso wie Bitumen in der Vergangenheit als bewährtes Bindemittel für Straßenbaustoffmaterialien ein­ gesetzt. Nach neuen wissenschaftlichen Untersuchungen und den daraus gewonnenen Erkenntnissen wird Teer heute jedoch als umweltschädlich eingestuft. Fallen im Zuge von Erneue­ rungs- oder Wartungsarbeiten teerhaltige Baustoffe an, dann stellt sich das Problem ihrer Wiederverwertung. Be­ kannt ist es, diese teerhaltigen Baustoffe zu einem Granu­ lat zu zerkleinern, das mit einem Bindemittel vermischt wird (DE 37 03 775 A1; DE 37 29 507 A1). Dadurch sollen die einzelnen Partikel des Granulates vollständig vom Bin­ demittel umschlossen werden, um zu verhindern, daß Schad­ stoffe aus dem Teer herausgelöst werden und eluieren. Für eine vollständige Umhüllung bzw. Einkapselung der Partikel des Granulates benötigt man allerdings verhältnismäßig große Mengen von Bindemitteln. Dennoch kann nicht ausge­ schlossen werden, daß durch Rißbildung der Umhüllung Schadstoffe aus dem Teer austreten können.Tar has been considered as bitumen in the past proven binder for road building materials set. After new scientific research and However, the knowledge gained from this will become tar today classified as environmentally harmful. Fall in the course of renewal repair or maintenance work on tar-containing building materials, then the problem of their recycling arises. Be It is known to make these tar-containing building materials into granules to crush lat, which is mixed with a binder (DE 37 03 775 A1; DE 37 29 507 A1). This is supposed to the individual particles of the granulate completely from the bin be enclosed to prevent damage substances are removed from the tar and elute. For a complete encapsulation or encapsulation of the particles of the granulate is however required proportionately large amounts of binders. Still can't go out be concluded that by cracking the wrapping Pollutants can escape from the tar.

Aufgabe der Erfindung ist es, den Einsatz von Bindemitteln bei der Wiederverwertung teerhaltiger Baustoffe zu verrin­ gern und gleichzeitig für eine zuverlässige Umhüllung der Partikel des Granulates zu sorgen.The object of the invention is the use of binders to reduce when recycling tar-containing building materials gladly and at the same time for a reliable wrapping of the To worry about particles of the granules.

Diese Aufgabe wird gelöst mit einem Verfahren zur Herstel­ lung von Bausteinen aus teerhaltigem Straßenaufbruchmate­ rial, bei dem das Straßenaufbruchmaterial soweit zu einem Granulat zerkleinert wird, daß die teerfreie Oberfläche des Granulats wenigstens 20% der Gesamtoberfläche beträgt, 100 Gewichtsteile des Granulats mit 50 Gewichtsteilen Zement PZ 45 und 3 Gewichtsteilen Wasser vermischt werden und das Gemisch zu Bausteinen geformt wird. Insbesondere können die Baustoffe soweit zerkleinert werden, daß die teerfreie Gesamtoberfläche des Granulats 25% beträgt. Die auf diese Weise hergestellten Bausteine können als Pflastersteine, Formsteine oder als Füllmaterial für den Erdbau und Wasserbau verwendet werden.This problem is solved with a manufacturing process development of building blocks from tar-containing road-breaking material rial, in which the road construction material becomes one  Granules are crushed that the tar-free surface the granulate is at least 20% of the total surface, 100 parts by weight of the granules with 50 parts by weight Cement PZ 45 and 3 parts by weight of water are mixed and the mixture is formed into building blocks. In particular the building materials can be crushed to the extent that the total tar-free surface of the granulate is 25%. The blocks produced in this way can be used as Paving stones, shaped stones or as filling material for the Earthworks and hydraulic engineering can be used.

Da der erfindungsgemäß verwendete Zement PZ 45 keine hin­ reichende Affinität zu teerigen Oberflächen besitzt, wird erreicht, daß der Zement sich auf wenigstens 20 bis 25% der Partikeloberfläche des Granulats fest an dieses an­ bindet und damit auch die Voraussetzungen bildet, daß eine vom Zement gebildete Partikelumhüllung selbst dann stabil und rißfrei bleibt, wenn die Umhüllung verhältnismäßig dünn ist. Im Ergebnis kann der Einsatz von Bindemitteln reduziert werden.Since the cement PZ 45 used according to the invention does not work has sufficient affinity for tarred surfaces achieved that the cement to at least 20 to 25% the particle surface of the granulate firmly on this binds and thus also creates the conditions that a Particle coating formed by the cement remains stable even then and remains crack-free if the wrapper is proportionate is thin. As a result, the use of binders be reduced.

Im folgenden wird ein Ausführungsbeispiel der Erfindung erläutert:
100 kg teerhaltige Baustoffe aus Straßenaufbruchmaterial werden in einer Prallmühle soweit zu einem Granulat zer­ kleinert, daß die teerfreie Oberfläche der Partikel des Granulats wenigstens 20 bis 25% der Gesamtoberfläche be­ trägt. Das Granulat wird mit ca. 50 kg Zement PZ 45 sowie ca. 3 kg Wasser und gegebenenfalls Aditiven gemischt. Aus dem Gemisch werden Bausteine geformt, die als Pflaster­ steine, Formsteine oder Füllmaterial für den Erdbau und Wasserbau eingesetzt werden können. An exemplary embodiment of the invention is explained below:
100 kg of tar-containing building materials from road construction material are reduced to a granulate in an impact mill to such an extent that the tar-free surface of the particles of the granulate carries at least 20 to 25% of the total surface area. The granulate is mixed with approx. 50 kg cement PZ 45 as well as approx. 3 kg water and possibly additives. Building blocks are formed from the mixture, which can be used as paving stones, shaped stones or filler material for earthworks and hydraulic engineering.

Der Wasseranteil ist mit ca. 3% deshalb so gering bemes­ sen, damit während des Trocknungsprozesses nur eine mini­ male Verdunstung auftritt. Im Frischbeton grundsätzlich, aber auch bei zu naß gefertigten Form- oder Füllsteinen besteht die Gefahr, daß die umweltkritischen Phenole aus­ geschwemmt werden können.The water content is therefore so small at approx. 3% so that only a mini male evaporation occurs. Basically in fresh concrete, but also for molded or filler stones that are too wet there is a risk that the environmentally critical phenols can be washed up.

Claims (3)

1. Verfahren zur Herstellung von Bausteinen aus teerhal­ tigem Straßenaufbruchmaterial, bei dem das Straßenauf­ bruchmaterial soweit zu einem Granulat zerkleinert wird, daß die teerfreie Oberfläche des Granulats wenigstens 20% der Gesamtoberfläche beträgt, 100 Gewichtsteile des Granu­ lats mit 50 Gewichtsteilen Zement PZ 45 und 3 Gewichtstei­ len Wasser vermischt werden und das Gemisch zu Bausteinen geformt wird.1. Process for the production of building blocks from teerhal road demolition material, in which the road as far as crushed material is crushed into granules, that the tar-free surface of the granulate is at least 20% the total surface is 100 parts by weight of the granu lats with 50 parts by weight of cement PZ 45 and 3 parts by weight len water are mixed and the mixture into building blocks is formed. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Baustoffe soweit zerkleinert werden, daß die teer­ freie Gesamtoberfläche des Granulats 25% beträgt.2. The method according to claim 1, characterized in that that the building materials are crushed to the extent that the tar total free surface of the granulate is 25%. 3. Verwendung der nach Anspruch 1 oder 2 hergestellten Bausteine als Pflastersteine, Formsteine oder Füllmaterial für den Erdbau und Wasserbau.3. Use of the produced according to claim 1 or 2 Building blocks as paving stones, shaped stones or filling material for earthworks and hydraulic engineering.
DE19914110944 1991-04-05 1991-04-05 Process for the production of building blocks from tar-containing road construction material and their use Expired - Fee Related DE4110944C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19914110944 DE4110944C2 (en) 1991-04-05 1991-04-05 Process for the production of building blocks from tar-containing road construction material and their use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19914110944 DE4110944C2 (en) 1991-04-05 1991-04-05 Process for the production of building blocks from tar-containing road construction material and their use

Publications (2)

Publication Number Publication Date
DE4110944A1 DE4110944A1 (en) 1992-10-08
DE4110944C2 true DE4110944C2 (en) 2000-07-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19914110944 Expired - Fee Related DE4110944C2 (en) 1991-04-05 1991-04-05 Process for the production of building blocks from tar-containing road construction material and their use

Country Status (1)

Country Link
DE (1) DE4110944C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4317451C2 (en) * 1993-05-26 1995-06-08 Wettern Geb Gmbh Von Der Concrete for pavements and methods of making the same
DE4407822C2 (en) * 1994-03-09 1997-01-23 Carl Ungewitter Trinidad Lake Process for the production of pourable and storage-stable granulate from natural asphalt
DE19744476B4 (en) * 1997-10-09 2004-12-09 Göpfert, Reinhard, Dipl.-Ing. Process for the production of composite-like surface fastening elements from asphalt material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703775A1 (en) * 1987-02-07 1988-08-25 Deutag Mischwerke Gmbh Process for environmentally sound recycling of broken-out asphalt
DE3729507A1 (en) * 1987-02-07 1989-03-23 Deutag Mischwerke Gmbh Process for the environmentally friendly recycling of broken-up asphalt

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703775A1 (en) * 1987-02-07 1988-08-25 Deutag Mischwerke Gmbh Process for environmentally sound recycling of broken-out asphalt
DE3729507A1 (en) * 1987-02-07 1989-03-23 Deutag Mischwerke Gmbh Process for the environmentally friendly recycling of broken-up asphalt

Also Published As

Publication number Publication date
DE4110944A1 (en) 1992-10-08

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D2 Grant after examination
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8339 Ceased/non-payment of the annual fee