AT414340B - FLOWABLE, SELF-COMPATIBLE KÜNETTEN FILLING MATERIAL - Google Patents

FLOWABLE, SELF-COMPATIBLE KÜNETTEN FILLING MATERIAL Download PDF

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Publication number
AT414340B
AT414340B AT0141002A AT14102002A AT414340B AT 414340 B AT414340 B AT 414340B AT 0141002 A AT0141002 A AT 0141002A AT 14102002 A AT14102002 A AT 14102002A AT 414340 B AT414340 B AT 414340B
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Austria
Prior art keywords
water
flowable
self
grain size
crushed
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AT0141002A
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German (de)
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ATA14102002A (en
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Pittel & Brausewetter Ges M B H
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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B30/00Compositions for artificial stone, not containing binders
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00663Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
    • C04B2111/00698Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like for cavity walls
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Ein fließfähiges, selbstverdichtendes Künettenfüllmaterial enthält zwischen 80 und 85 Masse% eines Gemisches aus Brechsand (Granit) und zerkleinertem Altbeton im Verhältnis zwischen 1:4 und 2:1, zwischen 1 und 8 Masse% Kalksteinmehl mit einer Korngröße von höchstens 0,125 mm und zwischen 9 und 15 Masse% Wasser, wobei ein Teil des Wassers Recyclingwasser aus einer Betonanlage ist, das (aufgeschlämmte) Feststoffe mit einer Korngröße von höchstens 0,125 mm enthält. Dieses vorzugsweise werksgemischte Künettenfüllmaterial ist fließfähig und härtet nicht unter Zunahme seiner Druckfestigkeit nach, weist also allenfalls (geringe) latent hydraulische Eigenschaften auf.A flowable, self-compacting Künettenfüllmaterial contains between 80 and 85% by weight of a mixture of crushed sand (granite) and crushed old concrete in the ratio between 1: 4 and 2: 1, between 1 and 8 mass% limestone flour with a grain size of at most 0.125 mm and between 9 and 15% by weight of water, with part of the water being recycled water from a concrete plant containing (slurried) solids having a grain size of at most 0.125 mm. This preferably factory-mixed Künettenfüllmaterial is flowable and does not harden with increasing its compressive strength, so at most (low) latent hydraulic properties.

Description

österreichisches Patentamt AT 414 340 B 2010-12-15Austrian Patent Office AT 414 340 B 2010-12-15

Beschreibung [0001] Die Erfindung betrifft ein fließfähiges, selbstverdichtendes Künettenfüllmaterial.Description [0001] The invention relates to a flowable, self-compacting Künettenfüllmaterial.

[0002] Beim Verlegen von Leitungen, z.B, für Strom, Wasser, Abwasser (Kanal), Gas und Fernwärme, werden Künetten gegraben, die nach dem Einbauen der Leitungen wieder verfällt werden. Derzeit sind natürliche Gesteinsmischungen als Füllmaterial üblich, die mit herkömmlichen Mitteln mechanisch verdichtet werden. Bekannt ist auch ein fließfähiges Haufwerk aus natürlichen Gesteinen, das als Künettenfüllmaterial eingesetzt wird.When laying cables, for example, for electricity, water, sewage (channel), gas and district heating, dowels are dug, which expire after installing the lines again. Currently, natural rock mixtures are common as filler, which are mechanically compacted by conventional means. Also known is a flowable heap of natural rocks, which is used as Künettenfüllmaterial.

[0003] Der Erfindung liegt die Aufgabe zugrunde, ein fließfähiges Künettenfüllmaterial zur Verfügung zu stellen, das selbstverdichtend ist, aber ein späteres einfaches Wiederaufgraben gewährleistet.The invention has for its object to provide a flowable Künettenfüllmaterial available, which is self-compacting, but ensures a later easy re-digging.

[0004] Gelöst wird diese Aufgabe mit einem fließfähigen, selbstverdichtenden Künettenfüllma-tenal, enthaltend zwischen 80 und 85 Masse% eines Gemisches aus Brechsand und zerkleinertem Altbeton, zwischen 1 und 8 Masse% Kalksteinmehl und zwischen 9 und 15 Masse% Wasser bezogen auf 100,00 Masse% (M%).This object is achieved with a flowable, self-compacting Künettenfüllma-tenal, containing between 80 and 85% by mass of a mixture of crushed sand and crushed old concrete, between 1 and 8% by mass of limestone and between 9 and 15% by mass of water based on 100, 00% by mass (M%).

[0005] Dieses vorzugsweise werksgemischte, erfindungsgemäße Künettenfüllmatenal ist fließfähig und härtet nicht unter Zunahme seiner Druckfestigkeit nach, weist also allenfalls (geringe) latent hydraulische Eigenschaften auf.This preferably factory-mixed, Künettenfüllmatenal according to the invention is free-flowing and does not harden with increasing its compressive strength, so at most (low) has latent hydraulic properties.

[0006] Bevorzugte Ausführungsformen der Erfindung sind Gegenstand der Unteransprüche.Preferred embodiments of the invention are the subject of the dependent claims.

[0007] Das vorzugsweise werksgemischte, erfindungsgemäße Künettenfüllmaterial kann so hergestellt werden, dass Altbeton in einer Prallmühle gebrochen wird, wobei Überkorn (über 35 mm) im Kreislauf geführt wird. Für ein grobes Künettenfüllmaterial wird dieses Korn verwendet, für feinere Künettenfüllmaterialien wird der gebrochene Altbeton bei 10 mm abgesiebt. Dieses Recyclingmaterial wird in einer Betonanlage (Betonmischer) mit dem Brechsand gemischt. Dann wird das Steinmehl, das Frischwasser und das Recyclingwasser zugesetzt und mindestens 15 Sekunden lang gemischt. Das so erhaltene Gemisch wird mit Fahrmischern zur Baustelle gebracht, wo bei Bedarf - bei besonders flüssigem Einbau - noch Wasser zugesetzt werden kann. BEISPIELE FÜR DAS ERFINDUNGSGEMÄßE KÜNETTENFÜLLMATERIAL: Beispiel 1: a) Brechsand (Granit) mit einer Korngröße 0/2 330 kg 15.71 M% b) Altbeton zerkleinert auf Korngröße 0/32 1430 kg 68.10 M% c) Wasser (300 kg) c1) Recyclingwasser aus Betonanlage 185 kg 7,86 M% c2) Feststoffe im Recyclingwasser mit einer Korngröße &lt;0,125 mm 60 kg 2,86 M% c3) Leitungswasser 75 kg 3,57 M% d) Kalksteinmehl mit einer Korngröße &lt;0,125 mm 40 kg 1.90 M% Summen 2100 kg 100,00 M% Beispiel 2: a) Brechsand (Granit) mit einer Korngröße 0/2 820 kg 41,41 M% b) Altbeton zerkleinert auf Korngröße 0/8 820 kg 41,41 M% c) Wasser (300 kg) c1) Recyclingwasser aus Betonanlage 165 kg 8,33 M% c2) Feststoffe im Recyclingwasser mit einer Korngröße &lt;0,125 mm 60 kg 3,03 M% c3) Leitungswasser 75 kg 3,80 M% d) Kalksteinmehl mit einer Korngröße &lt;0,125 mm 40 kg 2,02 M% Summen 1980 kg 100,00 M% 1/3 österreichisches Patentamt AT 414 340 B 2010-12-15The factory-mixed, preferably Künettenfüllmaterial invention can be prepared so that old concrete is crushed in an impact mill, with oversize (over 35 mm) is recycled. For a coarse chisel filling material, this grain is used. For finer chisel filling materials, the broken old concrete is sieved off at 10 mm. This recycling material is mixed in a concrete plant (concrete mixer) with the crushing sand. Then the stone meal, fresh water and recycled water are added and mixed for at least 15 seconds. The mixture thus obtained is brought to the construction site by means of truck mixers, where, if required, water can still be added in the case of particularly liquid installation. EXAMPLES OF THE COLUMN FILLING MATERIAL OF THE INVENTION Example 1: a) crushed sand (granite) having a grain size 0/2 330 kg 15.71 M% b) waste concrete crushed to grain size 0/32 1430 kg 68.10 M% c) water (300 kg) c1) recycled water concrete plant 185 kg 7.86 M% c2) solids in recycled water with a grain size <0.125 mm 60 kg 2.86 M% c3) tap water 75 kg 3.57 M% d) limestone flour with a grain size <0.125 mm 40 kg 1.90 M% sums 2100 kg 100.00 M% Example 2: a) crushed sand (granite) with a particle size 0/2 820 kg 41.41 M% b) used concrete crushed to particle size 0/8 820 kg 41.41 M% c ) Water (300 kg) c1) Concrete recycling water 165 kg 8,33 M% c2) Solids in recycled water with a particle size <0,125 mm 60 kg 3,03 M% c3) Tap water 75 kg 3,80 M% d) Limestone powder with a grain size <0.125 mm 40 kg 2.02 M% Sums 1980 kg 100.00 M% 1/3 Austrian Patent Office AT 414 340 B 2010-12-15

Beispiel 3: a) Brechsand (Granit) mit einer Korngröße 0/2 500 kg 25,0 M% b) Altbeton zerkleinert auf Korngröße 0/8 1150 kg 57,5 M% c) Wasser (310 kg) c1) Recyclingwasser aus Betonanlage 170 kg 8,5 M% c2) Feststoffe im Recyclingwasser mit einer Korngröße &lt;0,125 mm 60 kg 3,0 M% c3) Leitungswasser 80 kg 4,0 M% d) Kalksteinmehl mit einer Korngröße &lt;0,125 mm 40 kg 2,0 M%Example 3: a) crushed sand (granite) with a grain size 0/2 500 kg 25.0 M% b) old concrete crushed to particle size 0/8 1150 kg 57.5 M% c) water (310 kg) c1) recycled water from concrete plant 170 kg 8.5 M% c2) solids in recycled water with a grain size <0.125 mm 60 kg 3.0 M% c3) tap water 80 kg 4.0 M% d) limestone flour with a grain size <0.125 mm 40 kg 2, 0 M%

Summen_2000 kg 100,0 M% [0008] Das Verhältnis von zerkleinertem Altbeton zu natürlichem Brechsand kann betragen:Sum_2000 kg 100.0 M% The ratio of crushed old concrete to natural crushed sand can be:

Beispiel 4 5 6 natürlicher Brechsand 20-30 M% etwa 30 M% etwa 50 M% zerkleinerter Altbeton 70-80 M% etwa 70 M% etwa 50 M% 0009] Das Verhältnis von Recyclingwasser zu natürlichem Leitungswasser kann bei diesen Beispielen betragen: ___Example 4 5 6 natural crushed sand 20-30 M% about 30 M% about 50 M% crushed old concrete 70-80 M% about 70 M% about 50 M% 0009] The ratio of recycled water to natural tap water can be in these examples: ___

Beispiel 4 5 6 Recyclingwasser 75 M% 75 M% 75 M% Leitungswasser 25 M% 25 M% 25 M% [0010] Bevorzugte Sieblinienverläufe für die Beispiele 4 bis 6 werden wie folgt angegeben:Example 4 5 6 recycled water 75 M% 75 M% 75 M% tap water 25 M% 25 M% 25 M% Preferred grading curves for Examples 4 to 6 are indicated as follows:

Beispiel 4:Example 4:

Korngröße fmml 0,063 0,09 0,125 0,25 0,5 1 2 4 8 11,2 16 22.4 32 Untergrenze [M%1 10 15 20 25 35 45 55 65 70 75 82 90 100 Obergrenze [M%] 25 30 35 45 55 65 75 85 90 92 95 100 Beispiel 5: Korngröße [mm] 0,063 0,09 0,125 0,25 0,5 1 2 4 8 11,2 16 22,4 32 Untergrenze [M%1 10 12 15 17 25 35 50 65 80 100 Obergrenze [M%1 30 35 40 50 60 70 80 95 100 Beispiel 6: Korngröße [mml 0,063 0,09 0,125 0,25 0,5 1 2 4 8 11,2 16 22,4 32 Untergrenze [M%1 10 12 15 20 27 40 55 65 100 Obergrenze [M%1 30 35 40 50 60 75 85 100 [0011] Ein bevorzugtes Ausführungsbeispiel der Erfindung kann wie folgt zusammengefasst werden: [0012] Ein fließfähiges, selbstverdichtendes Künettenfüllmaterial enthält zwischen 80 und 85 Masse% eines Gemisches aus Brechsand (Granit) und zerkleinertem Altbeton im Verhältnis zwischen 1:4 und 2:1, zwischen 1 und 8 Masse% Kalksteinmehl mit einer Korngröße von höchstens 0,125 mm und zwischen 9 und 15 Masse% Wasser, wobei ein Teil des Wassers 2/3Grain size fmml 0.063 0.09 0.125 0.25 0.5 1 2 4 8 11.2 16 22.4 32 Lower limit [M% 1 10 15 20 25 35 45 55 65 70 75 82 90 100 Upper limit [M%] 25 30 35 45 Example 5: Grain size [mm] 0.063 0.09 0.125 0.25 0.5 1 2 4 8 11.2 16 22.4 32 Lower limit [M% 1 10 12 15 17 25 35 50 65 80 100 upper limit [M% 1 30 35 40 50 60 70 80 95 100 Example 6: Grain size [mml 0.063 0.09 0.125 0.25 0.5 1 2 4 8 11.2 16 22.4 32 Lower limit [M% [0011] A preferred embodiment of the invention may be summarized as follows: A flowable, self-compacting Künettenfüllmaterial contains between 80 and 85 Mass% of a mixture of crushed sand (granite) and crushed old concrete in the ratio between 1: 4 and 2: 1, between 1 and 8% by weight of limestone powder with a particle size of not more than 0,125 mm and between 9 and 15% by weight of water, part of the Water 2/3

AT0141002A 2002-09-19 2002-09-19 FLOWABLE, SELF-COMPATIBLE KÜNETTEN FILLING MATERIAL AT414340B (en)

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AT0141002A AT414340B (en) 2002-09-19 2002-09-19 FLOWABLE, SELF-COMPATIBLE KÜNETTEN FILLING MATERIAL

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AT0141002A AT414340B (en) 2002-09-19 2002-09-19 FLOWABLE, SELF-COMPATIBLE KÜNETTEN FILLING MATERIAL

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT521538A1 (en) * 2018-07-25 2020-02-15 Rohrdorfer Transp Gmbh Künetten filling material and process for its reprocessing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE374163T1 (en) * 2001-07-13 2007-10-15 Chevron Usa Inc ZEOLITE SSZ-60

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE374163T1 (en) * 2001-07-13 2007-10-15 Chevron Usa Inc ZEOLITE SSZ-60

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT521538A1 (en) * 2018-07-25 2020-02-15 Rohrdorfer Transp Gmbh Künetten filling material and process for its reprocessing
AT521538B1 (en) * 2018-07-25 2020-04-15 Rohrdorfer Transp Gmbh Künetten filling material and process for its reprocessing

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