DE2710149C3 - Process for the production of an aggregate for lightweight concrete - Google Patents
Process for the production of an aggregate for lightweight concreteInfo
- Publication number
- DE2710149C3 DE2710149C3 DE2710149A DE2710149A DE2710149C3 DE 2710149 C3 DE2710149 C3 DE 2710149C3 DE 2710149 A DE2710149 A DE 2710149A DE 2710149 A DE2710149 A DE 2710149A DE 2710149 C3 DE2710149 C3 DE 2710149C3
- Authority
- DE
- Germany
- Prior art keywords
- aggregate
- grain
- lightweight concrete
- production
- lightweight
- 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
Links
- 239000004567 concrete Substances 0.000 title claims description 23
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 5
- 239000000463 material Substances 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000004927 clay Substances 0.000 description 5
- 239000010454 slate Substances 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- 239000008262 pumice Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 239000011449 brick Substances 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000009435 building construction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 235000000836 Epigaea repens Nutrition 0.000 description 1
- 244000258539 Epigaea repens Species 0.000 description 1
- 239000010884 boiler slag Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- -1 silt mountains Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
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
- C04B18/12—Waste materials; Refuse from quarries, mining or the like
-
- 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
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
Die Erfindung betriffi ein Verfahren zur Herstellung eines Zuschlagstoffes für Leichtbeton. Der Zuschlagstoff besteht vorwiegend aus einem Überschußmaterial, das beim Herstellen gewaschener Kiese in Kieswerken anfällt. Der Leichtbeton kommt vorwiegend im allgemeinen Hochbau zur Anwendung. Leichtbeton hat im Hochbau konstruktive und wärmedämmende Aufgaben. The invention relates to a method of manufacture an aggregate for lightweight concrete. The aggregate consists mainly of an excess material, that occurs when producing washed gravel in gravel works. The lightweight concrete is mainly used in general building construction for use. Lightweight concrete has structural and thermal insulation tasks in building construction.
Ein Leichtbeton unterscheidet sich vom Normalbeton vorwiegend durch sein geringes Gewicht. Für einen derartigen Beton ist ein Betonzuschlagstoff erforderlich, der ein geringes Raumgewicht mit vergleichsweiser hoher Eigenfestigkeit aufweist.A lightweight concrete differs from normal concrete mainly in its low weight. For one Such concrete is a concrete aggregate required, which has a low density with comparatively has high inherent strength.
Unter Leichtzuschlag versteht man einen Zuschlag, dessen Kornrohdichte erheblich unter der des Normalzuschlages liegt. Leichtzuschlag wird sowohl für gefügedichten als auch für haufwerkporigen Leichtbeton (Betonrohdichte = 2,0 kg/dm3) verwendet. Die niedrige Kornrohdichte des Leichtzuschlagrs — meist unter 1,5 kg/dm3 — setzt bei anorganischem Leichtzuschlag eine hohe Korneigenporigkeit voraus, da die Reindichte aller dafür geeigneten Stoffe praktisch über 2,4 kg/dm3 liegt. Organischer Leichtzuschlag weist häufig bereits eine niedrige Reindichte im Bereich von 1,0 kg/dm3 auf; seine Kornrohdichte kann durch zusätzliche Korneigenporen auf unter 0,1 kg/dm3 gesenkt werden.A light aggregate is understood to mean an aggregate whose gross grain density is considerably below that of the normal aggregate. Lightweight aggregate is used for both structurally dense and pore-like lightweight concrete (concrete density = 2.0 kg / dm 3 ). The low grain density of the lightweight aggregate - mostly below 1.5 kg / dm 3 - requires inorganic light aggregate to have high grain pores, since the true density of all suitable materials is practically above 2.4 kg / dm 3 . Organic lightweight aggregate often already has a low pure density in the range of 1.0 kg / dm 3 ; its grain density can be reduced to below 0.1 kg / dm 3 by additional grain pores.
Die größte wirtschaftliche Bedeutung haben die anorganischen Leichtzuschläge. Hieraus lassen sich bei niedriger Kornrohdichte wärmedämmende Betone und Mörtel herstellen, die allerdings wegen der niedrigen Kornfestigkeit auch nur niedrige ode mäßige Festigkeiten aufweisen. Hochfeste Leichtbetone für tragende Bauteile bedingen eine hohe Kornfestigkeit, was zwangsläufig zu einer niedrigeren Korneigenporigkeit und damit höheren Kornrohdichten führt.Inorganic lightweight aggregates have the greatest economic importance. From this you can Lower grain density to produce heat-insulating concrete and mortar, however, because of the low Grain strength also have only low or moderate strengths. High-strength lightweight concrete for load-bearing Components require a high grain strength, which inevitably leads to lower grain pores and thus leads to higher grain densities.
Im wesentlichen finden die nachstehenden Leichtbeton-Zuschlagstoffe Verwendung:Basically the following lightweight concrete aggregates can be found Use:
Naturbims; ungebrochener, porenreicher, vulkanischer Auswurf mit verhältnismäßig geschlossener Oberfläche in einer für die Betonherstellung geeigneten Korngröße und -form. Nach Sedimentation verfestigter Bims (Tuff, in fein gemahlener |rorni als Traß bekannt) muß vor seiner Verwendung gehrochen und aufbereitet werden.Natural pumice; Unbroken, pore-rich, volcanic ejection with a relatively closed surface in a grain size and shape suitable for concrete production. After sedimentation solidified pumice (Tuff, in finely ground | r orni known as trass) are gehrochen before it is used and processed must.
Schaum'iava; gebrochene Lavaschlacke aus zusammenhängend
erstarrtem, porigem Eruptivgestein oder Lp.vakrotzen mit splittrig kantiger Kornform.
Hüttenbims (Schaumschlacke); gebrochene geschäumte Hochofenschlacke mit gedrungen kantiger Kornform.
Kesselschlacke; aufbereitete Rückstände vorwiegend von Steinkohlefeuerungen mit gedrungen kantiger
Kornform.
Sinterbims; gebrochene und ungebrochene SinterstoffeSchaum'iava; Broken lava slag from coherently solidified, porous igneous rock or Lp.vakrotzen with splintery angular grain shape.
Cottage pumice (foamed slag); Broken, foamed blast furnace slag with a squat, angular grain shape.
Boiler slag; processed residues mainly from hard coal firing with a squat, angular grain shape.
Sintered pumice; broken and unbroken sintered materials
ίο mit splittrig kantiger bzw. runder Kornform, meist auf
dem Sinterband, seltener im Schachtofen aus Flugasche, Waschbergen, Ton oder anderen Rohstoffen hergestellt.
Ziegelsplitt; aufbereiteter Ziegelbruch mit gedrungen kantiger Kornform, Ziegelsplitt wird heute vorwiegend
als Zuschlag für wärmebeanspruchten Leichtbeton (Schornsteinbauteile) verwendet
Blähton, Blähschiefer; geblähte Leichtzuschläge aus geeigneten und entsprechend aufbereiteten Tonen,
Schiefertonen und Tonschiefer, meist im ein- oder mehrteiligen Drehofen, seltener auf dem Sinterband
oder im Wirbelschachtofen durch schnelles Erhitzen auf 1000 bis 12000C hergestellt. Blähton und Blähschiefer
werden in der Regel ungebrochen (geschlossene Oberfläche), manchmal vornehmlich als Leichtzuschlag-ίο with splintery angular or round grain shape, mostly on the sintered belt, seldom made in a shaft furnace from fly ash, silt mountains, clay or other raw materials. Brick chippings; Recycled broken bricks with a squat, angular grain shape, brick chippings are mainly used today as an aggregate for heat-stressed lightweight concrete (chimney components)
Expanded clay, expanded slate; Expanded lightweight aggregates from suitable and appropriately processed clays, slate clays and clay slate, mostly produced in a one-part or multi-part rotary kiln, more rarely on the sintering belt or in a vortex shaft furnace by rapid heating to 1000 to 1200 ° C. Expanded clay and expanded slate are usually unbroken (closed surface), sometimes primarily as lightweight aggregates
.-5 sand auch gebrochen verwendet. Blähton besitzt
vorwiegend kugelige, zum Teil auch gedrungen abgerundete, Blähschiefer gedrungen kantige Kornform.
Der Erfindung liegt die Aufgabe zu Grunde, einen Leichtbetonzuschlag zu erhalten, der den technischen
Vorschriften entspricht und mit dem ein ungenutztes.-5 sand also used broken. Expanded clay has predominantly spherical, partially rounded, expanded slate, squat, angular grain shape.
The invention is based on the object of obtaining a lightweight concrete aggregate that complies with the technical regulations and with which an unused one
Überschußmaterial einer preisgünstigen Verwendung zugeführt werden kann.Excess material can be put to an inexpensive use.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß ein Zuschlagstoff für Leichtbeton vorwiegend aus
Schlämmsand zusammengesetzt ist, wobei dieser Schlämmsand als Überschußmaterial in jedem Kieswerk
anfällt.
Der Zuschlagstoff besteht aus Zement, Wasser, Schlämmsand und Luftporenbildner. Die Dosierung des
Luftporenbildners richtet sich nach der gewünschten Porigkeit des Zuschlagstoffes. Die Bestandteile werden
in einer geeigneten Mischanlage z. B. Betonmischanlage gemischt und in größere Formen gegossen. Nach dem
Erhärten und Ausschalen werden die Rohblöcke gebrochen, z. B. in einer Prallmühle. Es entsteht ein
Korngemisch, dessen Größtkorn von der Einstellung abhängig ist. Es kann das Korngemisch direkt oder nach
seiner Absiebung in Kornfraktionen als Zuschlagstoff für Leichtbeton verwendet werden.According to the invention, this object is achieved in that an aggregate for lightweight concrete is composed primarily of slurry sand, this slurry sand accumulating as excess material in every gravel plant.
The aggregate consists of cement, water, slurry sand and air entraining agents. The dosage of the air-entraining agent depends on the desired porosity of the aggregate. The ingredients are z. B. Concrete plant mixed and poured into larger molds. After hardening and stripping, the raw blocks are broken, e.g. B. in an impact mill. A grain mixture is created, the largest grain size of which depends on the setting. The grain mixture can be used directly or after it has been sieved into grain fractions as an aggregate for lightweight concrete.
Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß ein Leichtbetonzuschlagstoff hergestellt wird, dessen Rohstoff aus einem Überschußmaterial besteht. Der Rohstoff ist an vorhandene oder ehemalige Kieswerke gekoppelt, so daß sich eine verkehrsgünstige und damit wirtschaftliche Verteilung seines Vorkommens ergibt. Die erforderlichen Sieb-, Brech- und Mischanlagen sind Anlagen, die jeweils ein Vorkommen ausbeuten und anschließend umgesetzt werden können. Durch dieses Verfahren der Herstellung eines Leichtzuschlagstoffes soll der Leichtbeton wesentlich verbilligt werden, so daß seine Vorteile (geringes Gewicht, gute Wärmedämmung) entsprechend ihrer wirtschaftlichen Bedeutung genutzt werden.The advantages that can be achieved with the invention are in particular that a lightweight concrete aggregate is produced, the raw material of which consists of an excess material. The raw material is to be available or former gravel works coupled, so that a traffic-favorable and thus economical distribution of its occurrence. The required screening, crushing and mixing plants are plants that each have a Exploit deposits and can then be implemented. Through this method of manufacture a lightweight aggregate, the lightweight concrete should be significantly cheaper, so that its advantages (low weight, good thermal insulation) can be used according to their economic importance.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2710149A DE2710149C3 (en) | 1977-03-09 | 1977-03-09 | Process for the production of an aggregate for lightweight concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2710149A DE2710149C3 (en) | 1977-03-09 | 1977-03-09 | Process for the production of an aggregate for lightweight concrete |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2710149A1 DE2710149A1 (en) | 1978-09-14 |
| DE2710149B2 DE2710149B2 (en) | 1980-12-04 |
| DE2710149C3 true DE2710149C3 (en) | 1984-04-19 |
Family
ID=6003115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2710149A Expired DE2710149C3 (en) | 1977-03-09 | 1977-03-09 | Process for the production of an aggregate for lightweight concrete |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2710149C3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9725369B2 (en) * | 2014-08-13 | 2017-08-08 | Crispycrete, Llc | Method of processing unhardened concrete |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE120996C (en) * | ||||
| DE1059336B (en) * | 1955-12-29 | 1959-06-11 | Fettchemie | Process for the production of aerated concrete and porous molded bodies |
| DE2524147B2 (en) * | 1975-05-30 | 1978-10-12 | Ytong Ag, 8000 Muenchen | Process for the production of lightweight panels from a porous aggregate and plaster of paris |
-
1977
- 1977-03-09 DE DE2710149A patent/DE2710149C3/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2710149A1 (en) | 1978-09-14 |
| DE2710149B2 (en) | 1980-12-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OGA | New person/name/address of the applicant | ||
| OD | Request for examination | ||
| 8263 | Opposition against grant of a patent | ||
| 8280 | Miscellaneous part ii |
Free format text: DIE IN BETRACHT GEZOGENE DRUCKSCHRIFT "DE-PS 12O 996" LAUTET RICHTIG: "DD-PS 12O 996". |
|
| 8281 | Inventor (new situation) |
Free format text: HACKENBERG, WOLFGANG, 8972 SONTHOFEN, DE |
|
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |