CH473740A - Aggregate material for concrete and other pourable masses and methods for producing the aggregate material - Google Patents

Aggregate material for concrete and other pourable masses and methods for producing the aggregate material

Info

Publication number
CH473740A
CH473740A CH960166A CH960166A CH473740A CH 473740 A CH473740 A CH 473740A CH 960166 A CH960166 A CH 960166A CH 960166 A CH960166 A CH 960166A CH 473740 A CH473740 A CH 473740A
Authority
CH
Switzerland
Prior art keywords
aggregate material
binder
grains
material according
concrete
Prior art date
Application number
CH960166A
Other languages
German (de)
Inventor
Heller Rudolf
Original Assignee
Contraves Ag
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 Contraves Ag filed Critical Contraves Ag
Priority to CH960166A priority Critical patent/CH473740A/en
Priority to CH1522666A priority patent/CH483374A/en
Priority to DE19671704531 priority patent/DE1704531B2/en
Priority to GB12529/67A priority patent/GB1118277A/en
Priority to US623882A priority patent/US3640787A/en
Priority to DE1778653A priority patent/DE1778653C3/en
Priority to GB25208/68A priority patent/GB1174374A/en
Priority to US3598672D priority patent/US3598672A/en
Publication of CH473740A publication Critical patent/CH473740A/en
Priority to US3723232D priority patent/US3723232A/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
    • B29C67/207—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored comprising impregnating expanded particles or fragments with a binder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10—Coating or impregnating
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10—Coating or impregnating
    • C04B20/12—Multiple coating or impregnating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/22—After-treatment of expandable particles; Forming foamed products
    • C08J9/228—Forming foamed products
    • C08J9/236—Forming foamed products using binding agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
    • B29K2309/08—Glass

Description

  

  



  Zuschlagsmaterial für Beton und andere vergiessbare Massen sowie Verfahren zum Herstellen des Zuschlagmaterials
Es sind mancherlei Zuschlagsmaterialien für Beton u. andere vergiessbare Massen zur Herabsetzung des spezifischen Gewichtes und des Wärmeleitvermögens, eventuell auch zur Festigkeitsverbesserung oder zur Verbilligung des Endproduktes bekannt. Ausser Holzspänen oder anderem Fasermaterial werden zu diesem Zwecke z.B. auch geblähte,   runde    und poröse Tonkörner verwendet. Ihr spezifisches Gewicht liegt immerhin noch bei Werten von zirka 0,9 -   1,5,    ausserdem saugen sie sich wie ein Schwamm mit Wasser voll.

   So dauert es oft sehr lange, bis Gebäudemauern aus Beton mit solchem Zusatzmaterial trocken sind, und im feuchten Zustand ist ihre Wärmekapazität und Wärmeleitfähigkeit ebenso hoch wie bei Beton ohne solche Zusatzkörper.



   Gemäss vorliegender Erfindung ist ein Zuschlagmaterial für Beton und andere vergiessbare Massen, z.B.



  Gipsbrei oder auch selbstschäumende Massen, wie z.B.



  Poly-Urethan, dadurch gekennzeichnet, dass es aus losen, rundlichen Schaumstoffkörnern, z.B. geblähten Polystyrolkörnern besteht, z.B. geblähten Polystyrolkörnern, die je eine erhärtete Bindemittelschale, z.B. einem Kunstharz auf Epoxyharzbasis, mit darin eingebettetem, und/oder aussen daran klebendem Feststoffpulver, vorzugsweise Quarzmehl, Gipsmehl oder anderes Mineralpulver aufweisen.



   Ein erfindungsgemässes Verfahren zum Herstellen des erfindungsgemässen Zuschlagmaterials ist erfindungsgemäss dadurch gekennzeichnet, dass rundliche Schaumstoffkörner mit flüssigem, aushärtbarem Bindemittel bis zur vollständigen Oberflächenbenetzung und anschliessend mit Feststoffpulver bis zur vollständigen Umhüllung der Bindemittelschicht vermischt werden und dann die Bindemittelschichten ausgehärtet werden. Beim Vermischen von geblähten Polystyrolkörnern mit flüssigem Bindemittel entsteht vorerst eine breiartig klebrige Masse, die sich aber beim nachfolgenden Zumischen des Feststoffpulvers wieder in eine extrem leicht bewegliche Masse von trockenen Einzelkugeln verwandelt, deren Hüllschichten am besten dadurch ausgehärtet werden, dass die Kornermasse einem Warmluftstrom ausgesetzt werden.



   Das erfindungsgemäss Herstellungsverfahren für das Zuschlagmaterial ist in der Zeichnung beispielsweise veranschaulicht. Es zeigen:
Fig. 1 Ein Beispiel für die Ausführung des ersten Verfahrensschrittes, nämlich die Benetzung von geblähten Polystyrolkörnern mit härtbarer Epoxyharz-Flüssigkeit.



   Fig. 2 Ein Beispiel für die Ausführung der zweiten Verfahrensstufe, nämlich die Umhüllung der vom Bindemittel benetzten Polystyrolkörpern mit pulverigem Feststoff.



   Gemäss Fig. 1 werden in einen mit einem Rührwerk versehenen Mischbehälter 1 aus einem Gefäss 2 geblähte Polystyrolkörper 10 von rundlicher Form und einem Litergewicht von zirka 5-10 g eingebracht. Ihr Durchmesser wird im Mittel   3-6 mm    betragen. Auf zirka 10-151 solcher Polystyrolkörner werden aus einem Gefäss 3 eine Menge von zirka 250-300g Epoxyharz-Flüssigkeit, z.B.



  Araldit (geschützter Name) mit vorgeschriebenem Härterzusatz zugemischt und das Ganze innig vermischt, bis alle Polystyrolkörper gleichmässig mit einer Bindemittelschicht 30 benetzt sind. Es werden je nach der Menge der zugesetzten Bindemittelflüssigkeit und je nach deren Zähigkeit dünnere oder dickere Bindemittelschichten auf den Polystyrolkörpern erzeugt. Im Mittel soll diese Bindemittel-Schichtdicke zirka   0,08-0,25 mm    betragen.



  Gemäss Fig. 2 wird anschliessend aus einem Sack 4 in den Mischbehälter 1 eine Menge von feinkörnigem Quarzsand 40, ev. auch von anderem Mineralsand oder auch Metallpulver, z.B. Aluminiumpulver einer Korngrösse von   0,05-0,25    mm, d.h. etwa gleich der Dicke der Bindemittelschicht 30 beigemischt, welche ausreicht, um die mit flüssigem Bindemittel benetzten Polystyrolkörner 10 vollständig mit einer äusserlich trockenen, feinkörnigen Sandschicht 40 zu umhüllen, deren Körner einzeln im Bindemittel 30 kleben. Die Vermischung kann in einem Greifer oder Trommelmischer, beispielsweise auch in hintereinander angeordneten Behältern für die einzelnen Verfahrensschritte erfolgen. Es ergibt sich am Ende des beschriebenen Prozesses ein trockenes, leicht bewegliches  Kornmaterial mit einem Litergewicht von zirka 0,1  0,15kg.   



   Vorzugsweise wird dieses Material nun einem Warmluftstrom ausgesetzt, um die Aushärtung des Bindemittels zu beschleunigen. Vorzugsweise wird ein solcher Warmluftstrom von unten her in einen, solches Kornmaterial enthaltenden Behälter eingeblasen, um gleichzeitig die Körper in einem quasi schwimmenden und leicht beweglichen Zustand zu halten, damit sie nicht miteinander verkleben. Es wird dann ein kugeliges Material mit dünner, aber ziemlich stabiler Schale gewonnen, das sich mit grossem Vorteil als Zuschlagmaterial für vergiessbare und aushärtbare Materialien wie Zement-Betonmischung oder auch für Schaumstoffmaterialien, wie z.B. Hart Polyurethan verwenden lässt.



  



  Aggregate material for concrete and other pourable masses and methods for producing the aggregate material
There are various aggregate materials for concrete u. other castable compounds are known to reduce the specific weight and the thermal conductivity, possibly also to improve strength or to make the end product cheaper. In addition to wood chips or other fiber material, e.g. expanded, round and porous clay grains are also used. Their specific weight is still around 0.9 - 1.5, and they soak up water like a sponge.

   It often takes a very long time for building walls made of concrete with such additional material to be dry, and in the wet state their heat capacity and thermal conductivity are just as high as with concrete without such additional bodies.



   According to the present invention, an aggregate material for concrete and other pourable compounds, e.g.



  Plaster of paris or self-foaming masses, e.g.



  Poly-urethane, characterized in that it consists of loose, rounded foam grains, e.g. expanded polystyrene grains, e.g. expanded polystyrene grains, each having a hardened binder shell, e.g. a synthetic resin based on epoxy resin with solid powder embedded therein and / or adhering to the outside, preferably quartz powder, gypsum powder or other mineral powder.



   A method according to the invention for producing the aggregate material according to the invention is characterized according to the invention in that round foam grains are mixed with liquid, curable binding agent until the surface is completely wetted and then with solid powder until the binding agent layer is completely enveloped, and then the binding agent layers are cured. When expanded polystyrene grains are mixed with a liquid binder, a pasty, sticky mass is initially formed, which, however, when the solid powder is subsequently mixed in, turns back into an extremely easy-moving mass of dry individual spheres, the shell layers of which are best hardened by exposing the grain mass to a stream of warm air .



   The manufacturing method according to the invention for the aggregate material is illustrated in the drawing, for example. Show it:
Fig. 1 An example of the implementation of the first process step, namely the wetting of expanded polystyrene grains with curable epoxy resin liquid.



   Fig. 2 An example of the execution of the second process stage, namely the sheathing of the polystyrene bodies wetted by the binder with powdery solid.



   According to FIG. 1, expanded polystyrene bodies 10 of round shape and a liter weight of approximately 5-10 g are introduced into a mixing container 1 provided with a stirrer from a vessel 2. Their diameter will be 3-6 mm on average. About 10-151 such polystyrene grains are poured from a vessel 3 an amount of about 250-300 g epoxy resin liquid, e.g.



  Araldit (protected name) mixed in with the prescribed hardener additive and the whole thing intimately mixed until all the polystyrene bodies are evenly wetted with a binder layer 30. Depending on the amount of binder liquid added and depending on its viscosity, thinner or thicker layers of binder are produced on the polystyrene bodies. On average, this binder layer thickness should be approximately 0.08-0.25 mm.



  According to Fig. 2 a quantity of fine-grained quartz sand 40, possibly also of other mineral sand or metal powder, e.g. Aluminum powder with a grain size of 0.05-0.25 mm, i.e. approximately equal to the thickness of the binder layer 30, which is sufficient to completely envelop the polystyrene grains 10 wetted with liquid binder with an externally dry, fine-grained sand layer 40, the grains of which stick individually in the binder 30. The mixing can take place in a gripper or drum mixer, for example also in containers arranged one behind the other for the individual process steps. At the end of the process described, the result is a dry, easily mobile grain material with a liter weight of around 0.1 0.15 kg.



   This material is then preferably exposed to a stream of hot air in order to accelerate the hardening of the binder. Such a hot air stream is preferably blown from below into a container containing such granular material in order to simultaneously keep the bodies in a quasi-floating and easily movable state so that they do not stick to one another. A spherical material with a thin, but fairly stable shell is then obtained, which can be used with great advantage as an aggregate for pourable and curable materials such as cement-concrete mix or for foam materials, such as e.g. Hard to use polyurethane.

Claims (1)

PATENTANSPRÜCHE I. Zuschlagmaterial für Beton und andere vergiessbare Massen, dadurch gekennzeichnet, dass es aus losen, rundlichen Schaumstoffkörnern besteht, die je eine erhärtete Bindemittelschale mit darin eingebettetem und/oder aussen daran klebendem Feststoffpulver aufweisen. PATENT CLAIMS I. Aggregate material for concrete and other castable masses, characterized in that it consists of loose, rounded foam grains each having a hardened binder shell with solid powder embedded therein and / or adhering to the outside. II. Verfahren zum Herstellen des Zuschlagmaterials nach Patentanspruch 1, dadurch gekennzeichnet, dass rundliche Schaumstoffkörner mit flüssigem, aushärtbarem Bindemittel bis zur vollständigen Oberflächenbenetzung und anschliessend mit Feststoffpulver bis zur vollständigen Umhüllung der Bindemittelschicht vermischt werden und dann die Bindemittelschichten ausgehärtet werden. II. A method for producing the aggregate material according to claim 1, characterized in that round foam grains are mixed with liquid, curable binder until the surface is completely wetted and then with solid powder until the binder layer is completely covered, and then the binder layers are cured. UNTERANSPRÜCHE 1. Zuschlagmaterial nach Patentanspruch I, dadurch gekennzeichnet, dass rundkörniges, geblähtes Polystyrol die Schaumstoffkörner bilden. SUBCLAIMS 1. aggregate material according to claim I, characterized in that round-grained, expanded polystyrene form the foam grains. 2. Zuschlagmaterial nach Patentanspruch I, dadurch gekennzeichnet, dass erhärtetes Epoxyharz und darin eingebettetes und/oder daran angelagertes Mineralmehl, die Schaumstoffkörnemmhüllungen bilden. 2. aggregate material according to claim I, characterized in that hardened epoxy resin and mineral powder embedded therein and / or attached to it, which form foam granule envelopes. 3. Zuschlagmaterial nach den Unteransprüchen 1 und 2, dadurch gekennzeichnet, dass dessen Korngrösse 2-8 mm beträgt und das Litergewicht des Materials weniger als 0,2 kg beträgt. 3. aggregate material according to the dependent claims 1 and 2, characterized in that its grain size is 2-8 mm and the liter weight of the material is less than 0.2 kg. 4. Verfahren nach Patentanspruch II, dadurch gekennzeichnet, dass die Aushärtung des Bindemittels dadurch begünstigt wird, dass die lose Masse der benetzten und mit Feststoffpulver umhüllten Schaumstoffkörner einem Warmluftstrom ausgesetzt wird. 4. The method according to claim II, characterized in that the curing of the binder is promoted in that the loose mass of the wetted and coated with solid powder foam grains is exposed to a stream of hot air.
CH960166A 1966-03-23 1966-07-01 Aggregate material for concrete and other pourable masses and methods for producing the aggregate material CH473740A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
CH960166A CH473740A (en) 1966-07-01 1966-07-01 Aggregate material for concrete and other pourable masses and methods for producing the aggregate material
CH1522666A CH483374A (en) 1966-07-01 1966-10-20 Bulk material for filling cavities and processes for their manufacture
DE19671704531 DE1704531B2 (en) 1966-03-23 1967-03-16 METHOD FOR MANUFACTURING SPECIFIC LIGHT PLASTIC BODIES
GB12529/67A GB1118277A (en) 1966-03-23 1967-03-17 Improvements in and relating to the production of cellular bodies of low specific gravity
US623882A US3640787A (en) 1966-03-23 1967-03-17 Method of producing shaped bodies of low specific gravity
DE1778653A DE1778653C3 (en) 1966-03-23 1968-05-20 Process for the production of specifically light plastic bodies
GB25208/68A GB1174374A (en) 1966-03-23 1968-05-27 Improvements in and Relating to the Production of Cellular Bodies of Low Specific Gravity.
US3598672D US3598672A (en) 1966-03-23 1968-08-13 Method of producing shaped bodies of low specific gravity
US3723232D US3723232A (en) 1966-03-23 1971-02-16 Bdies of low specific gravity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH960166A CH473740A (en) 1966-07-01 1966-07-01 Aggregate material for concrete and other pourable masses and methods for producing the aggregate material

Publications (1)

Publication Number Publication Date
CH473740A true CH473740A (en) 1969-06-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CH960166A CH473740A (en) 1966-03-23 1966-07-01 Aggregate material for concrete and other pourable masses and methods for producing the aggregate material

Country Status (1)

Country Link
CH (1) CH473740A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT392962B (en) * 1988-08-01 1991-07-25 Stracke Ing Markus Process for producing lightweight concrete aggregates from recycled foam material and the use of the same for achieving extraordinary concrete properties
AT394186B (en) * 1989-11-23 1992-02-10 Stracke Ing Markus Process for producing lightweight concrete aggregates
AT394548B (en) * 1987-02-19 1992-04-27 Stracke Ing Markus Process for producing aggregates from foam particles for producing lightweight concrete
WO2012003846A1 (en) * 2010-07-08 2012-01-12 Siemens Aktiengesellschaft Stator for a magnetic transmission and method for producing same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT394548B (en) * 1987-02-19 1992-04-27 Stracke Ing Markus Process for producing aggregates from foam particles for producing lightweight concrete
AT392962B (en) * 1988-08-01 1991-07-25 Stracke Ing Markus Process for producing lightweight concrete aggregates from recycled foam material and the use of the same for achieving extraordinary concrete properties
AT394186B (en) * 1989-11-23 1992-02-10 Stracke Ing Markus Process for producing lightweight concrete aggregates
WO2012003846A1 (en) * 2010-07-08 2012-01-12 Siemens Aktiengesellschaft Stator for a magnetic transmission and method for producing same

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