EP1000719A2 - Procédé et dispositif pour l'obtention d'un ciment ou d'un mortier projetable - Google Patents

Procédé et dispositif pour l'obtention d'un ciment ou d'un mortier projetable Download PDF

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Publication number
EP1000719A2
EP1000719A2 EP99121942A EP99121942A EP1000719A2 EP 1000719 A2 EP1000719 A2 EP 1000719A2 EP 99121942 A EP99121942 A EP 99121942A EP 99121942 A EP99121942 A EP 99121942A EP 1000719 A2 EP1000719 A2 EP 1000719A2
Authority
EP
European Patent Office
Prior art keywords
premix
compressed air
binder
substances
aggregate
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.)
Withdrawn
Application number
EP99121942A
Other languages
German (de)
English (en)
Other versions
EP1000719A3 (fr
Inventor
Albrecht Rombold
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.)
Rombold & Gfrohrer & Co KG GmbH
Original Assignee
Rombold & Gfrohrer & Co KG GmbH
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 Rombold & Gfrohrer & Co KG GmbH filed Critical Rombold & Gfrohrer & Co KG GmbH
Publication of EP1000719A2 publication Critical patent/EP1000719A2/fr
Publication of EP1000719A3 publication Critical patent/EP1000719A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/02—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions without using driven mechanical means effecting the mixing
    • B28C5/026—Mixing guns or nozzles; Injector mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/46—Arrangements for applying super- or sub-atmospheric pressure during mixing; Arrangements for cooling or heating during mixing, e.g. by introducing vapour
    • B28C5/462—Mixing at sub- or super-atmospheric pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
    • B28C7/10—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors by means of rotary members, e.g. inclinable screws

Definitions

  • the invention relates to a method for producing a Shotcrete or shot mortar on site, i.e. on a Construction site.
  • the invention also relates to a Device, in particular for performing the above.
  • Procedure with two storage containers for holding two substances to be mixed with each other, each Storage container has a discharge member, via which the substance is discharged from the storage container, and a mixing device is provided in which the two Substances are mixed together, and a Transport line is provided, through which the Mixture of substances e.g. is fed to a spray nozzle.
  • EP 698 419 A1 describes a system for spraying Dry building materials became known.
  • This facility owns a storage container in which the dry building material is stocked. There is one on this reservoir Compressed air line connected and the dry building material is conveyed from the storage container by means of compressed air.
  • the Storage container is therefore designed as a pressure container. This has the main advantage that between the Transport line in which the dry building material is used Compressed air passed, and the reservoir no seal is required.
  • Such seals are e.g. generated by rotary locks, via which the Dry building material transported on the one hand, on the other is dosed. Because the cells in turn in the lock are sealed, can in the delivery line Compressed air located in the storage container.
  • the storage container is usually dry Mixture of binder and aggregate filled, this Mixture usually over long distances to the construction site must be transported. This transportation is very costly and the provision of the dried Surcharge, which has a grain size in the range from 0 mm to 8 mm also has a relatively high cost connected because the aggregate is normally earth-moist.
  • the invention is therefore based on the object To provide methods and / or a device with a high-quality shotcrete or spray mortar at one relatively low price can be produced, or the Production of the binder aggregate mixture is relatively exact and is easy to do.
  • This problem is solved with a method in which a dry premix of binder and aggregate with a Grain size in the range from 0 min to 6 mm, in particular from 0 mm to 4 mm delivered and possibly in a storage silo is filled, a surcharge with a grain size in the range from 2 mm to 8 mm, in particular from 4 mm to 8 mm on site is stocked, i.e. is delivered up close, that Premix and the surcharge in the desired Mixing ratio to a binder aggregate mixture are mixed, and the binder additive mixture required amount of liquid, especially water is added.
  • This method according to the invention provides that neither complete binder aggregate mixture in dry form a long journey to the construction site is transported, nor that just the binder in dry form is fed, but that a premix of binder and premium as a premix over the long distance is transported.
  • the further surcharge will be on site bought and only needs a short distance be transported.
  • This premix consists of the Binder and the fine-grained aggregate, the one Grain size in the lower range. This lower one The range includes all grain sizes, which are relatively high Have or create capillary action.
  • This premix is now in dry form over the further distance which has the advantage that only a part of the finished binder aggregate mixture are transported got to. The transport costs compared to the above Process in which the entire binder aggregate mixture transported are therefore lower.
  • Another advantage is the method according to the invention seen in that the moisture content in the site Purchased surcharge low on the one hand, relative on the other is evenly distributed.
  • This surcharge is relative coarse-grained and can be stored in a moist form.
  • the capillary action is due to the relatively large grains reduced and the moisture distribution evenly, because a drop in moisture as described above does not is to be feared.
  • the premix and the Supplement mixed together you get one Binder aggregate mixture, which on the one hand is a very has high quality, on the other hand is relatively inexpensive, since the largest percentage of the surcharge is not over long distances must be transported.
  • the handling of the coarse grain surcharge on site i.e. the metering under Taking moisture into account, relatively simple.
  • the surcharge can be like already mentioned, in moist, i.e. earth moist condition or be stored dry on site.
  • Premix and / or the surcharge in a pressure silo be stocked.
  • the pressure silo has the main advantage that none Sealing elements are required which prevent the Compressed air used for mixing and as transport air into the storage silos.
  • the premix and / or the award is made by means of discharge organs, e.g. Cell wheel locks, screws or other dosing devices deducted.
  • the substances are in a stream of compressed air mixed together.
  • the premix and / or the aggregate and / or the binder aggregate mixture by means of the compressed air flow to a spray nozzle transported.
  • the water is then in the spray nozzle added.
  • that at a defined distance in front of the spray nozzle part of the water is already added, which makes the Dust content reduced when spraying the shotcrete becomes.
  • One embodiment provides that by means of a Weighing method of the two silos the composition of Premix and surcharge is determined.
  • the Weighing method is measuring the change in weight that experience the silos when the fabrics are removed. Through the Weight change can be the mass of the stripped fabrics determined and thus determined the mixing ratio become.
  • the premix and / or the surcharge by means of a screw conveyor from the storage silo (s) promoted.
  • the Quantity of the substance withdrawn (premix or surcharge) changed and thus the mixing ratio changed become.
  • the deducted premix and the deducted surcharge are fed to and in a screw conveyor Screw conveyor mixed together.
  • This mixture can be supported with compressed air.
  • From the Mixing device then becomes the premix and the aggregate or the already partially manufactured Binder additive mixture conveyed with compressed air and further mixed in the compressed air flow.
  • the object mentioned at the outset is achieved by means of a device according to the preamble of claim 9 solved, which is provided that the two Storage containers are designed as pressure silos that both substances mixed in a compressed air stream and over this compressed air flow are promoted.
  • the surcharge becomes the advantage achieved that no seals at the discharge opening of the Silos are required and that in a relatively simple way high-precision mixtures can be produced.
  • Mixing the individual substances to the substance mixture takes place in Compressed air flow, with a premix in one Mixing device can be done, which is a snail has, which is flowed through by the compressed air.
  • Under Snails are both rotating screw conveyors understood as well as on an inner circumference of a sleeve provided helical guide devices, which one a flow of swirl flowing through the sleeve imposition.
  • the pressure silos sit on top for optimal mixture generation
  • Weighing devices in particular pressure cells, on which exactly determines the weight of the discharged substances can be.
  • These pressure cells are with a Coupled computing device, via which the weight of the discharged substances and thereby the Mixing ratio of the two substances can be calculated can.
  • the Discharge devices can be controlled, in particular the speed the screw conveyor changeable.
  • Figure 1 shows a side view of the invention System, which in the present example has two storage silos 1 and 2 have.
  • these storage silos 1 and 2 there are two Stocks of substances to be mixed together. Should more than two substances, e.g. three fabrics together are mixed, then the invention Device three storage silos.
  • the storage silo 1 e.g. there is a surcharge 7, e.g. coarser River sand, especially with a grain size in the range of 2 mm to 10 mm, preferably from 4 mm to 8 mm is damp.
  • a surcharge 7 e.g. coarser River sand, especially with a grain size in the range of 2 mm to 10 mm, preferably from 4 mm to 8 mm is damp.
  • Premix 9 of binder and a fine-grained Surcharge especially with a grain size in the range of 0 mm to 7 mm, preferably from 0 mm to 4 mm
  • Premix 9 is dry.
  • the two storage silos 1 and 2 are designed as pressure silos 3 and 4.
  • a screw conveyor 5 is provided by a electric drive 6 is driven and the supplement 7th out of the pressure silo 3 and a mixing device 8 feeds.
  • the premix 9 flows over one Slider closure 10 to a screw conveyor 11 via which the premix 9 also the mixing device 8th is forwarded.
  • the two pressure silos 3 and 4 stand with their stands 13 on pressure cells 12, via which the weight of the Pressure silos 3 and 4 with ingredient (surcharge 7 and Premix 9) can be determined.
  • the pressure cells 12 are with a computing device (not shown) linked, which in turn the drive 6 or Screw conveyor 11 controls.
  • FIG 2 shows a schematic diagram of a first Embodiment of the device according to the invention, where 14 denotes a compressor is.
  • This compressor 14 goes Compressed air lines 15 to 19.
  • the compressed air line 19 opens into the pressure silo 3 in the area of the screw conveyor 5 and directs compressed air into the screw conveyor 5, whereby the Discharge is supported.
  • the pressure in the pressure silo 3 is by means of the supplied via the compressed air line 18 Maintain compressed air.
  • the screw conveyor 11 of the pressure silo 4 is also via the compressed air line 15 and the pressure silo 4 via the Compressed air line 16 connected to the compressor 14.
  • the The premix 9 is discharged by the Screw conveyor 11 and line 21 in the Mixing device 8.
  • This mixing device 8 is via the compressed air line 17th also connected to the compressor 14 and is with Compressed air applied. Both supplement 7 and that Premix 9 are in the mixing device 8 by means of a Auger 22 transported and mixed together and into the air by means of the compressed air blown in at the back Blown in thin current line 23.
  • a spray nozzle 24 is the binder aggregate mixture via a line 25th Water is supplied and the shotcrete produced is sprayed out.
  • the invention thus relates to a method for manufacturing a shotcrete or shotcrete, in which a Premix of binder and small-grain aggregate is produced, which is transported to the construction site and spot this premix with a coarse grain Supplement is mixed, the coarse-grained aggregate is transported close to the construction site.
  • the invention also relates to a device with which two Mixtures of substances quickly and precisely mixed together can be.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
EP99121942A 1998-11-11 1999-11-08 Procédé et dispositif pour l'obtention d'un ciment ou d'un mortier projetable Withdrawn EP1000719A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998151913 DE19851913C2 (de) 1998-11-11 1998-11-11 Verfahren zum Herstellen eines Spritzbetons oder Spritzmörtels
DE19851913 1998-11-11

Publications (2)

Publication Number Publication Date
EP1000719A2 true EP1000719A2 (fr) 2000-05-17
EP1000719A3 EP1000719A3 (fr) 2002-07-03

Family

ID=7887367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99121942A Withdrawn EP1000719A3 (fr) 1998-11-11 1999-11-08 Procédé et dispositif pour l'obtention d'un ciment ou d'un mortier projetable

Country Status (2)

Country Link
EP (1) EP1000719A3 (fr)
DE (1) DE19851913C2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002024425A1 (fr) * 2000-09-21 2002-03-28 Rdc Holdings Pte Ltd Production de beton
WO2002076698A3 (fr) * 2001-03-21 2002-11-28 Inotec Gmbh Procede d'application de mortier sur une surface de support
AT504803B1 (de) * 2004-07-14 2008-11-15 Johann Dipl Ing Keil Anlage zur herstellung und verarbeitung von nassspritz-mischgut
CN112171908A (zh) * 2020-09-30 2021-01-05 广州神盾智能装备科技有限公司 一种保温混凝土制备加工系统
WO2024183004A1 (fr) * 2023-03-07 2024-09-12 张楠 Système de fabrication de matériau en béton imprimé en 3d et procédé de fabrication

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005021976U1 (de) 2005-04-26 2012-01-16 Skumtech As Spritzbetonausbau mit Foliendichtung
EP2420648B1 (fr) 2005-07-09 2014-10-08 Skumtech AS Soutènement pour le domaine du BTP et du génie civile
DE102008012084A1 (de) 2007-04-02 2008-10-09 Skumtech As Brandschutz an Bauwerken
DE102008028147A1 (de) 2008-06-14 2009-12-17 Skumtech As Wärmeisolierung im Bergbau
DE102009016153A1 (de) 2009-04-05 2010-10-07 Skumtech As Befestiger im Ausbau unterirdischer Räume
DE102012012522A1 (de) 2011-11-16 2013-05-16 Skumtech As Ausbau im Hoch- und Tiefbau
CN106313307A (zh) * 2016-08-22 2017-01-11 武汉钢铁股份有限公司 一种熟石灰粉料稀释配制装置
DE102016124101A1 (de) * 2016-12-12 2018-06-14 Refratechnik Holding Gmbh Mischdüse für eine Spritzbetonauftragsvorrichtung, sowie Spritzbetonauftragsvorrichtung mit einer derartigen Mischdüse und Spritzbetonauftragsverfahren
DE102016124102A1 (de) * 2016-12-12 2018-06-14 Refratechnik Holding Gmbh Mischdüse für eine Spritzbetonauftragsvorrichtung, sowie Spritzbetonauftragsvorrichtung mit einer derartigen Mischdüse und Spritzbetonauftragsverfahren

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2942860A (en) * 1956-03-05 1960-06-28 Ian M Ridley Concrete gun, mixer and sandblaster
DE2437231C3 (de) * 1974-08-02 1978-05-03 P.F.T. Putz- Und Foerdertechnik Gmbh, 8715 Iphofen Vorrichtung zum Erzeugen eines luftporenhaltigen Mörtels
CH620269A5 (en) * 1977-05-17 1980-11-14 Sistemco Nv Process for producing coverings or articles consisting of or containing foamed gypsum and system for carrying out the process
DE3618735A1 (de) * 1986-06-04 1987-12-10 Maurer Dietrich Beton-nassspritzmaschine
JPH0749713B2 (ja) * 1989-01-30 1995-05-31 佐藤工業株式会社 造粒コンクリート吹付工法
FR2684326B1 (fr) * 1991-11-29 1996-06-07 Pierre Bonnavion Projection double flux de mortiers ou beton par voie seche.
DE9413836U1 (de) * 1994-08-26 1995-07-13 Rombold & Gfröhrer GmbH & Co. KG, 71254 Ditzingen Anlage zum Spritzen von Trockenbaustoffen
DE29510361U1 (de) * 1995-06-27 1995-09-21 Pro Aqua Geräte GmbH, 24340 Windeby Betonspritzgerät
DE19838710C2 (de) * 1998-08-26 2002-03-21 Spritzbeton Stuttgart Gmbh & C Verfahren zur Herstellung spritzfertigen Spritzbetons

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002024425A1 (fr) * 2000-09-21 2002-03-28 Rdc Holdings Pte Ltd Production de beton
WO2002076698A3 (fr) * 2001-03-21 2002-11-28 Inotec Gmbh Procede d'application de mortier sur une surface de support
AT504803B1 (de) * 2004-07-14 2008-11-15 Johann Dipl Ing Keil Anlage zur herstellung und verarbeitung von nassspritz-mischgut
CN112171908A (zh) * 2020-09-30 2021-01-05 广州神盾智能装备科技有限公司 一种保温混凝土制备加工系统
CN112171908B (zh) * 2020-09-30 2022-01-18 日照中顺商品混凝土有限公司 一种保温混凝土制备加工系统
WO2024183004A1 (fr) * 2023-03-07 2024-09-12 张楠 Système de fabrication de matériau en béton imprimé en 3d et procédé de fabrication

Also Published As

Publication number Publication date
DE19851913A1 (de) 2000-05-25
DE19851913C2 (de) 2001-02-15
EP1000719A3 (fr) 2002-07-03

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