EP0517505A1 - Verfahren und Vorrichtung zum Auflegen eines Oberflächenschichtstoffes auf eine Betonfertigplatte - Google Patents

Verfahren und Vorrichtung zum Auflegen eines Oberflächenschichtstoffes auf eine Betonfertigplatte Download PDF

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Publication number
EP0517505A1
EP0517505A1 EP92305088A EP92305088A EP0517505A1 EP 0517505 A1 EP0517505 A1 EP 0517505A1 EP 92305088 A EP92305088 A EP 92305088A EP 92305088 A EP92305088 A EP 92305088A EP 0517505 A1 EP0517505 A1 EP 0517505A1
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EP
European Patent Office
Prior art keywords
slab
surface material
fabricator
concrete
behind
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Withdrawn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
EP92305088A
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English (en)
French (fr)
Inventor
John Anthony Douglas Durham
Zabiholah Asadolah Golmohamad
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0517505A1 publication Critical patent/EP0517505A1/de
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
    • E04B5/043—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement having elongated hollow cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/084—Producing shaped prefabricated articles from the material by vibrating or jolting the vibrating moulds or cores being moved horizontally for making strands of moulded articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
    • B28B3/22—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded by screw or worm
    • B28B3/228—Slipform casting extruder, e.g. self-propelled extruder

Definitions

  • the present invention relates to an apparatus whereby a layer of surface material, more especially plaster or mortar mix, can be provided on a prefabricated concrete slab of indeterminate length.
  • Machines known as concrete hollow core production machines are used throughout the world to make an internationally recognised standard of precast concrete slab.
  • a typical slab is usually cast in lengths of around 100 linear metres with a width of 1.2 metres.
  • a series of hollow cores running the full length of the slab are formed in the cross section of a slab. Reinforcing wires or steel reinforcing bars are placed centrally between the hollow cores.
  • An accurate mould or casting bed supports the hollow core casting machine.
  • the machine with 4 wheels, sits astride the casting bed on guide rails precisely aligned to the bed. Concrete is fed into the machine which moves down the bed as it slowly forces the concrete mix from one end into a precisely formed preset slab section. Whilst the soffit, or underside of the cast slab is generally very flat, the top surface of the slab tends to undulate and have a honeycombed surface.
  • a second independent machine is used to coat the slab top with a smooth and flat mortar mix. This machine is generally used when the slab has set some 10-12 hours after the concrete slab has been made.
  • a surface material laying apparatus for use with a concrete slab fabricator, of the type which moves relative to a stationary bed leaving a preformed slab behind it, the laying apparatus comprising: a feed hopper for holding plaster or mortar mix, said feed hopper having a throat for directing said plaster or mortar mix onto said preformed slab, means to maintain said feed hopper a predetermined distance behind said slab fabricator, and a smoothing member adapted to be attached to the slab fabricator behind the feed hopper relative to the direction of travel of the slab fabricator, for smoothing the surface material deposited onto said slab by said feed hopper into a topping layer.
  • the present invention also provides a combination of a concrete slab fabricator of the type which moves relative to a stationary bed leaving a preformed slab behind it; and a surface material laying apparatus as described above.
  • the present invention further provides a method of fabricating a concrete slab, the method comprising the steps of; providing a stationary bed and a casting machine of the type which moves relative to a stationary bed leaving a preformed slab behind it; operating the machine to fabricate a concrete slab; and as the machine moves, spreading a surface material on the slab close behind the machine, before the concrete cures, to form a topping layer.
  • the present invention provides a concrete slab having a main part formed by vibrating and compacting a concrete mix on a molding bed and a topping layer of surface material bonded to one surface of said main part by the vibrations used to form said main part.
  • the surface material is preferably a plaster or mortar mix.
  • the mortar mix can be introduced on to the cast slab shortly after it is formed by the casting machine.
  • a simple 4 wheeled trolley free-wheeling behind the casting machine and resting on the same guide rails as the casting machine and moved, as necessary by machine operatives, masons with a hand or mechanically operated tamping and levelling device can accurately "float off” the plaster mix. This ensures a precise and consistent overall thickness of the completed concrete slab with its mortar mix topping.
  • the plaster/mortar mix is preferably introduced into a separate feed hopper set close behind, but spaced from, the main concrete feed hopper.
  • the base of the hopper is a narrow open uninterrupted throat across the full width of the casting machine. Close behind the casting machine the plaster mix flows by gravity through the throat of the mortar feed hopper and falls onto the cast concrete. The residual vibration of the casting machine concrete mix vibrators serving to thoroughly bond the plaster mix onto the cast concrete below.
  • the cast concrete and the plaster mix set at the same time and can be cut up into small sections, as required, after approximately 8-12 hours of curing time.
  • FIG. 1 there is illustrated a typical cross section of a hollow core casting machine.
  • the machine sits via 4 wheels (10) on a casting bed rail (11).
  • a series of drive motors and gear boxes (12) rotate, via chains (13), a series of screws (14).
  • the machine remains stationary whilst the concrete mix is fed into the hopper (15).
  • the screws are then rotated mechanically and the vibrator motors (16) & (17) are started up.
  • the mix is forced through the moulding chamber (18) and compacted, forming into the required slab section (19).
  • the machine screws itself out of the compacted mix and thus moves in the direction of the arrow (20), in other words away from the compacted and cast slab which remains stationary on the casting bed.
  • a standard mortar mix (22) eg 1 part cement to 3 parts sand with appropriate water content to allow the mix to flow, is poured in the feed hopper (23).
  • the mix immediately flows gravitationally via a throat (24) directly on the top of the cast concrete slab (19).
  • a smoothing trowel (25) levels and smooths the plaster mix (26) which flows continuously from the hopper (23) as the machine moves away from the compacted slab (19) that it has 'screwed' itself out of.
  • the vibration produced by the vibrators (16) & (17) effectively bonds the plaster mix (26) onto the cast concrete slab (19), and also ensures even flow of mortar from the hopper.
  • Figure 2 shows a typical cast concrete slab section as it leaves the casting machine.
  • 6 holes, or hollow cores, are shown (27).
  • the cores can be round, square or oval to suit the required design.
  • the top surface (28) can, if the manufacturing machine is in excellent working order, be flat; however depending on variations in the concrete mix consistency, wear of machine etc, the top is very often randomly undulating.
  • Figure 3 shows the same slab type section as Figure 2, with the complete topping mix (26) bonded onto the top of the cast concrete slab (19).
  • Figure 4 shows a typical freewheeling trolley resting via 4 wheels (29) onto casting bed rails (11).
  • the rails in turn affixed to the continuous casting bed (30).
  • the levelling trolley is pushed by hand or mechanically moved to straddle the area requiring finishing, usually some 1-3m away from the continuously moving casting machine (1).
  • a tamping base (31) precisely defines the top finish level required for the topping mix (26).
  • the base (31) is rigidly fixed but adjustable for height to the outer wheels (29). This enables the trolley to be adapted to finish off various heights of cast slab and mortar mixes.
  • the inside face of the tamping base (32) is completely separated by an air gap (33) from the top edge of the mortar mix (34). This allows the whole levelling trolley to be freely moved up and down the casting bed (3) at any time without restrictions.
  • a straddle bar (35) holds the two tamping bases (31) each side of the casting bed rails (3).
  • a levelling bar (36), which can either be operated by hand or mechanically vibrated is slid manually or mechanically backwards and forwards across the two tamping bases (31) straddling the casting bed (30). At all times the levelling bar (36) is kept in constant contact with the base (31).
  • plaster mix (26) is precisely trowelled off to give an exact overall thickness of cast slab and mortar as shown in the cut away section of the completed slab (26).
  • the final touch up of the trowelled mortar mix is effected by a mason with a hand trowel following behind the levelling trolley.
  • Figure 5 shows a revised topping machine which has certain advantages over the device described with reference to Figure 1.
  • the only casting machine is now separated from the hollow core casting machine by a distance in the range of from 500 to 1500 mm, preferably 500 to 800 mm. However, it is still physically attached each side of the frame by means 4. Thus, the hollow core machine pulls the topping machine along the bed as it casts its slab. There is thus no separate motive force for the revised topping machine.
  • the machine rests on four wheels 7 which free wheel on the same rails as the cast machine uses.
  • the mortar mix 8 feeds onto the top of the cast slab 9.
  • the vibrator is shown as 3.
  • the vibration of the casting machine was sufficient to 'flow' the mortar mix along the cast bed without additional vibration in this embodiment there is still enough residual vibration in the slab from the casting machine to ensure a proper bond of the mortar mix on the freshly cast hollow core slab, even with the topping machine placed some 50-80cm from the vibrators of the casting machine.
  • the topping machine is now a separate independent machine and thus needs counter-weights to ensure that it is firmly located over the casting bed rails 5 and 6.
  • a similar smoothing trowel 2 is used on the revised topping machine to ensure that mix 1 flows evenly over the surface of the cast slab.
  • Figure 6 shows a further alternative embodiment in which the topping machine is physically separate from the slab fabricator.
  • the topping machine is provided with a motor 61 to propel it and is controlled by controller 62 to maintain a set distance, in the range of 500 to 1500 mm, behind the slab fabricator.
  • the controller 62 is supplied with information on the position of the slab fabricator and topping machine by position sensors 63 and 64.
  • This embodiment provides the same advantages as that of Figure 5.
EP92305088A 1991-06-06 1992-06-03 Verfahren und Vorrichtung zum Auflegen eines Oberflächenschichtstoffes auf eine Betonfertigplatte Withdrawn EP0517505A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9112186 1991-06-06
GB9112186A GB2256380A (en) 1991-06-06 1991-06-06 Device for plaster/mortar mix topping a prefabricated concrete slab.

Publications (1)

Publication Number Publication Date
EP0517505A1 true EP0517505A1 (de) 1992-12-09

Family

ID=10696197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92305088A Withdrawn EP0517505A1 (de) 1991-06-06 1992-06-03 Verfahren und Vorrichtung zum Auflegen eines Oberflächenschichtstoffes auf eine Betonfertigplatte

Country Status (2)

Country Link
EP (1) EP0517505A1 (de)
GB (1) GB2256380A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999002780A1 (fr) * 1997-07-11 1999-01-21 Henri Joel Bordure de chaussee reflechissante
EP1188528A1 (de) * 1999-09-24 2002-03-20 Drivetec Oy Verfahren und System zur Herstellung einer Verbundplatte und Verbundplatte
EP1398128A2 (de) 2002-09-16 2004-03-17 Consolis Technology Oy AB Verfahren und Vorrichtung zum Giessen von Betonprodukten
EP1525968A2 (de) * 2003-10-20 2005-04-27 Consolis Technology Oy Ab Verfahren und Vorrichtung zum Giessen von Betongegenständen
CN111136764A (zh) * 2019-12-31 2020-05-12 江苏省建筑工程集团有限公司 一种预制混凝土夹心保温板生产装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109262801B (zh) * 2018-10-19 2023-07-07 中铁一局集团有限公司 一种预制件抹面机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE500557A (de) *
GB1007965A (en) * 1961-04-29 1965-10-22 Karl Ludwig Von Boddien Improvements in or relating to producing the edge strips of roads
GB1402317A (en) * 1971-03-09 1975-08-06 Larsen Nielsen Consultor As Machine for surface treatment of concrete panels
US4229153A (en) * 1979-03-08 1980-10-21 Hight Jr Henry D Apparatus for use in slip forming structural concrete members
US4280800A (en) * 1977-10-28 1981-07-28 Dyform Engineering Limited Concrete slab surface finishing apparatus
US4330242A (en) * 1978-05-03 1982-05-18 George Putti Machine for extruding hollow cored concrete sections

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB595232A (en) * 1944-11-23 1947-11-28 Prenton Brick & Tile Company L Improvements in or relating to building units
GB624377A (en) * 1946-10-31 1949-06-07 Prenton Brick And Tile Company Improvements in or relating to a machine for applying a facing (e.g. of cement or plaster) to building blocks, bricks or the like
BE489703A (de) * 1948-06-19
US3462747A (en) * 1965-08-12 1969-08-19 Rca Corp Semi-permanent memory
IE57364B1 (en) * 1986-06-11 1992-08-12 Lacon Floors Limited Apparatus for distributing a hardener onto wet concrete in the construction of a concrete floor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE500557A (de) *
GB1007965A (en) * 1961-04-29 1965-10-22 Karl Ludwig Von Boddien Improvements in or relating to producing the edge strips of roads
GB1402317A (en) * 1971-03-09 1975-08-06 Larsen Nielsen Consultor As Machine for surface treatment of concrete panels
US4280800A (en) * 1977-10-28 1981-07-28 Dyform Engineering Limited Concrete slab surface finishing apparatus
US4330242A (en) * 1978-05-03 1982-05-18 George Putti Machine for extruding hollow cored concrete sections
US4229153A (en) * 1979-03-08 1980-10-21 Hight Jr Henry D Apparatus for use in slip forming structural concrete members

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999002780A1 (fr) * 1997-07-11 1999-01-21 Henri Joel Bordure de chaussee reflechissante
EP1188528A1 (de) * 1999-09-24 2002-03-20 Drivetec Oy Verfahren und System zur Herstellung einer Verbundplatte und Verbundplatte
EP1398128A2 (de) 2002-09-16 2004-03-17 Consolis Technology Oy AB Verfahren und Vorrichtung zum Giessen von Betonprodukten
US6841100B2 (en) 2002-09-16 2005-01-11 Consolis Technology Oy Ab Method for casting a concrete product
EP1398128A3 (de) * 2002-09-16 2005-09-21 Consolis Technology Oy AB Verfahren und Vorrichtung zum Giessen von Betonprodukten
EP1525968A2 (de) * 2003-10-20 2005-04-27 Consolis Technology Oy Ab Verfahren und Vorrichtung zum Giessen von Betongegenständen
EP1525968A3 (de) * 2003-10-20 2006-04-26 Consolis Technology Oy Ab Verfahren und Vorrichtung zum Giessen von Betongegenständen
US7708917B2 (en) 2003-10-20 2010-05-04 Elematic Oy Ab Method and apparatus for casting concrete elements
CN111136764A (zh) * 2019-12-31 2020-05-12 江苏省建筑工程集团有限公司 一种预制混凝土夹心保温板生产装置

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Publication number Publication date
GB9112186D0 (en) 1991-07-24
GB2256380A (en) 1992-12-09

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