EP0086188A1 - Verfahren zur Strukturblosslegung einer Betonplatte - Google Patents

Verfahren zur Strukturblosslegung einer Betonplatte Download PDF

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Publication number
EP0086188A1
EP0086188A1 EP83870008A EP83870008A EP0086188A1 EP 0086188 A1 EP0086188 A1 EP 0086188A1 EP 83870008 A EP83870008 A EP 83870008A EP 83870008 A EP83870008 A EP 83870008A EP 0086188 A1 EP0086188 A1 EP 0086188A1
Authority
EP
European Patent Office
Prior art keywords
concrete
plastic sheet
spraying
slab
concrete slab
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.)
Granted
Application number
EP83870008A
Other languages
English (en)
French (fr)
Other versions
EP0086188B1 (de
Inventor
Romain Jean-Baptiste Buys
Jean-Aimé Manouvrier
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.)
BUYS ROMAIN JEAN BAPTISTE
MANOUVRIER JEAN AIME
Original Assignee
BUYS ROMAIN JEAN BAPTISTE
MANOUVRIER JEAN AIME
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
Priority claimed from BE0/207255A external-priority patent/BE892057A/fr
Application filed by BUYS ROMAIN JEAN BAPTISTE, MANOUVRIER JEAN AIME filed Critical BUYS ROMAIN JEAN BAPTISTE
Priority to AT83870008T priority Critical patent/ATE19273T1/de
Publication of EP0086188A1 publication Critical patent/EP0086188A1/de
Application granted granted Critical
Publication of EP0086188B1 publication Critical patent/EP0086188B1/de
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/43—Machines or arrangements for roughening or patterning freshly-laid paving courses, e.g. indenting rollers
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/03—Arrangements for curing paving; Devices for applying curing means; Devices for laying prefabricated underlay, e.g. sheets, membranes; Protecting paving under construction or while curing, e.g. use of tents

Definitions

  • the present invention relates to a surface treatment method of a road concrete slab, according to which a fresh surface retarding agent is spread over the freshly used slab and a top layer of mortar is removed using 'a brush.
  • the purpose of the process is to remove the top layer of mortar from the concrete slab between the aggregates in order to obtain rough concrete. It is particularly applicable to the finishing of the coating of a concrete road, in order to give it good non-slip characteristics.
  • the invention also relates to a device designed to implement the method according to the invention.
  • the cantilever assembly requires a sufficiently solid chassis to take up the weight and the efforts of the rotary brushes extending over the entire width of the slab as well as the weight of the concrete receiving tank removed by the brushes and the squeegee chain intended to remove the concrete laterally.
  • a second drawback of this known method lies in the difficulty of determining the moment when it must be implemented. This moment is difficult to choose because the setting time of the concrete is closely linked to the inevitable variations in water content of the fresh concrete, variations in atmospheric conditions and, in particular, at ambient temperature, the action of wind and from the sun, which influence the setting process on the concrete surface.
  • the concrete setting time can, in fact, vary within wide limits, between 1 and 15 hours, and even more, if the temperature is low.
  • Another disadvantage of the known methods consists in the fact that it is difficult to communicate to the chemical stripping machine the rate of unloading of the concrete trucks which supply the concrete laying machine.
  • the maximum delay of setting delay is limited for this process. This may require working at night.
  • the article mentions the spreading of sand on said slab. This sand is kept moist by spraying with water.
  • the article also describes the use of polyester mats that are kept wet, or the placement of a straw blanket on the slab, but then in combination with a curing product.
  • the article also teaches that to ensure an ideal degree of humidity for the hardening of concrete, it is necessary to finely spray a certain amount of water on the slab or cover it with waterproof sheets.
  • the article finally recognizes that the most common method consists in combining the spraying of a curing product and the installation of a movable roof in order to prevent possible washing out by rain or, by protecting the slab from concrete from direct sunlight, avoid drying too quickly.
  • This known process does not however protect the concrete slab from the action of the wind which, by influencing the rate of evaporation of water, influences the setting process on the surface of the concrete. It does not ensure a sufficiently rigorous constancy of the time between the spraying of the setting retardant agent and the brushing.
  • the present invention aims to remedy the drawbacks of the above methods. It relates to a chemical stripping process of a road concrete slab, according to which a spraying agent on the concrete slab is sprayed onto a concrete slab as soon as it is applied.
  • This process is essentially characterized in that, simultaneously with the spraying of the retarding agent, a sheet of waterproof plastic material is spread on the upper surface of the concrete slab and immediately behind the spraying ramp and qu 'It is subsequently removed by brushing with spraying of pressurized water, between the surface aggregates, an upper layer of mortar, the setting of which has been delayed, as soon as the concrete has hardened in the underlying layer.
  • the spraying ramp of the setting retardant agent is protected from the effects of the wind, using a completely closed fairing, descending to about ten centimeters from the level of the concrete, so that it can be extended by the plastic sheet.
  • there. protects the spray from the setting retarder, from washing by rain, by covering the area between the spray boom and the system for unwinding the plastic sheet, by means of a roof.
  • the plastic sheet is stretched as best as possible, just above the level of the slab by a height-adjustable roller and it is suitably applied to the surface of the concrete slab, dragging a burlap that is weighed down, wetting it when the intensity of the wind requires it.
  • plastic sheet a polyethylene sheet with a constant thickness of about 50 microns.
  • the invention also relates to a machine for implementing the method described above.
  • This machine comprising a chassis, mounted astride a concrete slab and a spraying boom extending over the entire width of the aforementioned slab, is essentially characterized in that it comprises means for supporting a mandrel intended to carry a roll of plastic sheet.
  • the machine for implementing a chemical stripping process of a concrete slab comprises a chassis designated as a whole by the reference notation 1 and mounted astride a freshly poured concrete slab 2.
  • the machine is used following a compacting-finishing machine, not shown, used to lay and smooth a concrete slab 2.
  • This chassis carries a spraying boom 3, extending over the entire width of the slab 2. It also includes support means 4 consisting of a pair of rollers of similar diameter, mounted along each of the side faces of the machine, at identical heights, so as to carry a plastic roll 5 allowing it to rotate about a substantially horizontal axis 1-1 '.
  • the setting of the setting retarding agent is carried out by spraying using an agricultural-type spraying boom, connected to two reservoirs 10.
  • the boom 3 extends over the entire length of the slab 2, so spread the setting retardant evenly over the concrete slab 2 using the nozzles 6.
  • a pigment is advantageously added to the solution to be sprayed. This pigment makes it possible to best approach the intended dosage. It also allows you to adjust the level of the spray boom 3 in relation to the concrete. so that there is mutual overlap of the jets of the various nozzles 6. This level adjustment of the ramp makes it possible to obtain a homogeneous distribution of the retarding agent on the concrete slab 2.
  • the spray boom 3 is protected from the wind by a cap 8 completely surrounding the boom and a fairing 9 down to 10 to 15 cm from the concrete surface.
  • the quantity of retardant solution to be sprayed per square meter is determined experimentally, depending on the degree of stripping required or desired.
  • a sheet of plastic material 7 impermeable to water is spread over the upper surface of the freshly poured and smoothed concrete slab.
  • the plastic sheet 7 is applied to the concrete slab 2, possibly covering it with a jute fabric 16 which is dragged over it and wetted if the intensity of the wind so requires.
  • the polyethylene sheet 7 is first removed by section of road over a length corresponding to that which is expected to be able to be brushed immediately. This avoids removing the polyethylene on too large a surface because the mortar dries on the surface and forms a crust more difficult to remove. To avoid the formation of this crust in hot weather, it is even advantageous to water the surface to be treated beforehand.
  • the polyethylene sheet is easily removed from the concrete surface and the top layer of mortar thus exposed and not yet set can be removed without much effort.
  • the present invention makes it possible to adapt the composition of the aqueous solution of the setting retarding agent, in order to obtain reproducible results, whatever the atmospheric conditions and also to be able to vary the time between spraying the retarder and disposal of mortar.
  • the kinematic viscosity measured with the Ubbelohde viscometer is of the order of 12.10 m / sec.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Sewage (AREA)
  • Glass Compositions (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
EP83870008A 1982-02-08 1983-01-31 Verfahren zur Strukturblosslegung einer Betonplatte Expired EP0086188B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83870008T ATE19273T1 (de) 1982-02-08 1983-01-31 Verfahren zur strukturblosslegung einer betonplatte.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE207255 1982-02-08
BE0/207255A BE892057A (fr) 1982-02-08 1982-02-08 Procede de denudage d'une dalle de beton

Publications (2)

Publication Number Publication Date
EP0086188A1 true EP0086188A1 (de) 1983-08-17
EP0086188B1 EP0086188B1 (de) 1986-04-16

Family

ID=3843496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83870008A Expired EP0086188B1 (de) 1982-02-08 1983-01-31 Verfahren zur Strukturblosslegung einer Betonplatte

Country Status (5)

Country Link
US (1) US4537796A (de)
EP (1) EP0086188B1 (de)
AT (1) ATE19273T1 (de)
CA (1) CA1247331A (de)
DE (1) DE3362995D1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2572744A1 (fr) * 1984-11-05 1986-05-09 Beugnet Sa Machine de denudage de beton cloute
CN111764279A (zh) * 2019-04-02 2020-10-13 广西长长路桥建设有限公司 一种公路桥梁施工用喷淋养护装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9812051D0 (en) * 1998-06-04 1998-07-29 Fitzpatrick Plc Concrete pavement
US6528111B1 (en) * 1999-04-07 2003-03-04 Nippon Hodo Co., Ltd. Tiled road surface
US20030097813A1 (en) * 2001-09-19 2003-05-29 Phelan Randal Scott Rapid protection system for freshly-placed concrete and a method of practicing the system
US7493736B2 (en) 2002-01-03 2009-02-24 Sanders Corporation Concrete slab protector
US11504732B1 (en) 2019-05-01 2022-11-22 Kurtis D. Scepaniak Spray machine
CN112681086A (zh) * 2020-12-17 2021-04-20 苌永涛 一种混凝土公路路面的养护装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747634C (de) * 1939-10-29 1944-10-06 Habil Karl Eberle Dr Ing Verfahren zur Herstellung von Betonstrassendecken
GB903111A (en) * 1959-01-12 1962-08-09 Johnston Brothers Contractors Improvements in or relating to machines for finishing concrete surfaces
FR1454736A (fr) * 1965-11-15 1966-02-11 Abg Werke Gmbh Engin de pulvérisation, notamment pour le post-traitement de chaussées fraîchement bétonnées
FR2190137A5 (en) * 1972-06-19 1974-01-25 Cambon Christia Non-slip flagstone of cement and marble - on a concrete substrate
DE2348339A1 (de) * 1973-09-26 1975-04-17 Schlegel Engineering Gmbh Vorrichtung zum auslegen einer flexiblen bahn
DE2703808B1 (de) * 1977-01-29 1978-06-15 Mc Bauchemie Mueller & Co Chem Verfahren zum Aufrauhen von Beton- und/oder Estrich-Oberflaechen,insbesondere von Beton-Fahrbahnoberflaechen
FR2473579A1 (fr) * 1980-01-11 1981-07-17 Sika Ag Procede pour l'execution de revetements en beton a texture en relief

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR460754A (fr) * 1913-07-25 1913-12-11 Paul Frank Procédé pour former des revetements solides et granuleux sur des enduits et des pierres artificielles

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747634C (de) * 1939-10-29 1944-10-06 Habil Karl Eberle Dr Ing Verfahren zur Herstellung von Betonstrassendecken
GB903111A (en) * 1959-01-12 1962-08-09 Johnston Brothers Contractors Improvements in or relating to machines for finishing concrete surfaces
FR1454736A (fr) * 1965-11-15 1966-02-11 Abg Werke Gmbh Engin de pulvérisation, notamment pour le post-traitement de chaussées fraîchement bétonnées
FR2190137A5 (en) * 1972-06-19 1974-01-25 Cambon Christia Non-slip flagstone of cement and marble - on a concrete substrate
DE2348339A1 (de) * 1973-09-26 1975-04-17 Schlegel Engineering Gmbh Vorrichtung zum auslegen einer flexiblen bahn
DE2703808B1 (de) * 1977-01-29 1978-06-15 Mc Bauchemie Mueller & Co Chem Verfahren zum Aufrauhen von Beton- und/oder Estrich-Oberflaechen,insbesondere von Beton-Fahrbahnoberflaechen
FR2473579A1 (fr) * 1980-01-11 1981-07-17 Sika Ag Procede pour l'execution de revetements en beton a texture en relief

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
WEGEN, vol. 49, no. 2, février 1975, pages 711.71 - 711.78, Schagen, NL *
WEGEN, vol. 49, no. 6, juin 1975, pages 715.204 - 715.208, Schagen, NL *
WEGEN, vol. 56, no. 12, décembre 1982, page 805.405 - 805.411, Schagen, NL *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2572744A1 (fr) * 1984-11-05 1986-05-09 Beugnet Sa Machine de denudage de beton cloute
CN111764279A (zh) * 2019-04-02 2020-10-13 广西长长路桥建设有限公司 一种公路桥梁施工用喷淋养护装置

Also Published As

Publication number Publication date
EP0086188B1 (de) 1986-04-16
CA1247331A (fr) 1988-12-28
US4537796A (en) 1985-08-27
DE3362995D1 (en) 1986-05-22
ATE19273T1 (de) 1986-05-15

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