WO2005102462A1 - Procede pour appliquer un revetement sur une structure contaminee - Google Patents

Procede pour appliquer un revetement sur une structure contaminee Download PDF

Info

Publication number
WO2005102462A1
WO2005102462A1 PCT/AU2005/000569 AU2005000569W WO2005102462A1 WO 2005102462 A1 WO2005102462 A1 WO 2005102462A1 AU 2005000569 W AU2005000569 W AU 2005000569W WO 2005102462 A1 WO2005102462 A1 WO 2005102462A1
Authority
WO
WIPO (PCT)
Prior art keywords
elastomeric material
coating
contaminated
contaminated surface
layer
Prior art date
Application number
PCT/AU2005/000569
Other languages
English (en)
Inventor
David Guthrie
Original Assignee
Poly Tech 5000 Pty Ltd
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 AU2004902163A external-priority patent/AU2004902163A0/en
Application filed by Poly Tech 5000 Pty Ltd filed Critical Poly Tech 5000 Pty Ltd
Publication of WO2005102462A1 publication Critical patent/WO2005102462A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4804—Two or more polyethers of different physical or chemical nature
    • C08G18/4808—Mixtures of two or more polyetherdiols
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00—Methods preventing fouling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/0066—Disposal of asbestos
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/20—Agglomeration, binding or encapsulation of solid waste
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/20—Agglomeration, binding or encapsulation of solid waste
    • B09B3/21—Agglomeration, binding or encapsulation of solid waste using organic binders or matrix
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C09D175/08—Polyurethanes from polyethers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/005—Repairing damaged coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers

Definitions

  • the present invention relates generally to a method of externally coating and protecting a contaminated surface of a structure so as to isolate and contain the contaminated surface.
  • the present invention relates to a method of providing a protective exterior coating to a metal structure, such as a bridge or the like, to prevent exposure to lead based paint present thereon.
  • one way in which to deal with the contaminated surfaces of such structures has been to remove the lead based paint from the surface of the structure.
  • the most common method of doing this has been open (nozzle) abrasion, whereby an abrasive material, generally steel shot/grit, sand or slag, is forced by compressed air through hoses onto the surface of the structure thereby removing the layer(s) of paint.
  • nozzle open
  • Other methods of paint removal such as vacuum blast cleaning, wet abrasive blast cleaning, and chemical cleaning are also used.
  • containment structures are erected, in the form of tarpaulins and the like, which fully enclose the structure being treated.
  • the containment structures employ large air movement structures which create a negative pressure inside the containment to remove the lead dust from the worksite.
  • the workers operating the machinery must be provided with full protective equipment, including respirators so that they are not exposed to any contact with the lead dust.
  • the present invention is a method of providing a protective surface coating to a contaminated surface of a structure, comprising: removing at least some of the relatively loosely attached portions of the surface from the contaminated surface; applying a first layer of elastomeric material to the contaminated surface so as to contain the contaminated surface on the structure; and coating the first layer of elastomeric material with a relatively protective surface coating.
  • the step of removing relatively loosely attached portions from the contaminated surface comprises scraping the contaminated surface to dislodge some or all of the relatively loosely attached portions therefrom. Following removal of the relatively loosely attached portions, the dislodged portions may be collected for disposal to prevent human contact with the dislodged portions and to prevent environmental contamination.
  • the collection of the dislodged portions of the contaminated surface may occur simultaneously with their removal.
  • a region of relatively lower pressure may be provided to ensure appropriate collection of the dislodged portions.
  • a vacuum suction scraper may be employed to perform the dislodgement and collection of the relatively loosely attached portions.
  • the surface can be washed with freshwater applied with absorbent sponges and the like, to remove the undesired deposits from the surface.
  • the contaminated surface may be wiped to reduce, or more preferably remove, moisture from the contaminated surface and enhance the subsequent adhesiveness of the contaminated surface with the first layer.
  • the contaminated surface may be wiped with a solvent solution.
  • the solvent solution may be a polyurethane thinner or an acetone.
  • solvent solution may be applied to the contaminated surface by a gun wash. In either form, the wiping of the contaminated surface may remove calcification and other imperfections from the contaminated surface without requiring removal of any of the contaminated surface.
  • the contaminated surface may be a surface of a structure comprising a paint containing lead-based pigments.
  • the structure may be a bridge, such as a railway or vehicle bridge.
  • the contaminated surface may be a surface of a structure containing asbestos, or an arsenic treated timber.
  • the structure may be a building or any other similar construction.
  • the elastomeric material may be a polyether based urethane elastomer.
  • the elastomeric material may be a two part urethane elastomer wherein one part of the elastomeric material comprises a glycol blend and the other part of the elastomeric material comprises an isocyanate.
  • the isocyanate may comprise diphenylmethane 4.4 diisocyanate and reaction products with hydroxylated compounds.
  • the glycol blend and the isocyanate can be mixed together to a proportion of 100:114 m/m to form the elastomeric material.
  • the step of applying the first layer of elastomeric material to the contaminated surface may comprise spraying the elastomeric material on the contaminated surface.
  • the elastomeric material may be sprayed at a relatively low pressure, for example, a pressure of between about 10 to 40 psi.
  • the step of applying the first layer of elastomeric material to the contaminated surface may comprise painting the material onto the surface by a brush, a roller or other suitable applicator.
  • the first layer of elastomeric material may be applied to the contaminated surface so as to form a dry film thickness of elastomeric material of between 1500 to 5000 microns.
  • the first layer of elastomeric material fully encapsulates the contaminated surface beneath the elastomeric material.
  • the step of coating the first layer of elastomeric material with a protective surface coating may comprise spraying the protective coating on the elastomeric material.
  • the protective surface coating may be applied to the elastomeric material by painting the coating on the elastomeric material using a brush or roller.
  • the protective surface coating may be applied to achieve a dry film thickness of between 75 to 100 microns.
  • the protective surface coating can be at least substantially UN impermeable thereby forming a barrier against destructive UN rays which may damage the layer of elastomeric material due to gradual breakdown of the layer, thereby exposing the contaminated material.
  • the protective surface coating also provides decorative colour finishing of the structure 20.
  • suitable protective coatings include paints, such as commercially available paints such as Dulux Weathershield (TM) or an equivalent solar reflective paint.
  • the present invention provides a method of protecting and encapsulating an existing surface of contaminated material without the need to further disturb the contaminated material, other than to remove relatively loose or flaking portions from the surface thereof.
  • the present invention is a structure having a protective surface coating as applied using the method of the first aspect of the invention.
  • the present invention is a protective surface coating for a structure applied using the method of the first aspect of the invention.
  • the present invention is a method of encapsulating a contaminant on a surface of a structure, comprising: mixing together a two part elastomeric material; and applying said elastomeric material to said surface of said structure to encapsulate said contaminant thereon.
  • the two part elastomeric material is a 100% solids, polyether based urethane elastomer.
  • the elastomeric material may have a first part consisting of a glycol blend and a second part consisting of an isocyanate.
  • the first and second parts may be mixed together to a proportion of 100:114 m/m.
  • the mixing may occur at a nozzle of a spray gun, and the elastomeric material may be applied to the structure surface immediately following mixture.
  • Fig. 1 is a block diagram showing some of the steps of the method of providing a protective coating to a contaminated surface of a structure, according to one embodiment of the present invention
  • Fig. 2A is a partial cross-sectional view of a contaminated surface of a structure
  • Fig. 2B is a partial cross-sectional view of a step of removing loose or relatively loose portions of a contaminated surface of a structure in accordance with an embodiment of the present invention
  • Fig. 2C is a partial cross-sectional view of a contaminated surface of a structure encapsulated by an encapsulating coating in accordance with an embodiment of the present invention
  • Fig. 2D is a partial cross-sectional view of a protective surface applied to an encapsulating coating which encapsulates a contaminated surface of a structure in accordance with an embodiment of the present invention.
  • the present invention is directed towards retaining the beneficial properties of the original lead-based paint of a structure, namely the improved weather resistance and rust proofing characteristics, by sealing the existing surface within an encapsulation layer such that repainting of the structure is possible by applying a fresh coating of paint to the outer surface of the encapsulating layer.
  • Such an arrangement enables continuing routine maintenance of the structure without exposure to the contaminants contained therein and preserves the longevity of the structure.
  • the present invention will be described in relation to its application to a bridge structure, it will be appreciated by those skilled in the art that the invention could be readily applied to a variety of different steel or iron structures or fabrications, each having a contaminated surface coating.
  • Fig. 1 and Figs. 2A - 2D some of the steps of the method according to one embodiment of the present invention are shown.
  • lead-based paint has been shown to exhibit good weather resistant properties and rust proofing characteristics, over time the surface of the coating 22 can deteriorate, exposing loose or relatively loose portions 21 which can readily separate from the surface of the existing coating.
  • Such portions 21 have been shown to pose a risk to individuals if ingested or inhaled and can cause pollution to the surrounding environment by releasing into the soil and waterways.
  • step 12 of Fig. 1 and as shown in Fig. 2B in order to prevent such loose or relatively loose portions 21 from separating from the surface 22 of the structure 20, and to prepare the surface 22 such that it can be isolated from further wear and human contact, at least some and preferably all of the loose or relatively loose portions are removed are removed from the surface 22.
  • the step of removing the loose or relatively loose portions 21 of the existing contaminated surface 22 is a relatively gentle process which is not directed at attacking or physically removing the existing contaminated surface 22.
  • a device such as a vacuum suction scraper 24 is passed over the surface of the structure, scraping away the loose or relatively loose portions 21 and collecting them in a collection bag through the action of the vacuum.
  • An alternative method of preparing the surface to remove the loose or relatively loose surface portions 21 from the contaminated surface 22, is to apply an initial sacrificial coating of an elastomeric material to the surface 22.
  • the elastomeric material may be the elastomeric material described below in relation to step 16, or may be an elastomeric material having lesser adhesion properties.
  • the sacrificial coating is applied and allowed to cure on the contaminated surface 22, after which it is torn away from the surface 22. In the act of tearing away the coating from the surface, any loose or relatively loose portions 21 are adhered to the sacrificial coating and removed, leaving behind a surface 22 devoid of such loose portions 21.
  • Such a method ensures that no airborne particles are released from the surface 22 and provides one-step removal and collection of the contaminated portions 21.
  • the surface can be washed with freshwater applied with absorbent sponges and the like, to remove the undesired deposits from the surface 22.
  • the prepared surface 22 is then wiped with an appropriate solvent to at least substantially, and preferably wholly, remove moisture from the surface and to reactivate the adhesiveness of the external surface 22. It is common for bridge surfaces having a lead based paint coating to have a degree of calcification upon the surface 22, which represents a "chalk-like" coating, and in step 14, this coating is removed.
  • the solvent used to wipe the surface 22 of the structure is dependant upon the type of paint system previously used to coat the surface. Typically, a polyurethane thinner or acetone is applied upon the surface of the structure, however other solvents may also be used as appropriate. For example, in instances where an acrylic paint has been previously applied to the surface 22, the solvent may be applied to the surface by a "gun wash".
  • step 14 Whilst step 14 is provided to clean and remove moisture from the surface 22 of the structure, during this process the adhesiveness of the surface 22 is also improved or reactivated to receive further coatings, as will be discussed below. It will also be appreciated that in this step, there is no intensive labour and minimal safety practices are required as the surface is merely wiped and no dust or waste water is produced which could be ingested or inhaled by the workers or leach into the environment. It will also be appreciated that steps 12 and 14 form preparation steps and could be performed at or around the same time.
  • step 16 the prepared surface 22 of the structure is completely covered with an encapsulating coating 26, which seals the surface 22 and the associated contaminants.
  • the encapsulating coating 26 is a 100% solids, two component, polyether based urethane elastomer system which, when applied over the existing surface 22, fully encapsulates the hazardous material, preventing any further loss or environmental degradation of the surface 22.
  • the pre-existing surface 22 is still present on the surface of the raw steel or iron structure 20, thereby providing the benefits of improved corrosion and weathering resistance inherent with traditional lead-based paints, whilst an additional protective jacket 26 is provided over the structure which protects the structure 20 against the elements, ensuring that the life of the bridge, and the resulting transport infrastructure is maximised.
  • the encapsulating coating 26 provides excellent adhesion, durability and water impermeability under a range of extreme climatic conditions, and embodies itself in the exact same shape as the shape of surface 22..
  • the coating 26 exhibits high tensile strength and flexibility which is important for use on structures such as bridges and other external structures, as the structure can experience movement due to thermal expansion and the like and the coating can move with the structure to provide complete protection and isolation of the underlying surface layers.
  • the elongation/flexibility properties of the coating 26 can be readily adjusted to match the environmental conditions of the structure to which it is to be applied.
  • the coating 26 may be blended to enable a larger degree of elongation/flexibility than may be required in regions that experience mild and consistent yearly temperatures.
  • the coating 26 is a 100% solids coating applied directly to the surface of the structure and has sufficient adhesion and structural stability to bind together without the need for intermediate mesh or foil binding layers or glass or sand particles interspersed therein.
  • Such additives can greatly reduce the thermal expandability and elongation/flexibility of the coating 26, making the application of the coating layer more difficult, and ultimately less likely to cope with variations in temperature cycles.
  • the coating 26 is also resistant to corrosion causing chemicals, oils, fuels and solvents, flame mould mildew and fungus, which make it particularly applicable to its use on bridges and other external structures.
  • An example of the general mechanical and physical properties associated with a particular blend of the coating 26 are summarised in the table below.
  • the encapsulating coating 26 is in the form of a two part urethane elastomer.
  • Part A of the urethane elastomer coating is a glycol blend which is mixed with Part B to a proportion of, for example, 100:114 m/m. Other proportions are also possible depending upon the optimal properties required.
  • Part B of the urethane elastomer coating is an isocyanate comprised of Diphenylmethane 4.4 diisocyanate and reaction products with hydroxylated compounds. Following mixture of the parts, the coating 26 forms a solution that can be readily applied to the surface 22 of the structure to form a tough, homogeneous, and seamless coating having a fast gel time.
  • parts A and B of the encapsulating coating 26 are only mixed immediately prior to application to the surface 22. This is achieved by separately supplying parts A and B to a spray application gun such that the two parts only become mixed at the nozzle at which point they are directly applied to the surface 22. Following mixture and application of the two parts, the mixture has a gel time of around 30 seconds. Such a fast gel time without the need to apply further adhesives or catalysts or heating to initiate curing, provides a surface which can be further processed almost immediately. Due to the properties of the coating 26, the spray can be applied by a low-pressure pump, at a 1:1 ratio to volume, at about 20 psi.
  • the desired DFT is between 1500 microns and 5000 microns, depending on the environmental conditions of the structure and as the wet film thickness (WFT) and the DFT are substantially the same, by controlling the thickness of the applied coating, the thickness of the final, dry coating 26 is also ensured.
  • the coating 26 can be applied to the bridge structure 20 in step 16 by spraying, and also by brushing, painting, or rolling.
  • the regions of a bridge structure 20 which are easily accessible are sprayed with the encapsulating coating 26, whilst the difficult to access areas are brush or roller coated.
  • only a single coating is required, however it may be necessary in some cases to stripe coat regions of the structure with a brush or roller and follow-up with a spray coating of the region.
  • the ambient temperature of the surface 22 of the structure should be no less than about 5°C and no greater than about 60°C.
  • the relative humidity in the vicinity of the structure 20 should also not exceed about 85%.
  • a finishing coating 28 is then applied to the surface of the encapsulating coating 26 at step 18.
  • the finishing coat 28 can be applied almost immediately following the application of the encapsulating coating 26, due to the relatively fast curing time of the encapsulating coating 26.
  • the finishing coating 28 generally performs a duel function. Firstly, it provides a desired colour finish to the structure 20 thereby fulfilling an aesthetic function. Secondly, it acts as a barrier to provide suitable protection from the weather and from harmful UN rays which, over time, may act to break down the encapsulating coating 26, as the encapsulating coating 26 is intended to last the lifetime of the structure 20 to provide permanent encapsulation of the lead based paint.
  • the finishing coating 28 may be in the form of a water-based single-pack acrylic, UN stable, industrial grade finish paint that is spray applied over the surface of the protective coating, by conventional methods, to a DFT of between 75 - 100 microns.
  • the finishing coating 28 could be a commercially available paint such as Dulux Weathershield (TM) or an equivalent solar reflective paint. Due to the particularly good adhesion and wrapping characteristics of the encapsulating coating 26, the finishing coating 28 can be readily applied, to form a strong bond therewith. In this regard, as the finishing coating 28 deteriorates over time, for instance following the expiration of the warranty of the finishing coating 28, the outer surface of the structure 20 can be merely washed down and repainted. As the lead-based paint is encapsulated within the coating 26 there is no longer a need to directly handle the lead based paint surface and thereby a stable, uncontaminated external surface of the structure is provided for future maintenance programs.
  • TM Dulux Weathershield
  • the conventional method has been taken to comprise a method requiring a full enclosure of the bridge with removal and replacement of the existing surface coatings, and the estimation has been made based on a 10,000 m steel bridge having a heavily pitted condition with a rusted existing lead based paint coating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

La présente invention concerne un procédé pour appliquer un revêtement de surface de protection sur une surface contaminée d'une structure (20). Ce procédé consiste à enlever des parties attachées de manière relativement faible (21) de la surface contaminée (22), à appliquer une première couche de matière élastomère (26) sur la surface contaminée (22), de manière à contenir la surface contaminée (22) sur la structure (20), puis à appliquer un revêtement de surface de protection (28) sur la première couche de matière élastomère.
PCT/AU2005/000569 2004-04-23 2005-04-26 Procede pour appliquer un revetement sur une structure contaminee WO2005102462A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2004902163A AU2004902163A0 (en) 2004-04-23 The encapulation and stabilisation of hazadose materials and points on steel bridge structers
AU2004902163 2004-04-23

Publications (1)

Publication Number Publication Date
WO2005102462A1 true WO2005102462A1 (fr) 2005-11-03

Family

ID=35196759

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2005/000569 WO2005102462A1 (fr) 2004-04-23 2005-04-26 Procede pour appliquer un revetement sur une structure contaminee

Country Status (1)

Country Link
WO (1) WO2005102462A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2610018A1 (fr) * 2011-12-30 2013-07-03 Normalu Dispositif de confinement d'une structure en amiante
JP2018084059A (ja) * 2016-11-22 2018-05-31 新日鐵住金株式会社 防護層を有する鋼製部材、基礎構造物、防護層を有する鋼製部材の製造方法及び基礎構造物の施工方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3236682A1 (de) * 1982-10-04 1984-04-05 Adolf Dipl.-Ing. 5788 Winterberg Voß Verfahren zum versiegeln von offenen asbestschichten an gebaeudedecken
EP0414244A2 (fr) * 1989-08-23 1991-02-27 Baierl & Demmelhuber GmbH & Co. Akustik & Trockenbau KG Mortier pour le scellement de revêtements projetés en amiante-ciment
US5143757A (en) * 1989-03-17 1992-09-01 SKINNER George Encapsulating a substrate
DE19537512A1 (de) * 1995-08-18 1997-04-30 Witega Angewandte Werkstoff Forschung Gemeinnuetzige Gmbh Adlershof Mittel zur Oberflächenbehandlung von Asbesten und asbesthaltigen zementgebundenen Abfallstoffen
WO1998013106A1 (fr) * 1996-09-27 1998-04-02 W.R. Grace & Co.-Conn. Composition mousseuse de traitement de materiaux contenant de l'amiante et procede associe
US6001423A (en) * 1990-05-14 1999-12-14 Johnson; Roy Method of lead paint encapsulation
WO2003085064A2 (fr) * 2002-04-04 2003-10-16 Mt2, Llc Traitement de surfaces permettant de stabiliser des metaux lourds

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3236682A1 (de) * 1982-10-04 1984-04-05 Adolf Dipl.-Ing. 5788 Winterberg Voß Verfahren zum versiegeln von offenen asbestschichten an gebaeudedecken
US5143757A (en) * 1989-03-17 1992-09-01 SKINNER George Encapsulating a substrate
EP0414244A2 (fr) * 1989-08-23 1991-02-27 Baierl & Demmelhuber GmbH & Co. Akustik & Trockenbau KG Mortier pour le scellement de revêtements projetés en amiante-ciment
US6001423A (en) * 1990-05-14 1999-12-14 Johnson; Roy Method of lead paint encapsulation
DE19537512A1 (de) * 1995-08-18 1997-04-30 Witega Angewandte Werkstoff Forschung Gemeinnuetzige Gmbh Adlershof Mittel zur Oberflächenbehandlung von Asbesten und asbesthaltigen zementgebundenen Abfallstoffen
WO1998013106A1 (fr) * 1996-09-27 1998-04-02 W.R. Grace & Co.-Conn. Composition mousseuse de traitement de materiaux contenant de l'amiante et procede associe
WO2003085064A2 (fr) * 2002-04-04 2003-10-16 Mt2, Llc Traitement de surfaces permettant de stabiliser des metaux lourds

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2610018A1 (fr) * 2011-12-30 2013-07-03 Normalu Dispositif de confinement d'une structure en amiante
FR2985280A1 (fr) * 2011-12-30 2013-07-05 Normalu Dispositif de confinement d'une structure en amiante
JP2018084059A (ja) * 2016-11-22 2018-05-31 新日鐵住金株式会社 防護層を有する鋼製部材、基礎構造物、防護層を有する鋼製部材の製造方法及び基礎構造物の施工方法

Similar Documents

Publication Publication Date Title
KR101566859B1 (ko) 자가치유 성능을 가진 중방식 도장재 및 이를 이용한 도포방법
CA1329068C (fr) Systeme de traitement de surfaces
CN102218389A (zh) 一种金属表面处理方法
WO2005102462A1 (fr) Procede pour appliquer un revetement sur une structure contaminee
JP2006231327A (ja) ブランク表面を一時的に腐食から保護する方法、および一時的に腐食から保護される構成要素
EP2159268B1 (fr) Procédé de décapage d'une couche comprenant une matière dangereuse, d'une surface
JP5400633B2 (ja) 鉄道用レールの温度上昇抑制方法
CN105131831A (zh) 一种石材表面防污涂料及其用于大理石表面防污的使用方法
US10689525B2 (en) Corrosion preventative film
JP2007092387A (ja) 吹付けアスベスト又は石綿含有吹付けロックウールの除去方法
CN106311577B (zh) 高压水除鳞蓄势罐内壁在线除锈防腐的方法
DE69735725T2 (de) Antigraffiti-lackzusammensetzung
CN113817376A (zh) 一种水溶性设备保护膜溶液及其制备方法
KR101928279B1 (ko) 친환경 도장재 조성물 및 그의 시공방법
JP5403348B2 (ja) アスベスト除去方法
KR101225693B1 (ko) 친환경적인 재도장 시공방법
CN111910589A (zh) 渠道钢闸门现场除锈防腐防护结构及除锈防腐方法
WO2001081008A3 (fr) Compositions de revetement protecteur a base de polysaccharides et procedes d'utilisation de ces compositions
KR102689940B1 (ko) 친환경 무용제 난연 내진 도료를 이용한 아파트 및 빌딩의 슬라브, 주차장, 옥상, 배수로 또는 지붕 아스팔트 싱글의 방수 방식 신공법
JPH0768513B2 (ja) 浮遊石綿粉塵等の除去方法
JP2007270513A (ja) 石綿含有成形板の露出面の固定化処理方法
US6767580B2 (en) Method and materials for finished surface protection
CN116475045A (zh) 一种基于铁塔钢结构表面的石墨烯重防腐涂层除锈方法
CA2313375A1 (fr) Methode pour enlever la peinture a l'aide d'un film barriere
US5040925A (en) Method for controlling particulate hazardous material

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

122 Ep: pct application non-entry in european phase