EP0723820A1 - Method for cleaning a stone surface and compress for moistening a surface to be cleaned - Google Patents

Method for cleaning a stone surface and compress for moistening a surface to be cleaned Download PDF

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Publication number
EP0723820A1
EP0723820A1 EP94403015A EP94403015A EP0723820A1 EP 0723820 A1 EP0723820 A1 EP 0723820A1 EP 94403015 A EP94403015 A EP 94403015A EP 94403015 A EP94403015 A EP 94403015A EP 0723820 A1 EP0723820 A1 EP 0723820A1
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EP
European Patent Office
Prior art keywords
compress
layer
cleaned
moistening
cleaning
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
EP94403015A
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German (de)
French (fr)
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EP0723820B1 (en
Inventor
Jean-Marie Fantin
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.)
M LEFEVRE SA
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M LEFEVRE SA
M Lefevre SA
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 to FR9311912A priority Critical patent/FR2710860B1/en
Application filed by M LEFEVRE SA, M Lefevre SA filed Critical M LEFEVRE SA
Priority to DE0723820T priority patent/DE723820T1/en
Priority to DE69414408T priority patent/DE69414408T2/en
Priority to AT94403015T priority patent/ATE172895T1/en
Priority to EP94403015A priority patent/EP0723820B1/en
Priority to ES94403015T priority patent/ES2126088T3/en
Publication of EP0723820A1 publication Critical patent/EP0723820A1/en
Application granted granted Critical
Publication of EP0723820B1 publication Critical patent/EP0723820B1/en
Anticipated expiration legal-status Critical
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/002—Arrangements for cleaning building facades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid

Definitions

  • the present invention relates to a method for cleaning a surface, in particular a stone or concrete surface, of a building or a structure.
  • Another mechanical technique consists in spraying a powdered abrasive, such as for example sand, alumina, chalk or glass, by means of a jet of compressed air. Such a process is also very aggressive for the surface of the stone.
  • a powdered abrasive such as for example sand, alumina, chalk or glass
  • non-mechanical techniques for example by spraying water under variable pressure or a jet of steam at low pressure, or a chemical cleaning process. requiring the application of paint strippers and then rinsing the surface with water or a neutralizing product.
  • the chemical washing and cleaning processes have the drawback of causing water and / or chemicals to penetrate deep into the stone. These phenomena can lead to the formation of colored spots due to the salts and oxides which are present in the stone and which are dissolved by water or chemicals which have penetrated deep.
  • Structural damage can also occur due to bursting of the stone if the outside temperature is sufficiently low. This damage is further amplified if, as it is sometimes the case, a treatment of waterproofing of the facade is carried out after its cleaning, the waterproof layer trapping the water inside the stone practically without any subsequent possibility of evaporation.
  • the object of the present invention is to propose a new cleaning process aimed at maintaining a surface humidity of the surface to be cleaned, which is sufficient to result in the softening of the dirt for a determined time, for example a few days, then in removing the dirt. softened by brushing or compressed air, or any other process.
  • the invention provides a cleaning process characterized in that it consists in applying a humidifying layer to the surface for a determined period of time, then in removing the layer and in cleaning the surface.
  • the invention also provides a compress for moistening a surface of a building or a work of art to be cleaned, in particular of stone, characterized in that it comprises a layer of hydrophilic material capable of being contact with the surface to be cleaned and means for supplying water to the layer.
  • the method of cleaning the external surface 14 of the stones 12 consists in moistening the latter by means of a compress, or poultice 16.
  • the compress 16 is essentially constituted by a layer 18 made of hydrophyle material.
  • the layer 18 is produced by spraying, by means of a spray gun 20, mineral or vegetable fibers 22 according to a technique similar to that of flocking.
  • Fibers 22 are thus projected onto the outer surface 14 by means of a gun 20.
  • a reinforcement frame 24 is drowned in the layer 18 which is for example produced in the form of a reinforcement mesh .
  • Pipes 26 belonging to a water supply network of layer 18 are also drowned in layer 18.
  • the production of the layer 18 continues by spraying the hydrophilic fibers 22 until the thickness of the layer is that illustrated in the right part of the figure and so that the reinforcement 24 and the pipes 26 are embedded in layer 18.
  • the pipes 26 are connected by a pipe 28 to a water supply source (not shown) and the Humidification liquid flow rate of the layer 18 is regulated, for example by a solenoid valve 30 which comprises control means as a function of the humidity level of the layer which is measured by sensors 32 which penetrate into the layer.
  • a solenoid valve 30 which comprises control means as a function of the humidity level of the layer which is measured by sensors 32 which penetrate into the layer.
  • the outer surface 34 of the humidifying layer 18 is covered by an impermeable sheet forming a sheet 36 which makes it possible to limit the losses of moisture by evaporation.
  • the compress 16 also includes a suction pump 38 which is connected to an orifice formed in the cover 36 by a fitting 40 which allows the layer 18 to be placed under vacuum and thus to cause the water contained in the layer 18 to be suctioned and in the surface 14 of the stone, at the end of the humidification cycle of the latter, so as to accelerate the extraction of the moisture contained superficially in the surface 14 and that of the dissolved dirt.
  • a suction pump 38 which is connected to an orifice formed in the cover 36 by a fitting 40 which allows the layer 18 to be placed under vacuum and thus to cause the water contained in the layer 18 to be suctioned and in the surface 14 of the stone, at the end of the humidification cycle of the latter, so as to accelerate the extraction of the moisture contained superficially in the surface 14 and that of the dissolved dirt.
  • the method according to the invention consists, after having moistened the surface 14 of the stones 12 by means of the compress 16 for a determined sufficient time, to remove the compress 16, after having in particular implemented the pump 38, then to complete the operations cleaning by a simple gentle brushing of the surface 14 comprising the softened and dissolved dirt.
  • the compress 16 which has been produced in situ on the wall 10 can be reused after having been cleaned.
  • the invention is not limited to the embodiment of the compress 16 which has just been described, the latter being able to be produced in isolation according to any suitable technique and to be applied against the surface to be cleaned after having been produced.
  • the method according to the invention is particularly advantageous in that it makes it possible to maintain the humidity surface 14 which is just necessary to soften the dirt for the desired time, then to remove the dissolved dirt by a simple gentle brushing.
  • the cullet layer is fully respected while allowing elimination of the infiltration of pollution from the stone facing, such as sulfur dioxides, sulfates, etc.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

The method includes a humidifying layer (18) being applied on the surface (14) over a predetermined time and then removed and the surface proceeded to be cleaned by brushing. The humidifying layer is applied in the form of a compress (16) which is projected onto the surface with a vegetable or mineral fibre support material. There is a reinforcing armature core (24) in the compress. The compress is humidified in order to maintain a constant rate of humidity in the humidifying layer. The rate of humidity in the humidifying layer is measured and the compress is supplied with water when the rate is less than a determined value. The compress has a water supply circuit (26) for supplying water and additives.

Description

La présente invention concerne un procédé de nettoyage d'une surface, notamment d'une surface en pierre ou en béton, d'un bâtiment ou d'un ouvrage d'art.The present invention relates to a method for cleaning a surface, in particular a stone or concrete surface, of a building or a structure.

Les opérations de nettoyage des façades des bâtiments ou des ouvrages d'art en pierre qui sont notamment salies par la pollution atmosphérique ou par d'autres causes, sont souvent difficiles car il est nécessaire de réaliser un compromis entre l'efficacité du nettoyage, le coût de l'opération, et la nécessité de ne pas endommager la surface à nettoyer et donc de faire appel à des procédés non agressifs pour la pierre, notamment lorsqu'il s'agit de monuments historiques.Cleaning operations on the facades of buildings or stone structures which are notably soiled by atmospheric pollution or other causes, are often difficult because it is necessary to strike a compromise between the effectiveness of cleaning, the cost of the operation, and the need not to damage the surface to be cleaned and therefore to use non-aggressive methods for the stone, especially when it comes to historic monuments.

On connait des procédés mécaniques de nettoyage par ponçage qui consistent à ôter la couche superficielle au moyen d'outils tels que des ponceuses électriques qui ont pour inconvénients d'être très agressifs pour la surface à nettoyer qui est irrémédiablement modifiée par les opérations de ponçage.Mechanical cleaning processes by sanding are known which consist in removing the surface layer by means of tools such as electric sanders which have the drawbacks of being very aggressive for the surface to be cleaned which is irreparably modified by the sanding operations.

Une autre technique mécanique consiste à projeter un abrasif en poudre, tel que par exemple du sable, de l'alumine, de la craie ou du verre, au moyen d'un jet d'air comprimé. Un tel procédé est également très agressif pour la surface de la pierre.Another mechanical technique consists in spraying a powdered abrasive, such as for example sand, alumina, chalk or glass, by means of a jet of compressed air. Such a process is also very aggressive for the surface of the stone.

De plus, la disparition partielle ou totale de la couche superficielle de protection naturelle de la pierre, appelée "calcin", qui résulte de l'utilisation de procédés mécaniques de nettoyage, aboutit à une sensibilité accrue des surfaces traitées aux agents de pollution et donc à une augmentation de la fréquence des nettoyages et à une usure accélérée de la pierre.In addition, the partial or total disappearance of the natural protective surface layer of the stone, called "cullet", which results from the use of mechanical cleaning processes, results in increased sensitivity of the treated surfaces to pollutants and therefore an increase in the frequency of cleaning and accelerated wear of the stone.

Il est également possible de faire appel à des techniques non mécaniques, par exemple par aspersion d'eau sous pression variable ou d'un jet de vapeur à basse pression, ou à un procédé de nettoyage chimique nécessitant d'appliquer des produits décapants puis de rincer la surface à l'eau ou par un produit neutralisant.It is also possible to use non-mechanical techniques, for example by spraying water under variable pressure or a jet of steam at low pressure, or a chemical cleaning process. requiring the application of paint strippers and then rinsing the surface with water or a neutralizing product.

Les procédés de lavage et de nettoyage par voie chimique ont pour inconvénient de provoquer une pénétration d'eau et/ou de produits chimiques en profondeur dans la pierre. Ces phénomènes peuvent aboutir à la formation de taches de couleur dûes aux sels et aux oxydes qui sont présents dans la pierre et qui sont dissouts par l'eau ou les produits chimiques qui ont pénétré en profondeur.The chemical washing and cleaning processes have the drawback of causing water and / or chemicals to penetrate deep into the stone. These phenomena can lead to the formation of colored spots due to the salts and oxides which are present in the stone and which are dissolved by water or chemicals which have penetrated deep.

Il peut également se produire des dommages structurels par éclatement de la pierre si la température extérieure est suffisamment basse. Ces dégâts sont encore amplifiés si, comme c'est parfois le cas, un traitement d'imperméabilisation de la façade est effectué après son nettoyage, la couche imperméable piégeant l'eau à l'intérieur de la pierre pratiquement sans aucune possibilité ultérieure d'évaporation.Structural damage can also occur due to bursting of the stone if the outside temperature is sufficiently low. This damage is further amplified if, as it is sometimes the case, a treatment of waterproofing of the facade is carried out after its cleaning, the waterproof layer trapping the water inside the stone practically without any subsequent possibility of evaporation.

La présente invention a pour but de proposer un nouveau procédé de nettoyage visant à maintenir une humidité superficielle de la surface à nettoyer, qui soit suffisante pour aboutir au ramollissement des salissures pendant un temps déterminé, par exemple de quelques jours, puis à éliminer les salissures ramollies par un brossage ou à l'air comprimé, ou tout autre procédé.The object of the present invention is to propose a new cleaning process aimed at maintaining a surface humidity of the surface to be cleaned, which is sufficient to result in the softening of the dirt for a determined time, for example a few days, then in removing the dirt. softened by brushing or compressed air, or any other process.

Dans ce but, l'invention propose un procédé de nettoyage caractérisé en ce qu'il consiste à appliquer sur la surface une couche humidificatrice pendant une durée déterminée puis à ôter la couche et à procéder à un nettoyage de la surface.To this end, the invention provides a cleaning process characterized in that it consists in applying a humidifying layer to the surface for a determined period of time, then in removing the layer and in cleaning the surface.

Selon d'autres caractéristiques de l'invention :

  • la couche humidificatrice est appliquée sous la forme d'une compresse en matériau hydrophyle ;
  • la compresse est réalisée par projection sur la surface d'un matériau support sous la forme de fibres, notamment végétales ou minérales ;
  • le procédé consiste à humidifier la compresse pour maintenir un taux constant d'humidité dans la couche;
  • le procédé consiste à mesurer le taux d'humidité de la couche humidificatrice et à alimenter la compresse en eau lorsque le taux est inférieur à une valeur de seuil déterminée ;
  • le procédé consiste à noyer une armature de renfort dans la compresse lors de sa réalisation par projection ;
  • la compresse peut comporter des moyens d'alimentation en eau et en adjuvants ;
  • la compresse peut comporter un circuit d'alimentation en eau;
  • le circuit d'alimentation en eau est noyé dans la compresse lors de sa réalisation par projection ;
  • la compresse peut comporter une face extérieure étanche;
  • la compresse peut comporter des moyens d'aspiration du liquide contenu dans la compresse et de mise en dépression de la compresse pour aspirer le liquide qui imprègne la surface à nettoyer ;
  • le procédé consiste à récupérer la compresse, après humidification de la zone à nettoyer, puis à procéder à son lavage en vue d'une nouvelle utilisation.
According to other characteristics of the invention:
  • the moistening layer is applied in the form of a compress made of hydrophyle material;
  • the compress is produced by spraying onto the surface of a support material in the form of fibers, in particular vegetable or mineral;
  • the method includes moistening the compress to maintain a constant level of moisture in the diaper;
  • the method consists in measuring the humidity level of the humidifying layer and in supplying the compress with water when the humidity is lower than a determined threshold value;
  • the method consists in embedding a reinforcing reinforcement in the compress during its production by projection;
  • the compress may include means for supplying water and additives;
  • the compress may include a water supply circuit;
  • the water supply circuit is embedded in the compress during its production by projection;
  • the compress may have a sealed outer face;
  • the compress may include means for sucking the liquid contained in the compress and for depressurizing the compress to suck the liquid which permeates the surface to be cleaned;
  • the process consists in recovering the compress, after moistening the area to be cleaned, then in washing it for a new use.

L'invention propose également une compresse pour l'humidification d'une surface d'un bâtiment ou d'un ouvrage d'art à nettoyer, notamment en pierre, caractérisée en ce qu'elle comporte une couche en matériau hydrophyle susceptible d'être mise en contact avec la surface à nettoyer et des moyens d'alimentation en eau de la couche.The invention also provides a compress for moistening a surface of a building or a work of art to be cleaned, in particular of stone, characterized in that it comprises a layer of hydrophilic material capable of being contact with the surface to be cleaned and means for supplying water to the layer.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre pour la compréhension de laquelle on se reportera au dessin annexé dont la figure unique est une vue schématique en perspective d'un mur en pierre dont on réalise le nettoyage selon un exemple de réalisation d'un procédé conforme à l'invention.Other characteristics and advantages of the invention will appear on reading the detailed description which follows for the understanding of which one refer to the accompanying drawing, the single figure is a schematic perspective view of a stone wall which is cleaned according to an exemplary embodiment of a process according to the invention.

On a représenté sur la figure un mur 10 en pierres 12 dont on désire nettoyer la surface extérieure 14.There is shown in the figure a stone wall 10 12 whose external surface 14 is to be cleaned.

Conformément à l'invention, le procédé de nettoyage de la surface extérieure 14 des pierres 12 consiste à humidifier cette dernière au moyen d'une compresse, ou cataplasme 16.According to the invention, the method of cleaning the external surface 14 of the stones 12 consists in moistening the latter by means of a compress, or poultice 16.

Selon un aspect de l'invention, la compresse 16 est essentiellement constituée par une couche 18 en matériau hydrophyle.According to one aspect of the invention, the compress 16 is essentially constituted by a layer 18 made of hydrophyle material.

Selon une caractéristique du procédé conforme aux enseignements de l'invention, la couche 18 est réalisée par projection, au moyen d'un pistolet de projection 20, de fibres minérales ou végétales 22 selon une technique similaire à celle du flocage.According to a characteristic of the process according to the teachings of the invention, the layer 18 is produced by spraying, by means of a spray gun 20, mineral or vegetable fibers 22 according to a technique similar to that of flocking.

On projette ainsi des fibres 22 sur la surface extérieure 14 au moyen d'un pistolet 20.Fibers 22 are thus projected onto the outer surface 14 by means of a gun 20.

Lors de la réalisation de la couche 18, dont l'épaisseur est volontairement exagérée sur la figure afin de faciliter la représentation, on noie dans la couche 18 une armature de renfort 24 qui est par exemple réalisée sous la forme d'un treillis de renfort.During the production of the layer 18, the thickness of which is deliberately exaggerated in the figure in order to facilitate the representation, a reinforcement frame 24 is drowned in the layer 18 which is for example produced in the form of a reinforcement mesh .

On noie également dans la couche 18 des tuyaux 26 appartenant à un réseau d'alimentation en eau de la couche 18.Pipes 26 belonging to a water supply network of layer 18 are also drowned in layer 18.

La réalisation de la couche 18 se poursuit par projection des fibres hydrophyles 22 jusqu'à ce que l'épaisseur de la couche soit celle illustrée à la partie de droite de la figure et de façon que l'armature 24 et les tuyaux 26 soient noyés dans la couche 18.The production of the layer 18 continues by spraying the hydrophilic fibers 22 until the thickness of the layer is that illustrated in the right part of the figure and so that the reinforcement 24 and the pipes 26 are embedded in layer 18.

Les tuyaux 26 sont reliés par une conduite 28 à une source d'alimentation en eau (non représentée) et le débit de liquide d'humidification de la couche 18 est régulé, par exemple par une électrovanne 30 qui comporte des moyens de commande en fonction du taux d'humidité de la couche qui est mesuré par des capteurs 32 qui pénètrent dans la couche.The pipes 26 are connected by a pipe 28 to a water supply source (not shown) and the Humidification liquid flow rate of the layer 18 is regulated, for example by a solenoid valve 30 which comprises control means as a function of the humidity level of the layer which is measured by sensors 32 which penetrate into the layer.

Selon une autre caractéristique de l'invention, la surface extérieure 34 de la couche humidificatrice 18 est recouverte par une feuille imperméable formant bâche 36 qui permet de limiter les pertes d'humidité par évaporation.According to another characteristic of the invention, the outer surface 34 of the humidifying layer 18 is covered by an impermeable sheet forming a sheet 36 which makes it possible to limit the losses of moisture by evaporation.

La compresse 16 comporte également une pompe d'aspiration 38 qui est reliée à un orifice formé dans la bâche 36 par un raccord 40 qui permet de mettre la couche 18 sous dépression et de provoquer ainsi une aspiration de l'eau contenue dans la couche 18 et dans la surface 14 de la pierre, à la fin du cycle d'humidification de cette dernière, de façon à accélérer l'extraction de l'humidité contenue superficiellement dans la surface 14 et celle des salissures dissoutes.The compress 16 also includes a suction pump 38 which is connected to an orifice formed in the cover 36 by a fitting 40 which allows the layer 18 to be placed under vacuum and thus to cause the water contained in the layer 18 to be suctioned and in the surface 14 of the stone, at the end of the humidification cycle of the latter, so as to accelerate the extraction of the moisture contained superficially in the surface 14 and that of the dissolved dirt.

Le procédé selon l'invention consiste, après avoir humidifier la surface 14 des pierres 12 au moyen de la compresse 16 pendant une durée déterminée suffisante, à ôter la compresse 16, après avoir notamment mis en oeuvre la pompe 38, puis à terminer les opérations de nettoyage par un simple brossage doux de la surface 14 comportant les salissures ramollies et dissoutes.The method according to the invention consists, after having moistened the surface 14 of the stones 12 by means of the compress 16 for a determined sufficient time, to remove the compress 16, after having in particular implemented the pump 38, then to complete the operations cleaning by a simple gentle brushing of the surface 14 comprising the softened and dissolved dirt.

La compresse 16 qui a été réalisée in-situ sur le mur 10 peut être réutilisée après avoir été nettoyée.The compress 16 which has been produced in situ on the wall 10 can be reused after having been cleaned.

L'invention n'est pas limitée au mode de réalisation de la compresse 16 qui vient d'être décrit, celle-ci pouvant être fabriquée isolément selon toute technique appropriée et être appliquée contre la surface à nettoyer après avoir été fabriquée.The invention is not limited to the embodiment of the compress 16 which has just been described, the latter being able to be produced in isolation according to any suitable technique and to be applied against the surface to be cleaned after having been produced.

Le procédé selon l'invention est particulièrement avantageux en ce qu'il permet de maintenir l'humidité superficielle de la surface 14 qui est juste nécessaire au ramollissement des salissures pendant le temps désiré, puis à éliminer les salissures dissoutes par un simple brossage doux.The method according to the invention is particularly advantageous in that it makes it possible to maintain the humidity surface 14 which is just necessary to soften the dirt for the desired time, then to remove the dissolved dirt by a simple gentle brushing.

On évite ainsi l'imprégnation de la pierre en profondeur ainsi que toutes les conséquences relatives aux infiltrations d'eau au coeur des maçonneries, notamment par les joints et les fractures.This avoids the impregnation of the stone in depth as well as all the consequences relating to water infiltration in the heart of the masonry, in particular by joints and fractures.

La couche de calcin est totalement respectée tout en permettant une élimination du parement de la pierre des résidus infiltrés de pollution, tels que les dioxydes de soufre, les sulfates, etc.The cullet layer is fully respected while allowing elimination of the infiltration of pollution from the stone facing, such as sulfur dioxides, sulfates, etc.

Claims (13)

Procédé de nettoyage d'une surface (14), notamment en pierre (12), d'un bâtiment ou d'un ouvrage d'art (10), caractérisé en ce qu'il consiste à appliquer sur la surface (14) une couche humidificatrice (18) pendant une durée prédéterminée, puis à ôter la couche et à procéder à un nettoyage de la surface (14).Method for cleaning a surface (14), in particular stone (12), of a building or a structure (10), characterized in that it consists in applying to the surface (14) a humidifying layer (18) for a predetermined period, then removing the layer and cleaning the surface (14). Procédé selon la revendication 1, caractérisé en ce que la couche humidificatrice (18) est appliquée sous la forme d'une compresse en matériau hydrophyle (16).Method according to claim 1, characterized in that the moistening layer (18) is applied in the form of a compress made of hydrophyle material (16). Procédé selon la revendication 2, caractérisé en ce que la compresse (16) est réalisée par projection sur la surface (14) d'un matériau support (18) sous la forme de fibres, notamment végétales ou minérales.Method according to claim 2, characterized in that the compress (16) is produced by spraying onto the surface (14) a support material (18) in the form of fibers, in particular vegetable or mineral. Procédé selon l'une des revendications 2 ou 3, caractérisé en ce qu'il consiste à humidifier la compresse (16) pour maintenir un taux constant d'humidité dans la couche humidificatrice.Method according to one of claims 2 or 3, characterized in that it consists in moistening the compress (16) to maintain a constant rate of humidity in the humidifying layer. Procédé selon la revendication 4, caractérisé en ce qu'il consiste à mesurer le taux d'humidité de la couche humidificatrice et à alimenter la compresse (16) en eau lorsque le taux est inférieur à une valeur de seuil déterminée.Method according to claim 4, characterized in that it consists in measuring the humidity level of the humidifying layer and in supplying the compress (16) with water when the rate is lower than a determined threshold value. Procédé selon la revendication 3, caractérisé en ce qu'il consiste à noyer une armature de renfort (24) dans la compresse (16) lors de sa réalisation par projection.Method according to claim 3, characterized in that it consists in embedding a reinforcing reinforcement (24) in the compress (16) during its production by projection. Procédé selon l'une des revendications 4 ou 5, caractérisé en ce que la compresse comporte des moyens (26, 28, 30) d'alimentation en eau et en adjuvants.Method according to one of claims 4 or 5, characterized in that the compress comprises means (26, 28, 30) for supplying water and additives. Procédé selon la revendication 7, caractérisé en ce que la compresse (16) comporte un circuit (26) d'alimentation en eau.Method according to claim 7, characterized in that the compress (16) comprises a circuit (26) for supplying water. Procédé selon la revendication 7 prise en combinaison avec la revendication 3, caractérisé en ce que le circuit d'alimentation en eau (26) est noyé dans la compresse (16) lors de sa réalisation par projection.Method according to claim 7 taken in combination with claim 3, characterized in that the water supply circuit (26) is embedded in the compress (16) during its production by projection. Procédé selon l'une quelconque des revendications 2 à 9, caractérisé en ce que la compresse comporte une face extérieure étanche (36).Method according to any one of claims 2 to 9, characterized in that the compress has a sealed outer face (36). Procédé selon la revendication 10, caractérisé en ce que la compresse comporte des moyens (38, 40) d'aspiration du liquide contenu dans la compresse (16) et de mise en dépression de la compresse pour aspirer le liquide qui imprègne la surface (14) à nettoyer.Method according to claim 10, characterized in that the compress comprises means (38, 40) for sucking the liquid contained in the compress (16) and for depressurizing the compress to suck the liquid which permeates the surface (14 ) to clean. Procédé selon l'une quelconque des revendications 2 à 11, caractérisé en ce qu'il consiste à récupérer la compresse (16, 18), après humidification de la zone à nettoyer, puis à procéder à son lavage en vue d'une nouvelle utilisation.Method according to any one of Claims 2 to 11, characterized in that it consists in recovering the compress (16, 18), after moistening the area to be cleaned, then in washing it for a new use. . Compresse pour l'humidification d'une surface (14) d'un bâtiment ou d'un ouvrage d'art à nettoyer, notamment en pierre (12), caractérisée en ce qu'elle comporte une couche (18) en matériau hydrophyle susceptible d'être mise en contact avec la surface à nettoyer (14) et des moyens (26, 28, 30) d'alimentation en eau de la couche humidificatrice.Compress for moistening a surface (14) of a building or a work of art to be cleaned, in particular stone (12), characterized in that it comprises a layer (18) of hydrophilic material capable to be brought into contact with the surface to be cleaned (14) and means (26, 28, 30) for supplying water to the humidifying layer.
EP94403015A 1993-10-06 1994-12-26 Method for cleaning a stone surface and compress for moistening a surface to be cleaned Expired - Lifetime EP0723820B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR9311912A FR2710860B1 (en) 1993-10-06 1993-10-06 Method for cleaning a stone surface and compress for moistening a surface to be cleaned.
DE0723820T DE723820T1 (en) 1993-10-06 1994-12-26 Stone cleaning process and compress for moistening a surface to be cleaned
DE69414408T DE69414408T2 (en) 1993-10-06 1994-12-26 Stone cleaning process and compress for moistening a surface to be cleaned
AT94403015T ATE172895T1 (en) 1993-10-06 1994-12-26 STONE CLEANING PROCESS AND COMPRESS FOR MOISTURIZING A SURFACE TO BE CLEANED
EP94403015A EP0723820B1 (en) 1993-10-06 1994-12-26 Method for cleaning a stone surface and compress for moistening a surface to be cleaned
ES94403015T ES2126088T3 (en) 1993-10-06 1994-12-26 CLEANING PROCEDURE OF A STONE AND COMPRESSE SURFACE TO HUMIDIFY THE SURFACE TO BE CLEANED.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9311912A FR2710860B1 (en) 1993-10-06 1993-10-06 Method for cleaning a stone surface and compress for moistening a surface to be cleaned.
EP94403015A EP0723820B1 (en) 1993-10-06 1994-12-26 Method for cleaning a stone surface and compress for moistening a surface to be cleaned

Publications (2)

Publication Number Publication Date
EP0723820A1 true EP0723820A1 (en) 1996-07-31
EP0723820B1 EP0723820B1 (en) 1998-11-04

Family

ID=26137567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94403015A Expired - Lifetime EP0723820B1 (en) 1993-10-06 1994-12-26 Method for cleaning a stone surface and compress for moistening a surface to be cleaned

Country Status (5)

Country Link
EP (1) EP0723820B1 (en)
AT (1) ATE172895T1 (en)
DE (2) DE69414408T2 (en)
ES (1) ES2126088T3 (en)
FR (1) FR2710860B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115726599A (en) * 2022-12-06 2023-03-03 江苏海洋大学 Method for additionally arranging masonry wall constructional column by embedding fiber rod

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772409B1 (en) 1997-12-15 2000-03-10 Lefevre Sa M METHOD FOR DESALINATION OF FACADES
FR2786517B1 (en) * 1998-11-26 2003-06-20 Lefevre Sa M METHOD AND DEVICE FOR CLEANING BY WATER SHEATH
CN110965800B (en) * 2019-12-17 2021-10-22 浙江东冶建设有限公司 Construction process for treating stone dry-hanging wall surface of building outer wall

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2006256A (en) * 1977-10-04 1979-05-02 Secr Education & Science Cleaning stone
EP0268880A2 (en) * 1986-11-03 1988-06-01 LARAC S.p.A. Cleaning pad for the removal of sulfates from frescoed surfaces
FR2674890A1 (en) * 1991-04-08 1992-10-09 Calmard Regis Method for cleaning a masonry surface, and the means for carrying out this method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2006256A (en) * 1977-10-04 1979-05-02 Secr Education & Science Cleaning stone
EP0268880A2 (en) * 1986-11-03 1988-06-01 LARAC S.p.A. Cleaning pad for the removal of sulfates from frescoed surfaces
FR2674890A1 (en) * 1991-04-08 1992-10-09 Calmard Regis Method for cleaning a masonry surface, and the means for carrying out this method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115726599A (en) * 2022-12-06 2023-03-03 江苏海洋大学 Method for additionally arranging masonry wall constructional column by embedding fiber rod
CN115726599B (en) * 2022-12-06 2023-09-08 江苏海洋大学 Method for adding masonry wall constructional column by using embedded fiber rod

Also Published As

Publication number Publication date
ATE172895T1 (en) 1998-11-15
FR2710860B1 (en) 1995-12-15
DE69414408T2 (en) 1999-05-20
FR2710860A1 (en) 1995-04-14
EP0723820B1 (en) 1998-11-04
ES2126088T3 (en) 1999-03-16
DE69414408D1 (en) 1998-12-10
DE723820T1 (en) 1997-03-13

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