EP0420747B1 - Bituminous waterproofing laminate adapted to receive a layer of liquid asphalt - Google Patents

Bituminous waterproofing laminate adapted to receive a layer of liquid asphalt Download PDF

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Publication number
EP0420747B1
EP0420747B1 EP90402644A EP90402644A EP0420747B1 EP 0420747 B1 EP0420747 B1 EP 0420747B1 EP 90402644 A EP90402644 A EP 90402644A EP 90402644 A EP90402644 A EP 90402644A EP 0420747 B1 EP0420747 B1 EP 0420747B1
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EP
European Patent Office
Prior art keywords
asphalt
layer
sheet
bituminous
bitumen
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Expired - Lifetime
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EP90402644A
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German (de)
French (fr)
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EP0420747A3 (en
EP0420747A2 (en
Inventor
Raymond Rubio
Thierry De Fay
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SOCIETE DE PAVAGE ET DES ASPHALTES DE PARIS,SOCIET
Original Assignee
Pavage Et Des Asphaltes De Paris SpA P A SA Ste
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Priority to AT90402644T priority Critical patent/ATE89887T1/en
Publication of EP0420747A2 publication Critical patent/EP0420747A2/en
Publication of EP0420747A3 publication Critical patent/EP0420747A3/en
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Publication of EP0420747B1 publication Critical patent/EP0420747B1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D7/00—Roof covering exclusively consisting of sealing masses applied in situ; Gravelling of flat roofs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D11/00—Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00; Roof covering in ways not provided for by groups E04D1/00 - E04D9/00, e.g. built-up roofs, elevated load-supporting roof coverings
    • E04D11/02—Build-up roofs, i.e. consisting of two or more layers bonded together in situ, at least one of the layers being of watertight composition
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/10—Roof covering by making use of flexible material, e.g. supplied in roll form by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen

Definitions

  • the invention relates to a method of implementing a bituminous waterproofing sheet intended to receive a layer of poured asphalt, with the aim of sealing in particular of flat roofs, civil engineering structures, floors. parking lots, retention basins, etc.
  • FR-A-2 580 990 Another proposed solution (FR-A-2 580 990) consists in incorporating into the bituminous sheet a woven or non-woven screen impermeable or almost impervious to the underlying bitumen. In practice, it is then necessary to choose, for the bituminous composition of the sheet, a bitumen of higher density and softening point than the bitumens normally used and to use a screen of heavy grammage (50 to 500 g / m2). Tests show that this is not enough to prevent bitumen rising through the asphalt layer subsequently deposited, and the product is expensive.
  • a fabric of thermoplastic thread melting at a temperature below about 200 ° C. is added to a bituminous sheet and is intended to come into direct contact with the surface to be protected.
  • the invention makes it possible to solve the problem by providing a method of implementing a bituminous waterproofing sheet intended to receive a layer of poured asphalt and consisting of a reinforcement impregnated with a bitumen modified with fillers and polymers. and comprising a fusible layer of material, characterized in that a meltable material is used for the fusible layer at a temperature below the pouring temperature of the particular asphalt used, the bituminous sheet is put in place so that said fusible layer constitutes the face on which the layer is poured of asphalt and sufficient melt heat is absorbed by said fusible layer so that the melting of the underlying bitumen is thereby prevented.
  • the term “fusible layer” means a layer whose latent heat characteristics of change of state associated with physical characteristics (grammages, thicknesses, etc.) allow the total or almost total fusion of the layer, with absorption of heat. It is this absorption of heat which will prevent the bituminous sheet from going up in temperature too much and the bitumen from liquefying.
  • the asphalt is poured at temperatures of the order of 200 to 240 ° C, depending on the exact composition of the asphalt used but is in any case less than 260 ° C which is the maximum temperature of the usual tests. In the screens used in the prior art, either the material used, and this is particularly the case with glass veils, has a melting point significantly higher than the pouring temperature of the asphalt, or the grammage of point product. equivalent melting used (50 to 500 g / m2) allows at most only a partial softening of the material which continues to transmit heat to the lower layer.
  • the fusible material used must have a sufficient latent heat of change of state and be compatible with the bituminous sheet and the asphalt, and a plastic material in the form of a nonwoven with a grammage of 20 to 60 g / m2 will advantageously be used. , preferably from 20 to 40 g / m2. Good results are obtained with polyesters, which in particular give very good adhesion between the bituminous sheet and the asphalt subsequently poured. It will also be noted that polyethylenes in general are not suitable since their latent heat of change of state is not sufficient. The specialist will determine by appropriate tests whether the latent heat of a given product is sufficient for use in a given context, depending on the particular bitumen and asphalt.
  • a bituminous sheet 1 is prepared by impregnating a reinforcement 2, for example a 100 g / m2 glass veil, using a bituminous composition 3, optionally a bitumen composition modified by polymers (SBS, APP or polypropylene commonly used in the field, for example one of those available on the market. It is not necessary to modify the properties of the commercial compositions, with the advantages which flow therefrom.
  • the reinforcement 2 will be located in the lower part of the finished bituminous sheet and has the role of giving the sheet a certain strength during handling and implementation.
  • the bituminous sheet After impregnation of the reinforcement, the bituminous sheet is calendered and receives a layer 4 of a fusible material in the temperature range of asphalt casting.
  • the nature and the quantity of this meltable material are determined so that it undergoes a total or almost total melting during the pouring of hot asphalt. This fusion taking place with absorption of heat due to the change of state of the material, part of the heat given off by the asphalt is thus absorbed without raising the temperature and the underlying bitumen is not brought to a sufficient temperature. so that it can go up through the layer of asphalt that we just deposited.
  • a nonwoven of fusible material weighing 20 to 60 g / m2, preferably 20 to 40 g / m2, will be used for this purpose. The nonwoven form is used for practical industrial manufacturing reasons but other techniques of applying suitable material could be used. Polyester is a perfectly suitable material, giving in addition to excellent adhesion between the bituminous sheet and the asphalt layer.
  • the thickness of the strip is reduced on the two edges of the strip, on one side on the face upper (6) and on the other side on the lower face (7) so that overlapping two adjacent strips, it does not form excess thickness ( Figure 2).
  • This reduction in thickness can be done during calendering or by removing material from the calendered sheet.
  • FIG. 3 schematically represents the use of the bituminous sheet according to the invention, this sheet 1 being placed with or without fixing on the support 8 to be coated, for example a concrete floor, then a layer of asphalt 9 is poured onto sheet 1.
  • the underside 5 of the sheet 1 comprises a waterproof sheet, a dispersion of mineral particles (obtained by sanding or sanding for example), etc., in order to allow a pose with independence, semi-independence or total adhesion.
  • the main advantages of the process according to the invention is that it makes it possible to obtain all the conventional advantages of two-layer sealing systems. consisting of a bituminous screed or a bituminous sheet covered with a layer of asphalt.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Road Paving Structures (AREA)
  • Revetment (AREA)
  • Sealing Material Composition (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

Bituminous sealing sheet intended to receive a layer of cast asphalt, consisting of a reinforcement impregnated with a bitumen modified with fillers and polymers, characterised in that the face onto which the layer of asphalt is to be cast comprises a fusible layer of a material melting at a temperature which is lower than the casting temperature of the asphalt while absorbing a sufficient part of this heat of casting to prevent the melting of the underlying bitumen. A fusible layer consisting of a nonwoven of 20 to 60 g/m<2> made of plastic and more particularly of polyester is advantageously employed.

Description

L'invention concerne un procédé de mise en oeuvre d' une feuille bitumineuse d'étanchéité destinée à recevoir une couche d'asphalte coulé, dans le but de réaliser l'étanchéité notamment de toitures terrasses, d'ouvrages d'art, de planchers de parkings, de bassins de rétention, etc.The invention relates to a method of implementing a bituminous waterproofing sheet intended to receive a layer of poured asphalt, with the aim of sealing in particular of flat roofs, civil engineering structures, floors. parking lots, retention basins, etc.

Les revêtements d'étanchéité dits "bicouche" sont de deux types

  • l'un obtenu par deux coulées successives d'asphalte, la première d'asphalte pur et la seconde d'asphalte contenant comme additifs du sable et des gravillons;
  • l'autre obtenu par utilisation d'une feuille souple bitumineuse qui se compose d'une armature (généralement un voile de verre) imprégnée d'un mélange bitumineux (composé de bitume, d'une ou de charges et d'un ou de polymères modificateurs) et qui est posée, avec ou sans fixation, sur la surface à revêtir, avant qu'y soit coulée une couche d'asphalte. Cet asphalte est constitué d'un mélange de bitume, de charges, de poudre de minerai d'asphalte, de granulats minéraux (sables et graviers) et éventuellement de polymères. Un des inconvénients de cette solution réside dans le fait que, lors de la coulée à chaud de l'asphalte, le bitume de la composition bitumineuse de la feuille souple fond et, du fait de sa plus faible densité, a tendance à remonter à travers la couche d'asphalte et peut entraîner la formation de points faibles. Ces remontées sont visibles en surface sous forme de taches et de pustules. Pour éviter cet inconvénient, on place généralement sur la surface de la feuille bitumineuse une feuille étanche soit métallique (par exemple feuille d'aluminium) soit en matière plastique (par exemple film de polyéthylène). Cette feuille étanche peut être posée sur le chantier ou intégrée à la feuille bitumineuse lors de la fabrication de celle-ci. Dans les deux cas, le coût est augmenté et il se pose des problèmes d'adhérence en plus des risques de déchirures de la feuille étanche.
Two types of waterproofing coatings
  • one obtained by two successive flows of asphalt, the first of pure asphalt and the second of asphalt containing as additives sand and gravel;
  • the other obtained by using a flexible bituminous sheet which consists of a reinforcement (generally a glass veil) impregnated with a bituminous mixture (composed of bitumen, one or more fillers and one or more polymers modifiers) and which is laid, with or without fixing, on the surface to be coated, before a layer of asphalt is poured into it. This asphalt consists of a mixture of bitumen, fillers, asphalt ore powder, mineral aggregates (sand and gravel) and possibly polymers. One of the drawbacks of this solution lies in the fact that, during the hot pouring of the asphalt, the bitumen of the bituminous composition of the flexible sheet melts and, because of its lower density, tends to rise through the asphalt layer and can cause weak spots to form. These lifts are visible on the surface in the form of spots and pustules. To avoid this drawback, a waterproof sheet is generally placed on the surface of the bituminous sheet. either metallic (eg aluminum foil) or plastic (eg polyethylene film). This waterproof sheet can be placed on the site or integrated into the bituminous sheet during its manufacture. In both cases, the cost is increased and there are adhesion problems in addition to the risks of tearing of the waterproof sheet.

Une autre solution proposée (FR-A-2 580 990) consiste à incorporer à la feuille bitumineuse un écran tissé ou non-tissé impermeable ou presque au bitume sous-jacent. En pratique, il faut alors choisir, pour la composition bitumineuse de la feuille, un bitume de densité et de point de ramollissement plus élevés que les bitumes normalement employés et utiliser un écran de grammage important (50 à 500 g/m²). Des essais montrent que cela n'est pas suffisant pour empêcher les remontées de bitume au travers de la couche d'asphalte ultérieurement déposée, et le produit est coûteux.Another proposed solution (FR-A-2 580 990) consists in incorporating into the bituminous sheet a woven or non-woven screen impermeable or almost impervious to the underlying bitumen. In practice, it is then necessary to choose, for the bituminous composition of the sheet, a bitumen of higher density and softening point than the bitumens normally used and to use a screen of heavy grammage (50 to 500 g / m²). Tests show that this is not enough to prevent bitumen rising through the asphalt layer subsequently deposited, and the product is expensive.

Selon FR-A-2 495 664, un tissu en fil thermoplastique fondant à une température inférieure à environ 200°C est adjoint à une feuille bitumineuse et est destiné à venir en contact direct avec la surface à protéger.According to FR-A-2 495 664, a fabric of thermoplastic thread melting at a temperature below about 200 ° C. is added to a bituminous sheet and is intended to come into direct contact with the surface to be protected.

L'invention permet de résoudre le problème en fournissant procédé de mise en oeuvre d'une feuille bitumineuse d'étanchéité destinée à recevoir une couche d'asphalte coulé et constitué d'une armature imprégnée d'un bitume modifié par des charges et des polymères et comportant une couche fusible de matériau, caractérisé en ce
qu'on utilise pour la couche fusible un matériau fondant à une température inférieure à la température de coulée de l'asphalte particulier utilisé, on met la feuille bitumineuse en place de telle sorte que ladite couche fusible constitue la face sur laquelle on coule la couche d'asphalte et on fait absorber par ladite couche fusible une part suffisante de la chaleur de coulée pour que la fusion du bitume sous-jacent s'en trouve empêchée.The invention makes it possible to solve the problem by providing a method of implementing a bituminous waterproofing sheet intended to receive a layer of poured asphalt and consisting of a reinforcement impregnated with a bitumen modified with fillers and polymers. and comprising a fusible layer of material, characterized in
that a meltable material is used for the fusible layer at a temperature below the pouring temperature of the particular asphalt used, the bituminous sheet is put in place so that said fusible layer constitutes the face on which the layer is poured of asphalt and sufficient melt heat is absorbed by said fusible layer so that the melting of the underlying bitumen is thereby prevented.

Par couche fusible, on entend une couche dont les caractéristiques de chaleur latente de changement d'état associées à des caractéristiques physiques (grammages, épaisseurs, etc ...) permettent la fusion totale ou quasi totale de la couche, avec absorption de chaleur. C'est cette absorption de chaleur qui empêchera la feuille bitumineuse de trop monter en température et le bitume de se liquéfier. La coulée de l'asphalte se fait à des températures de l'ordre de 200 à 240 °C, en fonction de la composition exacte de l'asphalte utilisé mais est en tous les cas inférieure à 260°C qui est la température maximale des essais usuels. Dans les écrans utilisés dans la technique antérieure, soit le matériau utilisé, et c'est le cas notamment des voiles de verre, a un point de fusion nettement supérieur à la température de coulée de l'asphalte, soit le grammage de produit de point de fusion équivalent utilisé (50 à 500 g/m²) n'autorise au plus qu'un ramollissement partiel du matériau qui continue à transmettre la chaleur à la couche inférieure.The term “fusible layer” means a layer whose latent heat characteristics of change of state associated with physical characteristics (grammages, thicknesses, etc.) allow the total or almost total fusion of the layer, with absorption of heat. It is this absorption of heat which will prevent the bituminous sheet from going up in temperature too much and the bitumen from liquefying. The asphalt is poured at temperatures of the order of 200 to 240 ° C, depending on the exact composition of the asphalt used but is in any case less than 260 ° C which is the maximum temperature of the usual tests. In the screens used in the prior art, either the material used, and this is particularly the case with glass veils, has a melting point significantly higher than the pouring temperature of the asphalt, or the grammage of point product. equivalent melting used (50 to 500 g / m²) allows at most only a partial softening of the material which continues to transmit heat to the lower layer.

Le matériau fusible utilisé doit avoir une chaleur latente de changement d'état suffisante et être compatible avec la feuille bitumineuse et l'asphalte, et on emploiera avantageusement une matière plastique sous forme de non-tissé avec un grammage de 20 à 60 g/m², de préférence de 20 à 40 g/m². On obtient de bons résultats avec les polyesters, qui donnent en particulier une très bonne adhérence entre la feuille bitumineuse et l'asphalte coulé ultérieurement. On notera par ailleurs que les polyéthylènes de manière générale ne conviennent pas car leur chaleur latente de changement d'état n'est pas suffisante. Le spécialiste déterminera par des essais appropriés si la chaleur latente d'un produit donné est suffisante pour une utilisation dans un contexte donné, en fonction du bitume et de l'asphalte particuliers.The fusible material used must have a sufficient latent heat of change of state and be compatible with the bituminous sheet and the asphalt, and a plastic material in the form of a nonwoven with a grammage of 20 to 60 g / m² will advantageously be used. , preferably from 20 to 40 g / m². Good results are obtained with polyesters, which in particular give very good adhesion between the bituminous sheet and the asphalt subsequently poured. It will also be noted that polyethylenes in general are not suitable since their latent heat of change of state is not sufficient. The specialist will determine by appropriate tests whether the latent heat of a given product is sufficient for use in a given context, depending on the particular bitumen and asphalt.

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée suivante faite en référence au dessin annexé dans lequel:

  • la figure 1 est une représentation schématique en coupe de la feuille bitumineuse mise en oeuvre selon la présente invention,
  • la figure 2 est une représentation schématique en coupe d'un détail des bords de la feuille bitumineuse, et
  • la figure 3 est une représentation schématique en coupe de la mise en oeuvre d'une feuille bitumineuse selon l'invention.
Other characteristics and advantages of the present invention will appear on reading the following detailed description made with reference to the appended drawing in which:
  • FIG. 1 is a schematic sectional representation of the bituminous sheet used according to the present invention,
  • FIG. 2 is a schematic representation in section of a detail of the edges of the bituminous sheet, and
  • Figure 3 is a schematic sectional view of the implementation of a bituminous sheet according to the invention.

On prépare une feuille bitumineuse 1 en imprégnant une armature 2, par exemple un voile de verre de 100 g/m², à l'aide d'une composition bitumineuse 3, éventuellement une composition de bitume modifiée par des polymères(SBS,APP ou polypropylène atactique,etc.) couramment utilisée dans le domaine, par exemple une de celles disponibles sur le marché. Il n'est pas nécessaire de modifier les propriétés des compositions du commerce, avec les avantages qui en découlent. De manière générale, l'armature 2 sera située en partie basse de la feuille bitumineuse terminée et a pour rôle de donner à la feuille une certaine tenue pendant la manutention et la mise en oeuvre.A bituminous sheet 1 is prepared by impregnating a reinforcement 2, for example a 100 g / m² glass veil, using a bituminous composition 3, optionally a bitumen composition modified by polymers (SBS, APP or polypropylene commonly used in the field, for example one of those available on the market. It is not necessary to modify the properties of the commercial compositions, with the advantages which flow therefrom. Generally, the reinforcement 2 will be located in the lower part of the finished bituminous sheet and has the role of giving the sheet a certain strength during handling and implementation.

Après imprégnation de l'armature, la feuille bitumineuse est calandrée et reçoit une couche 4 d'un matériau fusible dans la gamme de température de coulée de l'asphalte. La nature et la quantité de ce matériau fusible sont déterminées de telle sorte qu'il subisse une fusion totale ou quasi-totale lors de la coulée de l'asphalte chaud. Cette fusion se produisant avec absorption de chaleur en raison du changement d'état du matériau, une partie de la chaleur dégagée par l'asphalte est ainsi absorbée sans élévation de température et le bitume sous-jacent n'est pas porté à une température suffisante pour qu'il puisse remonter à travers la couche d'asphalte que l'on vient de déposer. On utilisera avantageusement à cet effet un non-tissé de matériau fusible d'un grammage de 20 à 60 g/m², de préférence de 20 à 40 g/m². La forme de non-tissé est utilisée pour des raisons pratiques de fabrication industrielle mais d'autres techniques d'application de matériau approprié pourraient être utilisées. Un polyester est un matériau parfaitement approprié, donnant en outre une excellente adhérence entre la feuille bitumineuse et la couche d'asphalte.After impregnation of the reinforcement, the bituminous sheet is calendered and receives a layer 4 of a fusible material in the temperature range of asphalt casting. The nature and the quantity of this meltable material are determined so that it undergoes a total or almost total melting during the pouring of hot asphalt. This fusion taking place with absorption of heat due to the change of state of the material, part of the heat given off by the asphalt is thus absorbed without raising the temperature and the underlying bitumen is not brought to a sufficient temperature. so that it can go up through the layer of asphalt that we just deposited. Advantageously, a nonwoven of fusible material weighing 20 to 60 g / m², preferably 20 to 40 g / m², will be used for this purpose. The nonwoven form is used for practical industrial manufacturing reasons but other techniques of applying suitable material could be used. Polyester is a perfectly suitable material, giving in addition to excellent adhesion between the bituminous sheet and the asphalt layer.

L'utilisation d'un tel matériau fusible permet en outre, du fait de son interposition entre la couche bitumineuse et l'asphalte, de modifier la couche d'asphalte pour améliorer ses caractéristiques en lui ajoutant des polymères sans pour autant créer des phénomènes d'incompatibilité avec les polymères de la feuille bitumineuse du fait que les polymères des deux couches ne se rencontrent pas.The use of such a fusible material also makes it possible, because of its interposition between the bituminous layer and the asphalt, to modify the asphalt layer to improve its characteristics by adding polymers to it without creating phenomena of 'incompatibility with the polymers of the bituminous sheet because the polymers of the two layers do not meet.

Afin d'améliorer encore les caractéristiques de la feuille bitumineuse selon l'invention qui se présente de manière classique sous forme d'un lé enroulé, l'épaisseur du lé est réduite sur les deux bords du lé, d'un côté sur la face supérieure (6) et de l'autre côté sur la face inférieure (7) de sorte qu'au recouvrement de deux lés adjacents, il ne se forme pas de surépaisseur (figure 2). Cette réduction d'épaisseur peut se faire au moment du calandrage ou par enlèvement de matière sur la feuille calandrée.In order to further improve the characteristics of the bituminous sheet according to the invention which is conventionally in the form of a rolled strip, the thickness of the strip is reduced on the two edges of the strip, on one side on the face upper (6) and on the other side on the lower face (7) so that overlapping two adjacent strips, it does not form excess thickness (Figure 2). This reduction in thickness can be done during calendering or by removing material from the calendered sheet.

La figure 3 représente schématiquement l'utilisation de la feuille bitumineuse selon l'invention, cette feuille 1 étant posée avec ou sans fixation sur le support 8 à revêtir, par exemple un plancher en béton, puis une couche d'asphalte 9 est coulée sur la feuille 1.FIG. 3 schematically represents the use of the bituminous sheet according to the invention, this sheet 1 being placed with or without fixing on the support 8 to be coated, for example a concrete floor, then a layer of asphalt 9 is poured onto sheet 1.

Selon les caractéristiques voulues pour la fixation de la feuille 1 au support 8, la sous-face 5 de la feuille 1 comporte une feuille étanche, une dispersion de particules minérales (obtenue par grésage ou sablage par exemple), etc, afin de permettre une pose avec indépendance, semi-indépendance ou adhérence totale.Depending on the characteristics desired for fixing the sheet 1 to the support 8, the underside 5 of the sheet 1 comprises a waterproof sheet, a dispersion of mineral particles (obtained by sanding or sanding for example), etc., in order to allow a pose with independence, semi-independence or total adhesion.

Les principaux avantages du procédé selon l'invention est qu'il permet d'obtenir tous les avantages classiques des systèmes d'étanchéité bicouche constitués d'une chape bitumineuse ou d'une feuille bitumineuse recouverte d'une couche d'asphalte.The main advantages of the process according to the invention is that it makes it possible to obtain all the conventional advantages of two-layer sealing systems. consisting of a bituminous screed or a bituminous sheet covered with a layer of asphalt.

En outre, des essais en laboratoire avec des températures de coulée de l'asphalte allant jusqu'à 260°C ont montré que pour une température normale de mise en oeuvre, l'on n'obtenait absolument aucune remontée de bitume en utilisant une feuille selon l'invention, même au droit des recouvrements des lés où habituellement il y a remontée par la tranche de la feuille qui dessine en surface le fantôme du calepinage des lés.In addition, laboratory tests with asphalt pouring temperatures of up to 260 ° C have shown that for a normal working temperature, there was absolutely no rise in bitumen using a sheet. according to the invention, even at the right of the overlaps of the strips where usually there is a rise in the edge of the sheet which draws on the surface the phantom of the layout of the strips.

Cet effet est obtenu sans demander à la feuille bitumineuse une composition particulière et on utilise les liants ou liants modifiés du commerce sans changement; c'est donc une solution économique.This effect is obtained without asking the bituminous sheet for a particular composition and use is made of commercial binders or modified binders without change; it is therefore an economical solution.

En outre du fait de la séparation qui existe entre la feuille bitumineuse et la couche d'asphalte, il est possible d'utiliser des couches d'asphalte contenant des matériaux polymères de modification, sans créer de problèmes d'incompatibilité avec les polymères contenus dans la composition bitumineuse sous-jacente.In addition, due to the separation that exists between the bituminous sheet and the asphalt layer, it is possible to use asphalt layers containing modified polymer materials, without creating problems of incompatibility with the polymers contained in the underlying bituminous composition.

Claims (7)

  1. Method for using a waterproof bituminous sheet intended to receive a coating of poured asphalt and consisting of a reinforcement impregnated with a bitumen modified by fillers and polymers and having a fusible coating of material, characterised in that, for the fusible coating, a material melting at a temperature less than the pouring temperature of the particular asphalt used is utilised, the bituminous sheet is positioned so that the said fusible coating constitutes the face on which the coating of asphalt is poured and the said fusible coating is caused to absorb a sufficient proportion of the pouring heat for fusion of the underlying bitumen to be prevented thereby.
  2. Method according to Claim 1, characterised in that the material is a plastic material.
  3. Method according to Claim 1 or 2, characterised in that the material is a polyester.
  4. Method according to any one of Claims 1 to 3, characterised in that the fusible coating was applied at a weight of 20 to 60 g/m².
  5. Method according to Claim 4, characterised in that the fusible coating was applied at a weight of 20 to 40 g/m².
  6. Method according to any one of Claims 1 to 5, characterised in that the material is in the form of a nonwoven material.
  7. Method according to any one of Claims 1 to 4, wherein the sheet is in the form of a roll, characterised in that the edges of the roll have a reduced thickness, on the one hand on the top face and on the other hand on the bottom face.
EP90402644A 1989-09-29 1990-09-26 Bituminous waterproofing laminate adapted to receive a layer of liquid asphalt Expired - Lifetime EP0420747B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90402644T ATE89887T1 (en) 1989-09-29 1990-09-26 BITUMINOUS MEMBRANE TO OBTAIN A MUSTIC ASPHALT LAYER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8912754 1989-09-29
FR8912754A FR2652617B1 (en) 1989-09-29 1989-09-29

Publications (3)

Publication Number Publication Date
EP0420747A2 EP0420747A2 (en) 1991-04-03
EP0420747A3 EP0420747A3 (en) 1991-05-15
EP0420747B1 true EP0420747B1 (en) 1993-05-26

Family

ID=9385945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90402644A Expired - Lifetime EP0420747B1 (en) 1989-09-29 1990-09-26 Bituminous waterproofing laminate adapted to receive a layer of liquid asphalt

Country Status (6)

Country Link
EP (1) EP0420747B1 (en)
AT (1) ATE89887T1 (en)
DE (1) DE69001736T2 (en)
FR (1) FR2652617B1 (en)
MC (1) MC2154A1 (en)
PT (1) PT95471B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4413624C2 (en) * 1994-04-19 2002-07-11 Roland Von Wielemans Process for making a bituminous seal
SE506335C2 (en) * 1995-06-16 1997-12-01 Trelleborg Building Products A Sealing layer for roofing
DE29713365U1 (en) * 1997-07-28 1998-01-02 VIA-DACHTEILE Handelsgesellschaft mbH + Co., 22177 Hamburg Component sealing
WO2003095749A1 (en) * 2002-05-10 2003-11-20 Wilder Construction Company Polymer-modified asphalt containment system
US7077602B2 (en) 2002-05-10 2006-07-18 Wilder Construction Company Method and system for containment, such as a containment cap for solid waste constructed of modified asphalt
NL1022827C2 (en) * 2003-03-03 2004-09-22 Ubbink Nederland Bv Covering material for roofs.
WO2010078211A1 (en) 2008-12-30 2010-07-08 Saint-Gobain Performance Plastics Corporation Method of installing a roofing membrane

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068879B (en) * 1959-11-12
DE2026136C3 (en) * 1970-05-29 1978-07-27 Hoechst Ag, 6000 Frankfurt Use of a polyester carrier film with polyethylene coatings for road paving and polyester carrier film with polyethylene coatings for use
FR2495664A1 (en) * 1980-08-28 1982-06-11 Meple Materiaux Etancheite Ent Sealing material - contg. thermoplastic pref. polyethylene fabric impregnated with pref. bitumen
US4521478A (en) * 1984-08-20 1985-06-04 Hageman John P In situ roofing composite and method
FR2625243B1 (en) * 1987-12-24 1993-02-05 Soprema Sa ROOFING SYSTEM

Also Published As

Publication number Publication date
MC2154A1 (en) 1992-03-10
PT95471A (en) 1993-08-31
EP0420747A3 (en) 1991-05-15
FR2652617B1 (en) 1993-09-24
FR2652617A1 (en) 1991-04-05
DE69001736D1 (en) 1993-07-01
ATE89887T1 (en) 1993-06-15
EP0420747A2 (en) 1991-04-03
DE69001736T2 (en) 1993-09-02
PT95471B (en) 1997-09-30

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