EP3040495A1 - Fussbodenestrichverstärkung, verfahren zur verwendung solch einer verstärkung zur herstellung von fussbodenestrich - Google Patents

Fussbodenestrichverstärkung, verfahren zur verwendung solch einer verstärkung zur herstellung von fussbodenestrich Download PDF

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Publication number
EP3040495A1
EP3040495A1 EP15001479.3A EP15001479A EP3040495A1 EP 3040495 A1 EP3040495 A1 EP 3040495A1 EP 15001479 A EP15001479 A EP 15001479A EP 3040495 A1 EP3040495 A1 EP 3040495A1
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EP
European Patent Office
Prior art keywords
screed
floor
reinforcement
mesh
spacing
Prior art date
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Granted
Application number
EP15001479.3A
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English (en)
French (fr)
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EP3040495B1 (de
Inventor
Andrew Fry
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Individual
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Individual
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/168—Spacers connecting parts for reinforcements and spacing the reinforcements from the form

Definitions

  • This invention relates to a floor screed reinforcement a method of using such reinforcement to produce a screened floor.
  • Screeding is one of a numberof floor finishes used at the present time for finishing floors, particularly of new buildings. All buildings generally have a structural floor, for example, reinforced concrete, covered by some form of thermal and/or acoustic insulation. These are then covered by a floor finish. Such finishes include 18 or 22 mm chipboard, 12 to 30 mm calcium sulphate board or various screeds. Possible screeds are at least 65 mm thick sand/cement and at least 35 mm thick anhydrite.
  • the present invention seeks to overcome the disadvantages of existing screeds by providing reinforcement to the screed so that the thickness of the screed can be reduced without reducing the screed strength.
  • the reduced floors depths and imposed loads allows the structural elements to be engineered accordingly.
  • the reduction of amount of screeding materials required provides transport savings and reduces the amount of water needed, speeding up the drying process and overall build time.
  • a floor screed reinforcement comprising a reinforcing mesh intended for location below the surface of the screed and spacing means on one side of the reinforcing mesh arid adapted to space the reinforcing mesh from a floor surface to which the screed is to be applied.
  • the reinforcement also comprises a base sheet on which the screed can sit, the spacing means being located between the base sheet and the reinforcing mesh to maintain the reinforcing mesh spaced from the base sheet.
  • a floor screed reinforcement means for use in a non-structural floor, the reinforcement means comprising at least two reinforcing meshes each having a grid like pattern, at least one spacing means engaging with the reinforcing meshes for spacing apart the reinforcing meshes, the spacing means further extending from the, reinforcing meshes to space, in use, a lower reinforcing mesh above a base on which the floor screed material will be laid, and further extending above an upper reinforcing mesh and providing indicator means which is at least covered by the floor screed material.
  • the spacing means may comprise a body having a longitudinal axis and a length L, the body having end faces at its ends.
  • the spacing means has a collar at or near each of its end faces for engaging with the grid pattern of the reinforcement meshes.
  • a three dimensional spacer mesh filling the area between the floor surface or the base sheet and the reinforcing mesh.
  • the spacing means may comprise a corrugated mesh with a "U” or "V"-shaped profile filling the area between the floor surface or the base sheet and the reinforcing mesh.
  • the spacing means may instead comprise a loop stitch supporting arrangement located in the area between the floor surface or the base sheet and the reinforcing mesh.
  • the base sheet may comprise a base reinforcing mesh.
  • the base sheet may be substantially impermeable to moisture and may comprise a plastics material.
  • the spacing means may comprise spacer support modules attached to the base sheet and extending upwards therefrom to the reinforcing mesh.
  • the spacer support modules may be molded onto the base sheet and the reinforcing mesh may be attached to the upper surface of the spacer support modules.
  • the various parts of the floor screen reinforcement may be secured together to form a floor screed reinforcement sheet.
  • the spacing means has a collar at or near each of its end faces for engaging with the grid pattern of the reinforcement meshes.
  • the collar is in a plane substantially perpendicular to the longitudinal axis of the spacing means.
  • the body of the spacing means has at or near Its end faces a shoulder portion, a neck portion extending along the longitudinal axis and away from the shoulder towards an end face, the neck portion engaging with holes in the grid pattern of the reinforcement meshes.
  • the spacing means has a raised portion on at least one of its end faces, which In use, is covered by screed material.
  • At least a part of the body portion of the spacing means extending along the longitudinal axis has a concave section.
  • the spacing means has a longitudinal axis with a length of between 10 and 40 mm.
  • the spacing means spaces the reinforcing mesh between 0.5 and 5 mm from the base on which the floor will be laid.
  • the spacing means has an upper end surface between 1 and 20 mm above an upper reinforcing mesh.
  • a method of making a reinforced floor screed using a reinforcement means comprising at least two reinforcement mesh layers held in spaced apart relationship by a spacing means, the spacing means further extending from the reinforcing meshes to space, in use, a lower reinforcing mesh above a base on which the floor screed material will be laid, and further extending above an upper reinforcing mesh and providing indicator means which is at least covered by the floor screed material, the method including the steps of placing a reinforcement means on a base to be covered by floor screed material, pouring a free flowing screed material over the floor in sufficient quantity to flow under the lower reinforcing mesh and also to cover an upper mesh and cover the indicator means above the upper mesh.
  • the screed comprises an anhydride screed.
  • the method includes a screed having a thickness of between 10 and 40 mm and the reinforcing mesh is between 1 and 20 mm beneath the surfaces of the screed material.
  • the floor structure 1 comprises the basic structural floor3 which provides the support for the floor finishes and is a standard part of any building structure. Overlaid over this there will usually be some form of insulating layer 5 such as thermal and/or acoustic Insulation and on top of this can be laid a screed 7.
  • the screed is formed from a free flowing screed material which is applied over a reinforcement mesh as will be described hereafter.
  • a reinforcement mesh as will be described hereafter.
  • an anhydrite screed is used but the invention can also be used with other screeds such as sand/cement.
  • the Invention provides a reinforcement of the screed which will provide sufficient additional strength to enable a much thinner layer of screed to be used while maintaining the necessary strength.
  • Figure 2A shows one aspect of the invention and is a sectional view of the floor starting with the insulating layer 5 on which the screed layer 7 is supported.
  • the floor screed reinforcement 11 comprises a reinforcing mesh 13 which in use, as shown, is located below the surface 15 of the screed 17 and spacing means 19 is located on one side of the reinforcing mesh 13 and is arranged to space the reinforcing mesh 13 from the surface 21 of the insulating layer 5 to which the screed 17 is to be applied.
  • the spacing means 19 in figure 2A comprises a layer of three dimensional mesh which fills in the volume between the reinforcement mesh 13 and the surface 21 of the insulating layer 5 and thus spaces the reinforcement mesh from the surface 21.
  • the three dimensional mesh is composed of relatively thin strands leaving significant spaces for the free flowing screed to occupy once it has been poured as indicated by the arrows 23.
  • a screed 17 of between 10 and 30 mm in thickness can be used with the reinforcing mesh 13 maintained of the order of 5 mm beneath the screed surface as measured in the middle of the screeded area.
  • the thickness of the three dimensional spacing mesh will be of the order of 5 to 25 mm.
  • This mesh can be made from a suitable plastics material, a suitable metal or glass fibre.
  • Suitable reinforcement mesh can be seen from figure 3 .
  • a plastics moulded mesh 31 is provided having square apertures 33 through which the screed can pass.
  • Suitable plastics material includes Polyester (PET) Polypropylene (PP), and Polytetrafluoroethylene (PTFE).
  • PET Polyester
  • PP Polypropylene
  • PTFE Polytetrafluoroethylene
  • Other materials which can be used include metals such as stainless or galvanised steel and glass fibre.
  • the thickness of the mesh sheet would be of the order of 1 to 2 mm. While the design of reinforcing mesh shown is considered the most suitable, other designs of mesh could be used using differently shaped apertures such as rectangular, circular, diamond shape etc.
  • the reinforcement mesh 13 can be stuck to the top of the three dimensional spacing mesh 19 so that the whole provides a reinforcing sheet.
  • Figure 2B is a view similar to figure 2A but is varied by the inclusion of a second or base reinforcing mesh 35, suitably of the same design as the upper reinforcing mesh 13.
  • This mesh forms a base for the screed 17 and as with the first reinforcing mesh 13, can be stuck to the underside of the three dimensional spacing mesh 19 so that the whole comprises a reinforcing sheet.
  • Figure 2C is a view similar to figure 2A or 2B but is varied by the replacement of the second reinforcing mesh 35 with a moulded plastics sheet 37.
  • This sheet is suitably generally impervious to moisture and will act as a moisture barrier and provides a secondary reinforcement facing withy tensile strength.
  • Figure 4A is a view similar to figure 2A but is varied by the replacement of the three dimensional spacing mesh with a corrugated mesh 39 with a "U"-shaped profile.
  • This mesh may be the same as in the reinforcing mesh but suitably formed into corrugations.
  • the reinforcing mesh 13 sits on and is stuck to the upper part of the corrugations while the lower part of the corrugations sit on the surface 21 of the insulating layer 5.
  • Figure 4B is a view similar to figure 4A but is varied by the inclusion of a second or base reinforcing mesh 35, suitably of the same design as the upper reinforcing mesh 13.
  • This mesh forms a base for the screed 17 and as with the first reinforcing mesh 13, can be stuck to the underside of the corrugated spacing mesh 39 so that the whole comprises a reinforcing sheet.
  • Figure 4C is a view similar to figure 4A or 4B but is varied by the replacement of the second reinforcing mesh 35 with a moulded plastics sheet 37.
  • This sheet is suitably generally impervious to moisture and will act as a moisture barrier and provides a secondary reinforcement facing with tensile strength.
  • Figure 5A is a view similar to figure 4A but is varied by the replacement of the corrugated mesh 39 with a "U"-shaped profile with a corrugated mesh with a "V"-shaped profile 41.
  • This mesh may be the same as in the reinforcing mesh but suitably formed into corrugations.
  • the reinforcing mesh 13 sits on and is stuck to the upper part of the corrugations while the lower part of the corrugations sit on the surface 21 of the insulating layer 5.
  • Figure 5B is a view similar to figure 5A but is varied by the inclusion of a second or base reinforcing mesh 35, suitably of the same design as the upper reinforcing mesh 13.
  • This mesh forms a base for the screed 17 and as with the first reinforcing mesh 13, can be stuck to the underside of the corrugated spacing mesh 41 so that the whole comprises a reinforcing sheet.
  • Figure 5C is a view similar to figure 5A or 5B but is varied by the replacement of the second reinforcing mesh 35 with a moulded plastics sheet 37.
  • This sheet is suitably generally impervious to moisture and will act as a moisture barrier and provides a secondary reinforcement facing withy tensile strength.
  • Figure 6A is a view similar to figure 5A but is varied by the replacement of the corrugated mesh with a "V"-shaped profile 41 with a loop stitch supporting arrangement 43.
  • Loop stitch I s a method in which the layer 13 is woven so as to provide spacing loops so as to space the layer 13, located 10 to 20 mm from the surface 21 of the insulating layer 5.
  • Figure 6B is a view similar to figure 6A but is varied by the inclusion of a second or base reinforcing mesh 35, suitably of the same design as the upper reinforcing mesh 13.
  • This mesh forms a base for the screed 17.
  • the two meshes 13 and 35 are woven together, leaving a 10 to 20 mm gap between each mesh so that the whole comprises a reinforcing sheet.
  • Figure 6C is a view similar to figure 6A or 6B but is varied by the replacement of the second reinforcing mesh 35 With a moulded plastics sheet 37.
  • This sheet is attached to the spacing loops of the woven mesh 13.
  • the sheet 37 is suitably generally impervious to moisture and will act as a moisture barrier and provides a secondary reinforcement facing with tensile strength.
  • FIG 7 is a view similar to figure 2C but in this embodiment, the spacing means comprises a plurality of modules 47 which are hollow and are moulded on the base sheet 37 (alternatively modules could be solid and be either bonded to or be part of a moulded base sheet).
  • the reinforcing mesh 13 is attached to the upper surfaces 49 of the modules 37.
  • a plan view of the arrangement of the modules 47 is shown in Figure 8 .
  • the modules 47 are hexagonal (other module shapes could be used, such as round, star or square shaped) having a width in the range of 3 to 25 mm, preferably 5 to 10 mm. In one particular example, the modules had a width of 8 mm.
  • Figure 8 is a plan view showing the layout of the modules on the base sheet. As can be seen, the modules are spaced apart in a regular array. In this instance, the section of the spacing modules is hexagonal, chosen to enable the modules to engage easily with the reinforcement mesh.
  • Figure 9a shows another alternative embodiment.
  • the Insulating layer 5 is not covered by a waterproof film, although the skilled reader would normally expect it to be present.
  • the reinforcing meshes 13 are held in spaced apart relationship by the spacing means 90.
  • the spacing means has a body with waisted section, or alternatively described as inwardly curved section like an hourglass.
  • thescreed material 17 once poured has flowed all around the reinforcing meshes and the spacing means to completely cover them.
  • the insulating layer 5 is covered by a waterproof layer 91.
  • the spacing means 92 is shown holding the reinforcement meshes 13 spaced from each other and also from top and bottom surfaces of the screed material 17.
  • This arrangement has the advantage that there are two reinforcement meshes, held close to the top and bottom parts respectively of the screed to provide reinforcement near the surfaces and so enable a thinner layer of screed to be applied over the upper surface of the mesh in order to cover it.
  • thinner screed layers are advantageous because they require less screed material, less water, will dry more quickly and so enable the construction process to be completed more quickly and cheaply.
  • the spacing modules can be conveniently and advantageously a cylindrical shape.
  • the spacing means 92 is a cylindrical body made from a plastics material. It is provided with two annular collars arranged to be substantially perpendicular to the longitudinal axis of the spacing means which engage with the reinforcing mesh.
  • Figure 9C shows a further alternative embodiment.
  • the spacing body has a cross sectional dimension (or diameter) which is constant for much of the body length, but with a reduced section near the ends of the spacing means.
  • This reduced section provides a shoulder portion and a neck portion extending along the longitudinal axis of the spacing means.
  • the neck portion is sized such that it can pass through spaces or holes in the grid pattern of the reinforcing mesh and so engage and hold the two reinforcing mesh elements in spaced apart relationship.
  • the spacing means may then be welded, glued or otherwise secured to the reinforcing meshes.
  • Figures 10A , 10B , 10C and 10D show alternative designs for the spacing body 90.
  • the spacing body is provided with top and bottom surfaces 94 and 96 respectively.
  • the bottom surface 96 is flat and provides a stable base which can be placed on a floor base to support the reinforcing meshes.
  • the top surface 94 is shown as a flat surface in this embodiment but can also be of any other convenient shape.
  • the body 90 is also provided with angular collars 98 which engage with the reinforcing meshes to locate the components and hold them in a predetermined spatial relationship.
  • the spacing means shown in figure 10A is substantially symmetrical.
  • a particular advantage of a symmetrically shaped spacing means is that the orientation is not important in the assembly of the sheets of reinforcing mesh material and additionally, the reinforcing sheets do not need to have top or bottom surfaces, which is more convenient when on the construction site.
  • the top surface 94 is used as a convenient guide to indicate how much screed material is needed to cover the upper reinforcing mesh so that it is completely covered.
  • the spacer 90 has a cylindrical body.
  • the top surface could have a raised portion 94a in the form of a conical shape or rounded nipple like shape with the tip of the raised portion or nipple indicating the level of the screed material required to cover the reinforcing mesh and hold it within the screed at the desired distance beneath the surface.
  • FIG 10C there is an alternative cylindrical section spacing body, with the annular collars 98.
  • Alternative shapes for the body can easily be envisaged and could include barrel shapes, or bodies having square or rectangular shapes, or other convenient polygons, such as hexagons.
  • the spacing body corresponds to the arrangement shown In Figure 9C .
  • the body 90 is only provided with two sets of shoulders 106, from which extends a neck portion 104.
  • the neck portion extends through the holes in the reinforcement mesh and may be glued, welded or otherwise secured in place.
  • the length of the neck is designed so that the neck extends beyond the mesh to provide the desired spacing of the mesh from either the floor base or the top surface of the screed.
  • the spacing bodies 90 can be distributed across the reinforcement meshes and be placed in the range of 25 to 300 mm apart, preferably 100 to 200 mm apart. In one particular example, the spacing bodies are spaced about 50 mm apart.
  • the spacing bodies are clipped or fitted into the meshes by elastic distortion of the grid.
  • they could be glued or welded in place.
  • the various parts of the floor screen reinforcement are secured together to form a floor screed reinforcement sheet which can then be laid as a single sheet.
  • the invention also includes a method of making a floor screed using one of the above described floor screen reinforcement sheet
  • the method comprises taking a floor screed reinforcement sheet, laying the floor screed reinforcement sheet on the surface to be screeded and pouring a free flowing screed thereover of an amount sufficient to locate the reinforcing mesh below the surface thereof.
  • cross sections of the finished screed can be seen in the sectional views of figures 2 , 4 , 5 , 6 and 7 .

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Floor Finish (AREA)
EP15001479.3A 2014-05-23 2015-05-18 Fussbodenestrichverstärkung, verfahren zur verwendung solch einer verstärkung zur herstellung von fussbodenestrich Active EP3040495B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB1409337.1A GB201409337D0 (en) 2014-05-23 2014-05-23 A floor screed reinforcement a method of using such reinforcement to produce a screeded floor

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EP3040495A1 true EP3040495A1 (de) 2016-07-06
EP3040495B1 EP3040495B1 (de) 2021-04-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110424669A (zh) * 2019-08-28 2019-11-08 成都建工第七建筑工程有限公司 一种地坪抗裂限度器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0285593A1 (de) * 1987-04-03 1988-10-05 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Verfahren zur Erhöhung des Korrosionswiderstandes eines gehärteten und selbstangelassenen Armierungsstahlstabes
FR2633322A1 (fr) * 1988-06-22 1989-12-29 Poissonnier Francis Entretoise d'ecartement de fers pour coffrage formee par une partie centrale longiligne et aux extremites de laquelle sont disposees deux tetes de raccordement
DE102007042700A1 (de) * 2007-09-07 2009-03-12 Walter Gutjahr Verfahren zur Herstellung eines hochbelastbaren Estrichs geringer Schichtdicke sowie Bewehrungsmaterial zur Durchführung des Verfahrens
DE102012004785A1 (de) * 2012-03-06 2013-09-12 beweka Betonwerk Kahla GmbH Abstandhalter zum Einsetzen in mit einem Basismaterialherzustellende Bauteile mit integrierten textilen Strukturen
WO2015039869A1 (de) * 2013-09-18 2015-03-26 Groz-Beckert Kg Abstandshalter für eine bewehrungslage, bewehrungsanordnung für ein betonbauteil sowie verfahren zur herstellung einer bewehrungsanordnung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0285593A1 (de) * 1987-04-03 1988-10-05 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Verfahren zur Erhöhung des Korrosionswiderstandes eines gehärteten und selbstangelassenen Armierungsstahlstabes
FR2633322A1 (fr) * 1988-06-22 1989-12-29 Poissonnier Francis Entretoise d'ecartement de fers pour coffrage formee par une partie centrale longiligne et aux extremites de laquelle sont disposees deux tetes de raccordement
DE102007042700A1 (de) * 2007-09-07 2009-03-12 Walter Gutjahr Verfahren zur Herstellung eines hochbelastbaren Estrichs geringer Schichtdicke sowie Bewehrungsmaterial zur Durchführung des Verfahrens
DE102012004785A1 (de) * 2012-03-06 2013-09-12 beweka Betonwerk Kahla GmbH Abstandhalter zum Einsetzen in mit einem Basismaterialherzustellende Bauteile mit integrierten textilen Strukturen
WO2015039869A1 (de) * 2013-09-18 2015-03-26 Groz-Beckert Kg Abstandshalter für eine bewehrungslage, bewehrungsanordnung für ein betonbauteil sowie verfahren zur herstellung einer bewehrungsanordnung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110424669A (zh) * 2019-08-28 2019-11-08 成都建工第七建筑工程有限公司 一种地坪抗裂限度器
CN110424669B (zh) * 2019-08-28 2024-06-11 成都建工第七建筑工程有限公司 一种地坪抗裂限度器

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GB201409337D0 (en) 2014-07-09

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