EP2612972B1 - Panneau d'isolation sonore préfabriqué et insonorisant pour construction de bâtiment, routes, tunnels et analogues, et son procédé de fabrication - Google Patents

Panneau d'isolation sonore préfabriqué et insonorisant pour construction de bâtiment, routes, tunnels et analogues, et son procédé de fabrication Download PDF

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Publication number
EP2612972B1
EP2612972B1 EP20120007457 EP12007457A EP2612972B1 EP 2612972 B1 EP2612972 B1 EP 2612972B1 EP 20120007457 EP20120007457 EP 20120007457 EP 12007457 A EP12007457 A EP 12007457A EP 2612972 B1 EP2612972 B1 EP 2612972B1
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EP
European Patent Office
Prior art keywords
slag
panel
concrete
prefabricated
barrier
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EP20120007457
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German (de)
English (en)
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EP2612972A1 (fr
Inventor
Enrico Gallo
Marco Risso
Roberto Steffenino
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped

Definitions

  • the present invention relates to a prefabricated sound insulating and sound absorbing panel for building construction, roads, tunnels and the like.
  • the invention further relates to the process for manufacturing such panel.
  • Document CN101634176A describes a light panel for building constructions comprising an outer layer and an inner core and wherein blast furnace slag is used as component of the outer layer, whereas the inner core is of polystyrene foam.
  • the outer layer of such known panel exhibits sound insulation features.
  • the above known panel has quite limited sound insulation features as it exhibits a structure not suitable for carrying out the dual and necessary function of sound insulating barrier and sound absorbing barrier for the effective noise reduction.
  • the slag is used as sound insulation means, the same is not structurally distributed in an optimal manner, also considering the shape thereof and the grain size thereof, for carrying out, as said, the dual function of sound insulating barrier and sound absorbing barrier.
  • the present invention aims to solve them.
  • An object of the present invention is to provide a prefabricated panel which concurrently provides a sound insulating barrier and a sound absorbing barrier for the effective reduction of annoying and/or harmful noises in building construction, roads, tunnels and the like.
  • Another object of the present invention is to provide a prefabricated sound insulating and sound absorbing panel for building construction, roads, tunnels and the like which is easy to manufacture, has a certain effectiveness and is easy to install.
  • Yet another object of the present invention is to provide a process for manufacturing a prefabricated sound insulating and sound absorbing panel for building construction, roads, tunnels and the like which is quick and easy to manufacture.
  • the present invention provides a prefabricated sound insulating and sound absorbing panel for building construction, roads, tunnels and the like the fundamental feature whereof is the object of claim 1.
  • the essential feature of the process for manufacturing the prefabricated sound insulating and sound absorbing panel for building construction, roads, tunnels and the like, according to the present invention, is the object of claim 7.
  • slag is widely used as inert material for prefabricated construction panels also with sound insulation purposes. In such use, it is mixed with other components in a known manner for forming a layer of the panel ( CN101634176A ).
  • the known literature does not specifically indicate the shape or grain size of the slag used to this end.
  • Blast furnace slag (or blast furnace dross) is a by-product of the cast iron manufacturing process during which large amounts of liquid dross are formed having a composition similar to Portland concrete.
  • the dross acquires hydraulic features if, at the exit from the blast furnace, it is suddenly cooled and transformed into porous granules with a vitreous structure (amorphous silica), a material called granular slag. Subsequently, this material is ground so as to obtain a powder having fineness comparable to that of concrete.
  • the slag has both sound insulating (when in powder state) and sound absorbing properties (when in natural granular state).
  • basic granulated slag is used for making prefabricated panels, which by itself has hydraulic properties, i.e. the capability of hardening in contact with water.
  • basic granulated slag is associated with other binders, which act as hydraulic property activators.
  • the slag concrete is particularly suitable for making workpieces that require a high resistance to the disintegrating action of atmospheric agents, as well as in massive casting, due to its feature of having a low hydration heat.
  • slag proportionally increases the resistance to chemical attacks: it is particularly indicated for those workpieces that may come into contact with aggressive waters.
  • the use of slag in prefabricated panels improves permeability and resistance to the attack of environmental chemical agents, imparting better duration features to the end product as compared to other blends.
  • reference numeral 10 globally indicates an exemplary embodiment of the prefabricated sound insulating and sound absorbing panel for building construction, roads, tunnels and the like, object of the invention.
  • Said panel 10 comprises a plurality of prefabricated tiles 11 ( fig. 2 ), assembled and steadily fixed to each other, in a geometrical arrangement according to lines and columns, so as to form a prefabricated wall element or the like 12, comprising a back base layer 12.1 substantially shaped as a parallelepiped sheet and a front facing layer 12.2 with a rusticated surface, having a plurality of pyramid cusps 13 with alternating orientation.
  • Two sturdy U-shaped metal section bars 14, parallel to each another, are respectively steadily fixed on opposite sides of panel 10 and are open outwards: they constitute support and connection elements for making a workpiece with prefabricated modular components.
  • Each prefabricated tile 11 ( fig. 2 ) comprises, correspondingly and in a single body, two adhering structural layers, i.e.:
  • a metal armour 15, for example grid-like, is interposed between said back layer 11.1 and said front facing layer 11.2 of tile 11 for connecting said parts and structurally reinforcing the same tile.
  • Sound insulating blends for making the back layer 11.1 constituting a sound insulating barrier (percentages by weight):
  • the slag is provided as ground powder.
  • Blends for making the front facing layer 11.2 constituting a sound absorbing barrier (percentages by weight):
  • the slag is provided in natural grain shape, i.e. as so-called granular slag.
  • the panel according to the invention may also be made as a single body (rather than with a plurality of assembled tiles), comprising a back base layer constituting the sound insulating barrier and a front facing layer constituting the sound absorbing barrier.
  • the process for manufacturing the prefabricated sound insulating and sound absorbing panel for building construction, roads, tunnels and the like, according to the invention, comprises the following steps:
  • a suitable metal armour for example a grid, is positioned on said first casting for reinforcement and connection with said second casting.
  • the present invention allows the objects described in the introduction of the present description to be achieved in a simple and advantageous manner.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Lining And Supports For Tunnels (AREA)

Claims (8)

  1. Panneau (10) préfabriqué isolant acoustique et absorbant acoustique pour bâtiments, routes, tunnels et similaires, comprenant au moins deux couches structurelles (11.1, 12.1; 11.2, 12.2) dont au moins l'une comporte du laitier de haut fourneau en tant que matériau d'isolation acoustique, caractérisé en ce que ledit panneau (10) comprend :
    - une couche de base dorsale (11.1; 12.1), réalisée avec un mélange intime de ciment et de laitier à l'état de poudre et formant une barrière à haut pouvoir d'isolation acoustique, et
    - une couche de parement frontale (11.2; 12.2), réalisée avec un mélange intime de ciment et de laitier à l'état granulométrique naturel, dénommé laitier granulé, et formant une barrière à haut pouvoir d'absorption acoustique.
  2. Panneau selon la revendication 1, caractérisé en ce que ledit panneau (10) comprend une pluralité de carreaux préfabriqués (11) assemblés et fixés entres eux de manière stable afin de former un élément préfabriqué de mur ou similaires (12), et en ce que chaque carreau préfabriqué (11) comprend deux couches structurelles adhérentes :
    - une couche de base dorsale (11.1), réalisée avec un mélange intime de ciment et de laitier à l'état de poudre et formant une barrière à haut pouvoir d'isolation acoustique, et
    - une couche de parement frontale (11.2), réalisée avec un mélange intime de ciment et de laitier à l'état granulométrique naturel, dénommé laitier granulé, et formant une barrière à haut pouvoir d'absorption acoustique.
  3. Panneau selon la revendication 1 et/ou 2, caractérisé en ce que ledit panneau, respectivement chaque carreau préfabriqué (11) dudit panneau, comprend une armature métallique (15) de jonction desdites couches et de renforcement structurel.
  4. Panneau selon l'une ou plus des revendications précédentes, caractérisé en ce que ladite couche de parement frontale (11.2, 12.2) présente une surface bosselée (13).
  5. Panneau selon l'une ou plus des revendications précédentes, caractérisé en ce que ladite couche dorsale (11,1, 12.1) est réalisée avec un mélange intime de ciment et de laitier à l'état de poudre comportant les composants suivants (pourcentages en poids) :
    - argile expansée 5-40%, laitier 5-60%, sable 5-40%, ciment 10-30%, eau ajoutée 5-10%, additif CTC < 2%, gravillon 5-50%, et ladite couche frontale (11.2, 12.2) est réalisée avec un mélange intime de ciment et de laitier à l'état granulométrique naturel, dénommé laitier granulé, comportant les composants suivants (pourcentages en poids) :
    - argile expansée 5-40%, laitier 5-60%, sable 5-40%, ciment 10-30%, eau ajoutée 5-10%, additif CTC < 2%.
  6. Panneau selon la revendication 1, caractérisé en ce qu'il comprend deux robustes profilés métalliques sensiblement en U (14), parallèles entre eux, respectivement fixés de manière stable sur les côtés opposés du même panneau (10) et ouverts vers l'extérieur, qui constituent des éléments de support et de connexion pour la réalisation d'un ouvrage à composants modulaires préfabriqués.
  7. Procédé de production du panneau préfabriqué isolant acoustique et absorbant acoustique pour bâtiments, routes, tunnels et similaires, selon l'une ou plus des revendications précédentes, caractérisé en ce qu'il comprend les étapes suivantes :
    - dans un coffrage ou moule convenablement conformé on effectue une première coulée partielle d'un mélange intime de ciment et de laitier à l'état granulométrique naturel, dénommé laitier granulé, afin de former un parement frontal constituant une barrière à haut pouvoir d'absorption acoustique ;
    - on effectue ensuite une deuxième coulée partielle, jusqu'à remplissage dudit coffrage ou moule, d'un mélange intime de ciment et de laitier en poudre afin de former une couche dorsale constituant une barrière à haut pouvoir d'isolation acoustique ;
    - on effectue un séchage naturel avec maturation de la pièce (8 à 12 heures selon les conditions de fonctionnement), respectivement le séchage avec maturation forcée en fourneau (3 à 5 heures);
    - suivis par les opérations de détachement de la pièce dudit coffrage ou moule.
  8. Procédé selon la revendication 7, caractérisé en ce que, dans ledit coffrage ou moule, on place sur ladite première coulée une armature métallique de renforcement et de jonction adaptée par rapport à ladite deuxième coulée.
EP20120007457 2011-11-03 2012-10-31 Panneau d'isolation sonore préfabriqué et insonorisant pour construction de bâtiment, routes, tunnels et analogues, et son procédé de fabrication Active EP2612972B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT001000A ITTO20111000A1 (it) 2011-11-03 2011-11-03 Pannello prefabbricato fonoisolante e fonoassorbente per costruzioni edili, strade, gallerie e simili e procedimento per la sua fabbricazione

Publications (2)

Publication Number Publication Date
EP2612972A1 EP2612972A1 (fr) 2013-07-10
EP2612972B1 true EP2612972B1 (fr) 2015-01-14

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EP20120007457 Active EP2612972B1 (fr) 2011-11-03 2012-10-31 Panneau d'isolation sonore préfabriqué et insonorisant pour construction de bâtiment, routes, tunnels et analogues, et son procédé de fabrication

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EP (1) EP2612972B1 (fr)
IT (1) ITTO20111000A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020008482A1 (fr) * 2018-07-02 2020-01-09 Afv Acciaierie Beltrame S.P.A. Couche d'absorption et d'isolation acoustiques pour barrières anti-bruit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6613424B1 (en) * 1999-10-01 2003-09-02 Awi Licensing Company Composite structure with foamed cementitious layer
US20100078260A1 (en) * 2008-09-26 2010-04-01 Mcneal Jr Jerry J Acoustical sound barrier material
CN101634176B (zh) 2009-08-19 2011-01-12 济南大学 一种钢渣轻质夹芯隔墙板

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EP2612972A1 (fr) 2013-07-10
ITTO20111000A1 (it) 2013-05-04

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