EP2612972B1 - Prefabricated sound insulating and sound absorbing panel for building construction, roads, tunnels and the like, and manufacturing process thereof - Google Patents
Prefabricated sound insulating and sound absorbing panel for building construction, roads, tunnels and the like, and manufacturing process thereof Download PDFInfo
- 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
- 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.)
- Active
Links
- 238000009435 building construction Methods 0.000 title claims description 15
- 238000004519 manufacturing process Methods 0.000 title description 8
- 239000002893 slag Substances 0.000 claims description 40
- 230000004888 barrier function Effects 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 238000009415 formwork Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000654 additive Substances 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003256 environmental substance Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Images
Classifications
-
- 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)
Description
- 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.
- The need of reducing annoying and/or harmful noises is felt not only in the field of civil and industrial building construction but also in that of roads and road and railway tunnels. 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. However, 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. Moreover, in the above known panel, while 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. - Document
US-A-2010/0078260 discloses an acoustical barrier material. - Starting from the notion of the above drawbacks, 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.
- In view of such objects, 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.
- Further advantageous features are listed in the dependent claims. All the claims are intended as integrally reported herein.
- The present invention will appear more clearly from the following detailed description made with reference to the annexed drawing provided by way of a non-limiting example only, wherein:
-
fig. 1 shows a perspective view of an exemplary embodiment of a prefabricated sound insulating and sound absorbing panel for building construction, roads, tunnels and the like, object of the invention; -
fig. 2 shows a perspective enlarged scale view of a tile component of the prefabricated panel according tofig. 1 . - General features of the slag in prefabricated construction panels
- In general, 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.
- It is important to note that, according to the grain size, the slag has both sound insulating (when in powder state) and sound absorbing properties (when in natural granular state).
- From a construction viewpoint, 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. However, since such hardening is per se very slow, in order to accelerate it, basic granulated slag is associated with other binders, which act as hydraulic property activators. Moreover, 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. Moreover, slag proportionally increases the resistance to chemical attacks: it is particularly indicated for those workpieces that may come into contact with aggressive waters.
- It should be noted that slag is treated as non hazardous industrial waste.
- Therefore, 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.
- In
fig. 1 ,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 ofpyramid cusps 13 with alternating orientation. - Two sturdy U-shaped
metal section bars 14, parallel to each another, are respectively steadily fixed on opposite sides ofpanel 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 parallelepiped back base layer 11.1, made with a deep blending of concrete and slag in powder state and forming a barrier with a high sound insulating power, and
- a cusp front facing layer 11.2, made with a deep blending of concrete and slag in natural granulated state, so-called granular slag, and forming a barrier with a high sound absorbing power.
- 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. - An example of blends for making each of said two layers 11.1, 11.2 of said tile 11 and thus of
panel 10 is provided hereinafter. - Foamed clay 5-40%, slag 5-60%, sand 5-40%, concrete 10-30%, added water 5-10%, additive CTC < 2%, gravel 5-50%. The slag is provided as ground powder.
- Foamed clay 5-40%, slag 5-60%, sand 5-40%, concrete 10-30%, added water 5-10%, additive CTC < 2%. The slag is provided in natural grain shape, i.e. as so-called granular slag.
- Indicative and exemplary dimensions of a prefabricated sound insulating and sound absorbing panel for building construction, roads, tunnels and the like, according to the invention.
- The dimensions shall differ according to the different uses and to the features of the positioning place:
- minimum dimensions: length 50 cm , width 25 cm,
thickness 15 cm; - maximum dimensions: length 500 cm, width 150 cm, thickness 50 cm.
- As is clear from the above, 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:
- in a suitably shaped formwork or mould, a first partial casting is made of a deep blending of concrete and slag in natural granulated state (granular slag), so as to form a front facing constituting a barrier with a high sound absorbing power;
- a second partial casting is then made for filling said formwork or mould, of a deep blending of concrete and powder slag, so as to form a back layer constituting a barrier with a high sound insulating power;
- the natural drying and hardening of the workpiece (8 to 12 hours, according to the operating conditions), or the drying and forced hardening in furnace (3 to 5 hours) are then carried out;
- and, finally, the operations for detaching the workpiece from said formwork or mould are carried out.
- Advantageously, in said formwork or mould, a suitable metal armour, for example a grid, is positioned on said first casting for reinforcement and connection with said second casting.
- As it appears from the above description, the present invention allows the objects described in the introduction of the present description to be achieved in a simple and advantageous manner.
Claims (8)
- Prefabricated sound insulating and sound absorbing panel (10) for building construction, roads, tunnels and the like, comprising at least two structural layers (11.1, 12.1; 11.2, 12.2), one of which at least contains blast furnace slag as sound insulating material, characterized in that said panel (10) comprises:- a back base layer (11.1; 12.1), made with a deep blending of concrete and slag in powder state and forming a barrier with a high sound insulating power, and- a front facing layer (11.2; 12.2), made with a deep blending of concrete and slag in natural granulated state, so-called granular slag, and forming a barrier with a high sound absorbing power.
- Panel according to claim 1, characterized in that said panel (10) comprises a plurality of prefabricated tiles (11), assembled and steadily fixed to one another so as to form a prefabricated wall element or the like (12), and in that each prefabricated tile (11) comprises two adhering structural layers:- a back base layer (11.1), made with a deep blending of concrete and slag in powder state and forming a barrier with a high sound insulating power, and- a front facing layer (11.2), made with a deep blending of concrete and slag in natural granulated state, so-called granular slag, and forming a barrier with a high sound absorbing power.
- Panel according to claim 1 and/or 2, characterized in that said panel, respectively each prefabricated tile (11) of said panel, comprises a metal armour (15) for connecting said layers and for structural reinforcement.
- Panel according to any one or more of the previous claims, characterized in that said front facing layer (11.2, 12.2) exhibits a rusticated surface (13).
- Panel according to one or more of the previous claims, characterized in that said back layer (11.1, 12.1) is made with a deep blending of concrete and slag in powder state containing the following components (percentages by weight):foamed clay 5-40%, slag 5-60%, sand 5-40%, concrete 10-30%,added water 5-10%, additive CTC < 2%, gravel 5-50%, andsaid front layer (11.2, 12.2) is made with a deep blending of concrete and slag in natural granulated state, so-called granular slag, containing the following components (percentages by weight):- foamed clay 5-40%, slag 5-60%, sand 5-40%, concrete 10-30%, added water 5-10%, additive CTC < 2%.
- Panel according to claim 1, characterized in that it comprises two sturdy substantially U-shaped metal section bars (14), parallel to one another, respectively steadily fixed on opposite sides of the same panel (10) and open outwards, which constitute support and connection elements for making a workpiece with prefabricated modular components.
- Process for making the prefabricated sound insulating and sound absorbing panel for building construction, roads, tunnels and the like, according to one or more of the previous claims, characterized in that it comprises the following steps:- in a suitably shaped formwork or mould, a first partial casting is made of a deep blending of concrete and slag in natural granulated state, so-called granular slag, so as to form a front facing constituting a barrier with a high sound absorbing power.- a second partial casting is then made for filling said formwork or mould, of a deep blending of concrete and powder slag, so as to form a back layer constituting a barrier with a high sound insulating power;- the natural drying is carried out with hardening of the workpiece (8 to 12 hours, according to the operating conditions), respectively the drying with forced hardening in furnace (3 to 5 hours);- the operations for detaching the workpiece from said formwork or mould follow.
- Process according to claim 7, characterized in that in said formwork or mould, a suitable metal armour is positioned on said first casting for reinforcement and connection with said second casting.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT001000A ITTO20111000A1 (en) | 2011-11-03 | 2011-11-03 | INSULATING AND SOUND ABSORBING PREFABRICATED PANEL FOR BUILDING CONSTRUCTION, ROADS, GALLERIES AND THE LIKE AND PROCEDURE FOR ITS MANUFACTURING |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2612972A1 EP2612972A1 (en) | 2013-07-10 |
EP2612972B1 true EP2612972B1 (en) | 2015-01-14 |
Family
ID=45420841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20120007457 Active EP2612972B1 (en) | 2011-11-03 | 2012-10-31 | Prefabricated sound insulating and sound absorbing panel for building construction, roads, tunnels and the like, and manufacturing process thereof |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2612972B1 (en) |
IT (1) | ITTO20111000A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020008482A1 (en) * | 2018-07-02 | 2020-01-09 | Afv Acciaierie Beltrame S.P.A. | Sound absorbing and sound insulating layer for anti-noise barriers |
Family Cites Families (3)
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 (en) | 2009-08-19 | 2011-01-12 | 济南大学 | Slag light sandwich partition board |
-
2011
- 2011-11-03 IT IT001000A patent/ITTO20111000A1/en unknown
-
2012
- 2012-10-31 EP EP20120007457 patent/EP2612972B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
ITTO20111000A1 (en) | 2013-05-04 |
EP2612972A1 (en) | 2013-07-10 |
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