EP2655028A1 - Method for manufacturing a concrete construction element, and construction element manufactured according to this method - Google Patents

Method for manufacturing a concrete construction element, and construction element manufactured according to this method

Info

Publication number
EP2655028A1
EP2655028A1 EP11811421.4A EP11811421A EP2655028A1 EP 2655028 A1 EP2655028 A1 EP 2655028A1 EP 11811421 A EP11811421 A EP 11811421A EP 2655028 A1 EP2655028 A1 EP 2655028A1
Authority
EP
European Patent Office
Prior art keywords
panel
weight
concrete
construction element
fire
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.)
Withdrawn
Application number
EP11811421.4A
Other languages
German (de)
French (fr)
Inventor
Gerard Hendrik Pieter HOL
Jan Luijten
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bartels Ingenieursbureau BV
Voorbij Betonsystemen BV
Original Assignee
Bartels Ingenieursbureau BV
Voorbij Betonsystemen BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bartels Ingenieursbureau BV, Voorbij Betonsystemen BV filed Critical Bartels Ingenieursbureau BV
Publication of EP2655028A1 publication Critical patent/EP2655028A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0088—Moulds in which at least one surface of the moulded article serves as mould surface, e.g. moulding articles on or against a previously shaped article, between previously shaped articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/0015—Machines or methods for applying the material to surfaces to form a permanent layer thereon on multilayered articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/003—Machines or methods for applying the material to surfaces to form a permanent layer thereon to insulating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/0038—Machines or methods for applying the material to surfaces to form a permanent layer thereon lining the outer wall of hollow objects, e.g. pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/0053—Machines or methods for applying the material to surfaces to form a permanent layer thereon to tiles, bricks or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/02—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material with fibres or particles being present as additives in the layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/04—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/04—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B13/047—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of particles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/044—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of concrete
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/103—Metal fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/102—Oxide or hydroxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/302—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2607/00—Walls, panels

Definitions

  • the invention relates to a method for manufacturing a concrete construction element which is provided with a fire- resistant cover layer.
  • Constructions of reinforced concrete in house building, utility construction or in road and hydraulic engineering are subject to increasingly strict requirements in the field of fire safety.
  • WO 2006/074913 Al is a reinforced concrete floor deck which is provided on an outer side with at least one rail to which for instance a fire-retardant or heat or sound-resistant layer can be attached.
  • Such a concrete construction element which is provided according to the prior art with a fire-resistant cover layer, has the inherent drawback of the additional costs involved in mounting this cover layer.
  • a method of the type specified in the preamble comprising the steps of (i) providing a formwork for the construction element to be manufactured, (ii) casting the concrete reguired for the construction element in the formwork, and (iii) allowing the concrete cast in accordance with step (ii) to cure in order to obtain the construction element, for instance a fire-resistant wall element, ceiling element or floor element, wherein according to the invention the formwork is at least partially formed by a fire-resistant panel, which panel is adapted for coupling to the
  • step (i) can also comprise of providing a reinforcement which is enclosed by the formwork.
  • the fire- resistant panel forming part of the formwork is coupled during the casting and curing of the concrete to the obtained construction element so as to form an integrated part thereof .
  • the panel is fire-resistant in that it is
  • the panel is fire-resistant in that it is provided on a side to be directed toward the interior of the formwork with a layer of a fire-resistant material .
  • the panel is provided with coupling means for coupling the panel to the construction element.
  • the invention also relates to a concrete construction element manufactured according to the above described method, comprising a concrete first panel which is coupled on at least one side to a fire-resistant second panel, wherein the concrete first panel comprises at least one of the components cement, limestone meal, quartz-containing material, synthetic fibres, in particular polypropylene fibres, blast-furnace slag and steel fibres.
  • the invention further relates to a concrete construction element provided with a fire-resistant cover layer and manufactured according to the above described method, comprising a concrete first panel which is coupled on at least one side to a concrete second panel, wherein the concrete second panel comprises at least one of the
  • CE I comprising 6-10% by weight CE I, 10-14% by weight limestone meal, 5-10% by weight blast-furnace slag, 7-9% by weight water, 60-65% by weight aggregate and 1% by weight additives and fibre material.
  • the aggregate comprises for instance river gravel, granite or limestone.
  • the additives comprise for instance a plasticizer, the fibre material comprises for instance synthetic fibres or steel fibres.
  • this phase having a vitreous structure and being highly fire-resistant.
  • the concrete second panel is obtained from a mixture comprising 6% by weight CEM I, 14% by weight limestone meal, 8% by weight blast-furnace slag, 7% by weight water, 64% by weight aggregate and 1% by weight additives and fibre material.
  • the concrete second panel is obtained from a mixture comprising 10% by weight CEM I, 11% by weight limestone meal, 11% by weight blast-furnace slag, 7% by weight water, 60% by weight aggregate and 1% by weight additives and fibre material.
  • a concrete second panel according to the above described exemplary embodiments is also suitable per se as fire-resistant cover layer which according to the A prior art can be attached to a separately manufactured concrete first panel.
  • the invention further relates to a concrete construction element provided with a fire-resistant cover layer
  • the first panel is coupled to the second panel by means of at least one anchor bolt.
  • Coupling the first panel to the second panel by means of anchor bolts during manufacture of a construction element is per se simple and is relatively inexpensive.
  • a coupling by means of anchor bolts has the advantage that after exposure to fire, wherein the second panel has become unusable but the first panel and the anchor bolts have not, the second panel can be replaced by a fire-resistant panel which can be attached to the first panel by means of the still usable anchor bolts.
  • the anchor bolt is for instance manufactured from steel with a thermal conductivity coefficient ⁇ amounting to about 50 /m.K.
  • the first panel is for instance manufactured from a concrete with a thermal conductivity coefficient ⁇ amounting to about 1 W/m.K.
  • the second panel is for instance manufactured from a concrete with a thermal conductivity coefficient ⁇ amounting to about 1 W/m.K.
  • the layer of a fire-resistant material has for instance a thermal conductivity coefficient ⁇ amounting to about 0.01 W/m.K.
  • the method and a concrete construction element obtained according to this method are widely applicable in house building, utility construction and in road and hydraulic engineering .
  • fig. 1 shows a cross-section of an embodiment of a concrete construction element according to the invention.
  • Fig. 1 shows a cross-section 5 through a reinforced concrete construction element 1 (reinforcement not shown) which is provided with a concrete cover panel 2 coupled thereto by anchor bolts 4, as seen along a line through anchor bolts 4.
  • a mat 3 of a fire-resistant material on the basis of a silica aerogel is clamped between cover panel 2 and concrete construction element 1.
  • Construction element 1 is manufactured by casting concrete into a formwork (not shown) of which the concrete cover panel 2 formed part. Prior to being placed in the formwork, concrete cover panel 2 is provided with mat 3 of a fire-resistant material, and is already provided with anchor bolts 4 at an earlier stage during the manufacture of cover panel 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Building Environments (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

Method for manufacturing a concrete construction element which is provided with a fire-resistant cover layer, comprising the steps of (i) providing a formwork for the construction element to be manufactured, (ii) casting the concrete required for the construction element in the formwork, and (iii) allowing the concrete cast in accordance with step (ii) to cure in order to obtain the construction element, wherein the formwork is at least partially formed by a fire-resistant panel, which panel is adapted for coupling to the construction element to be obtained by curing of the concrete in accordance with step (iii), and concrete construction element manufactured according to this method and tunnel provided with at least one such concrete construction element.

Description

METHOD FOR MANUFACTURING A CONCRETE CONSTRUCTION ELEMENT, AND CONSTRUCTION ELEMENT MANUFACTURED ACCORDING TO THIS METHOD
The invention relates to a method for manufacturing a concrete construction element which is provided with a fire- resistant cover layer.
Constructions of reinforced concrete in house building, utility construction or in road and hydraulic engineering are subject to increasingly strict requirements in the field of fire safety.
These requirements are for instance satisfied by manufacturing concrete partition walls in buildings, or walls and ceilings in tunnels, from a concrete mixture to which synthetic fibres or limestone parts have been added in order to make the concrete fire-resistant. The thus obtained fire- resistant concrete has the drawback that the fibres or limestone parts incorporated therein melt or degrade in the case of prolonged exposure to very high temperatures, wherein channels or cavities are formed in the concrete which make the concrete accessible to water and salts dissolved therein, as a result of which the remaining lifespan of the concrete can decrease to an unacceptable extent.
Known from WO 2006/074913 Al is a reinforced concrete floor deck which is provided on an outer side with at least one rail to which for instance a fire-retardant or heat or sound-resistant layer can be attached.
Such a concrete construction element, which is provided according to the prior art with a fire-resistant cover layer, has the inherent drawback of the additional costs involved in mounting this cover layer.
It is an object of the invention to provide a method for a construction element provided with a fire-resistant cover layer, wherein arranging of the cover layer does not result in additional costs.
This objective is achieved, and other advantages gained, with a method of the type specified in the preamble, comprising the steps of (i) providing a formwork for the construction element to be manufactured, (ii) casting the concrete reguired for the construction element in the formwork, and (iii) allowing the concrete cast in accordance with step (ii) to cure in order to obtain the construction element, for instance a fire-resistant wall element, ceiling element or floor element, wherein according to the invention the formwork is at least partially formed by a fire-resistant panel, which panel is adapted for coupling to the
construction element to be obtained by curing of the concrete in accordance with step (iii) .
It is noted that step (i) can also comprise of providing a reinforcement which is enclosed by the formwork.
In the method according to the invention the fire- resistant panel forming part of the formwork is coupled during the casting and curing of the concrete to the obtained construction element so as to form an integrated part thereof .
In an embodiment of the method according to the
invention the panel is fire-resistant in that it is
manufactured from a fire-resistant material.
In a subsequent embodiment, wherein the panel is manufactured from concrete, the panel is fire-resistant in that it is provided on a side to be directed toward the interior of the formwork with a layer of a fire-resistant material .
In a practically advantageous embodiment the panel is provided with coupling means for coupling the panel to the construction element.
The invention also relates to a concrete construction element manufactured according to the above described method, comprising a concrete first panel which is coupled on at least one side to a fire-resistant second panel, wherein the concrete first panel comprises at least one of the components cement, limestone meal, quartz-containing material, synthetic fibres, in particular polypropylene fibres, blast-furnace slag and steel fibres. The invention further relates to a concrete construction element provided with a fire-resistant cover layer and manufactured according to the above described method, comprising a concrete first panel which is coupled on at least one side to a concrete second panel, wherein the concrete second panel comprises at least one of the
components cement, limestone meal, quartz-containing
material, synthetic fibres, in particular polypropylene fibres, blast-furnace slag and steel fibres.
In an embodiment of such a concrete construction element the concrete second panel is obtained from a mixture
comprising 6-10% by weight CE I, 10-14% by weight limestone meal, 5-10% by weight blast-furnace slag, 7-9% by weight water, 60-65% by weight aggregate and 1% by weight additives and fibre material. The aggregate comprises for instance river gravel, granite or limestone. The additives comprise for instance a plasticizer, the fibre material comprises for instance synthetic fibres or steel fibres.
It has been found that in a concrete second panel of such a composite mixture a new phase, made up of the
components calcium oxide (CaO) , aluminium oxide (AI2O3) and silicon oxide (SXO2) , results at a temperature of about
1000°C, this phase having a vitreous structure and being highly fire-resistant.
In an advantageous embodiment the concrete second panel is obtained from a mixture comprising 6% by weight CEM I, 14% by weight limestone meal, 8% by weight blast-furnace slag, 7% by weight water, 64% by weight aggregate and 1% by weight additives and fibre material.
In a subsequent advantageous embodiment the concrete second panel is obtained from a mixture comprising 10% by weight CEM I, 11% by weight limestone meal, 11% by weight blast-furnace slag, 7% by weight water, 60% by weight aggregate and 1% by weight additives and fibre material.
It is noted that a concrete second panel according to the above described exemplary embodiments is also suitable per se as fire-resistant cover layer which according to the A prior art can be attached to a separately manufactured concrete first panel.
The invention further relates to a concrete construction element provided with a fire-resistant cover layer
manufactured according to the above described method and comprising a concrete first panel which is coupled on at least one side to a fire-resistant second panel, wherein the second panel is provided on its side facing toward the first panel with a layer of a non-combustible material, this layer for instance comprising a silica aerogel.
In an advantageous embodiment of a construction element according to the invention, wherein the second panel is manufactured from concrete, the first panel is coupled to the second panel by means of at least one anchor bolt.
Coupling the first panel to the second panel by means of anchor bolts during manufacture of a construction element is per se simple and is relatively inexpensive. In addition, a coupling by means of anchor bolts has the advantage that after exposure to fire, wherein the second panel has become unusable but the first panel and the anchor bolts have not, the second panel can be replaced by a fire-resistant panel which can be attached to the first panel by means of the still usable anchor bolts.
The anchor bolt is for instance manufactured from steel with a thermal conductivity coefficient λ amounting to about 50 /m.K.
The first panel is for instance manufactured from a concrete with a thermal conductivity coefficient λ amounting to about 1 W/m.K.
The second panel is for instance manufactured from a concrete with a thermal conductivity coefficient λ amounting to about 1 W/m.K.
The layer of a fire-resistant material has for instance a thermal conductivity coefficient λ amounting to about 0.01 W/m.K.
The method and a concrete construction element obtained according to this method are widely applicable in house building, utility construction and in road and hydraulic engineering .
The advantages of the invention become particularly manifest in a tunnel which is characterized by at least one concrete construction element manufactured according to the above described method. In the construction of a tunnel which must satisfy strict fire safety requirements a great
reduction in cost and construction time, compared to the case of a tunnel constructed according to a prior art method, can be realized by applying the method according to the
invention .
The invention will be elucidated hereinbelow on the basis of an exemplary embodiment and with reference to the drawing .
In the drawings fig. 1 shows a cross-section of an embodiment of a concrete construction element according to the invention.
Fig. 1 shows a cross-section 5 through a reinforced concrete construction element 1 (reinforcement not shown) which is provided with a concrete cover panel 2 coupled thereto by anchor bolts 4, as seen along a line through anchor bolts 4. A mat 3 of a fire-resistant material on the basis of a silica aerogel is clamped between cover panel 2 and concrete construction element 1.
Construction element 1 is manufactured by casting concrete into a formwork (not shown) of which the concrete cover panel 2 formed part. Prior to being placed in the formwork, concrete cover panel 2 is provided with mat 3 of a fire-resistant material, and is already provided with anchor bolts 4 at an earlier stage during the manufacture of cover panel 2.

Claims

1. Method for manufacturing a concrete construction element (1) which is provided with a fire-resistant cover layer (2), comprising the steps of
(i) providing a formwork for the construction element (1) to be manufactured,
(ii) casting the concrete required for the construction element (1) in the formwork, and
(iii) allowing the concrete cast in accordance with step
(ii) to cure in order to obtain the construction element (1), characterized in that the formwork is at least partially formed by a fire-resistant panel (2), which panel (2) is adapted for coupling to the construction element (1) to be obtained by curing of the concrete in accordance with step
(iii) -
2. Method as claimed in claim 1, wherein the panel (2) is manufactured from a fire-resistant material.
3. Method as claimed in claims 1-2, wherein the panel
(2) is manufactured from concrete which is provided on a side to be directed toward the interior of the formwork with a layer (3) of a fire-resistant material.
4. Method as claimed in any of the claims 1-3, wherein the panel (2) is provided with coupling means (4) for
coupling the panel (2) to the construction element (1).
5. Construction element (1, 2) provided with a fire- resistant cover layer and manufactured according to a method as claimed in any of the claims 1-4, comprising a concrete first panel (1) which is coupled on at least one side to a fire-resistant second panel (2) , characterized in that the concrete first panel (1) comprises at least one of the components cement, limestone meal, quartz-containing
material, synthetic fibres, in particular polypropylene fibres, blast-furnace slag and steel fibres.
6. Construction element (1, 2) provided with a fire- resistant cover layer and manufactured according to a method as claimed in any of the claims 1-4, comprising a concrete first panel (1) which is coupled on at least one side to a concrete second panel (2), characterized in that the concrete second panel (2) comprises at least one of the components cement, limestone meal, quartz-containing material, synthetic fibres, in particular polypropylene fibres, blast-furnace slag and steel fibres.
7. Construction element as claimed in claim 6,
characterized in that the concrete second panel (2) is obtained from a mixture comprising 6-10% by weight CEM I, 10- 14% by weight limestone meal, 5-10% by weight blast-furnace slag, 7-9% by weight water, 60-65% by weight aggregate and 1% by weight additives and fibre material.
8. Construction element as claimed in claim 7,
characterized in that the concrete second panel (2) is obtained from a mixture comprising 6% by weight CEM I, 14% by weight limestone meal, 8% by weight blast-furnace slag, 7% by weight water, 64% by weight aggregate and 1% by weight additives and fibre material.
9. Construction element as claimed in claim 7,
characterized in that the concrete second panel (2) is obtained from a mixture comprising 10% by weight CEM I, 11% by weight limestone meal, 11% by weight blast-furnace slag, 7% by weight water, 60% by weight aggregate and 1% by weight additives and fibre material.
10. Construction element (1, 2) provided with a fire- resistant cover layer and manufactured according to a method as claimed in any of the claims 1-4, comprising a concrete first panel (1) which is coupled on at least one side to a fire-resistant second panel (2), characterized in that the second panel (2) is provided on its side facing toward the first panel (1) with a layer (3) of a non-combustible material .
11. Construction element (1, 2) as claimed in claim 10, characterized in that the layer of the non-combustible material (3) comprises a silica aerogel.
12. Construction element (1, 2) as claimed in any of the claims 5-11, wherein the second panel (2) is manufactured from concrete, characterized in that the second panel (2) is coupled to the first panel (1) by means of at least one anchor bolt ( 4 ) .
13. Construction element (1, 2) as claimed in claim 12, characterized in that the anchor bolt (4) is manufactured from steel with a thermal conductivity coefficient λ
amounting to about 50 W/m.K.
14. Construction element (1, 2) provided with a fire- resistant cover layer (2) as claimed in any of the claims 5- 13, characterized in that the first panel (1) is manufactured from a concrete with a thermal conductivity coefficient λ amounting to about 1 W/m.K.
15. Construction element (1, 2) provided with a fire- resistant cover layer as claimed in any of the claims 5-13, characterized in that the second panel (2) is manufactured from a concrete with a thermal conductivity coefficient λ amounting to about 1 W/m.K.
16. Construction element (1, 2) provided with a fire- resistant cover layer as claimed in any of the claims 10-15, characterized in that the layer (3) of a fire-resistant material has a thermal conductivity coefficient λ amounting to about 0.01 W/m.K.
17. Tunnel, characterized by at least one concrete construction element (1, 2) manufactured according to a method as claimed in any of the claims 1-4.
18. Cover panel (2) of fire-resistant concrete for covering a concrete first panel (1) , characterized in that the cover panel (2) comprises at least one of the components cement, limestone meal, quartz-containing material, synthetic fibres, in particular polypropylene fibres, blast-furnace slag and steel fibres.
19. Cover panel (2) as claimed in claim 18,
characterized in that it is obtained from a mixture
comprising 6-10% by weight CEM I, 10-14% by weight limestone meal, 5-10% by weight blast-furnace slag, 7-9% by weight water, 60-65% by weight aggregate and 1% by weight additives and fibre material.
20. Cover panel (2) as claimed in claim 19,
characterized in that it is obtained from a mixture
comprising 6% by weight CEM I, 14% by weight limestone meal, 8% by weight blast-furnace slag, 7% by weight water, 64% by weight aggregate and 1% by weight additives and fibre
material .
21. Cover panel (2) as claimed in claim 19,
characterized in that it is obtained from a mixture
comprising 10% by weight CEM I, 11% by weight limestone meal, 11% by weight blast-furnace slag, 7% by weight water, 60% by weight aggregate and 1% by weight additives and fibre
material .
EP11811421.4A 2010-12-22 2011-12-21 Method for manufacturing a concrete construction element, and construction element manufactured according to this method Withdrawn EP2655028A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2005895A NL2005895C2 (en) 2010-12-22 2010-12-22 METHOD FOR MANUFACTURING A FIRE-RESISTANT CONSTRUCTION ELEMENT AND ACCORDING TO THAT METHOD MANUFACTURED WALL, CEILING AND FLOOR ELEMENT
PCT/NL2011/050881 WO2012087134A1 (en) 2010-12-22 2011-12-21 Method for manufacturing a concrete construction element, and construction element manufactured according to this method

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JP2001121527A (en) * 1999-10-29 2001-05-08 Asahi Glass Co Ltd Composite panel and method for manufacturing the same

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GB2196660B (en) * 1986-10-29 1991-06-26 Shimizu Construction Co Ltd Wire mesh truss used as building wall element
US5735090A (en) * 1995-08-08 1998-04-07 Papke; William Modular foundation construction and method
CA2170681A1 (en) * 1996-02-29 1997-08-30 Vittorio De Zen Insulated wall and components therefor
EP1690991A1 (en) 2005-01-13 2006-08-16 Rockwool International A/S A concrete product for a building structure

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JP2001121527A (en) * 1999-10-29 2001-05-08 Asahi Glass Co Ltd Composite panel and method for manufacturing the same

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WO2012087134A1 (en) 2012-06-28

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