Composite structural member with thermal and/or sound insulation characteristics for building construction

Abstract

The invention relates to a composite structural member with thermal and/or sound insulation characteristics for a building, comprising an insulating board shaped as web part and at least one protective element whereby the web part has two opposing abutting faces and two main surfaces being arranged rectangular to the abutting faces, whereby the board is made of mineral fibres and a binder and whereby the at least one protective element is substantially U-shaped in cross section, having two legs erecting parallel to each other and being connected to the web part, whereby abutting faces of at least one web parts are covered by protective elements, which in combination with said web part take up loads parallel and/or rectangular to the main surfaces of the web part and which are not in direct contact to each other.

1 . Composite structural member with thermal and/or sound insulation characteristics for a building, comprising an insulating board ( 26 ) shaped as web part and at least one protective element ( 27 ,  28 ;  31 ;  35 ), whereby the web part has two opposing abutting faces and two main surfaces being arranged rectangular to the abutting faces, whereby the board ( 26 ) is made of mineral fibres and a binder and whereby the at least one protective element ( 27 ,  28 ;  31 ;  35 ) is substantially U-shaped in cross section, having two legs erecting parallel to each other and being connected to the web part, whereby abutting faces of at least one web parts are covered by protective elements ( 27 ,  28 ;  31 ;  35 ), which in combination with said web part take up loads parallel and/or rectangular to the main surfaces of the web part and which are not in direct contact to each other. 
     
     
         2 . Composite structural member according to  claim 1 , characterized in that the web part has a bulk density of 150 kg/m 3  to 600 kg/m 3 , preferably 150 kg/m 3  to 400 kg/m 3  and more preferably of at least 180 kg/m 3 . 
     
     
         3 . Composite structural member according to  claim 1  or  2 , characterized in that the web part ( 26 ) is made of at least two layers being arranged sandwich like and connected to each other. 
     
     
         4 . Composite structural member according to  claim 3 , characterized in that the layers of the web part have at least one main surface being capable to be connected with an adhesive. 
     
     
         5 . Composite structural member according to one of the  claims 1  to  4 , characterized in that the two protective elements ( 27 ,  28 ;  31 ;  35 ) are overlapping each other on opposed main surfaces of the web part. 
     
     
         6 . Composite structural member according to one of the  claims 1  to  5  characterized in that the second protective element ( 27 ,  28 ;  31 ;  35 ) is L-, U- or T-shaped in cross section. 
     
     
         7 . Composite structural member according to one of the  claims 1  to  6 , characterized in that the two protective elements ( 27 ,  28 ;  31 ;  35 ) are connected to each other by connecting means like rivets, screws or the like which run perpendicular to the main surfaces of the web part. 
     
     
         8 . Composite structural member according to one of the  claims 1  to  7 , characterized in that two layers of the web part are connected by at least one clamp like protective elements ( 27 ,  28 ;  31 ;  35 ). 
     
     
         9 . Composite structural member according to one of the  claims 1  to  8 , characterized in that the protective elements ( 27 ,  28 ;  31 ;  35 ) are made from sheet metal, especially steel and/or aluminium with a thickness of 0.5 mm to 3.0 mm. 
     
     
         10 . Composite structural member according to one of the  claims 1  to  9 , characterized in that at least one leg of the protective element ( 27 ,  28 ;  31 ;  35 ) is inserted into one slit of the web part, being arranged in one abutting face of the web part. 
     
     
         11 . Composite structural member according to one of the  claims 1  to  10 , characterized in that at least one protective element ( 27 ,  28 ;  31 ;  35 ) has a width being larger than the width of the abutting face of the web part. 
     
     
         12 . Building having at least two building elements ( 1 ) with a composite structural member ( 13 ) according to one of the  claims 1  to  11  being arranged between the building elements ( 1 ), each building element ( 1 ) comprising
 an insulating element ( 2 ) made of mineral fibres, comprising two large surfaces extending substantially parallel and with a distance to each other and four lateral surfaces extending substantially at right angles to the large surfaces, and 
 a frame made of sheet metal and being arranged at least at two lateral surfaces being arranged at opposite sides of the insulating element ( 2 ), 
 
       wherein the frame has integrated joint elements being formed correspondingly to each other and load bearing and wherein at least one integrated joint element comprises the composite structural member ( 13 ) having thermal and/or sound insulation characteristics and being made of mineral fibres and a binder whereby the corresponding integrated joint elements of the building elements ( 1 ) are connected to each other in a form fitted way and by an adhesive being provided between the composite structural member ( 13 ) and the building elements ( 1 ) facing to each other. 
     
     
         13 . Building according to  claim 12 , characterized in that the adhesive between the composite structural member ( 13 ) and the building elements is non combustible. 
     
     
         14 . Building according to  claim 12  or  13 , characterized in that the composite structural member ( 13 ) is connected to the insulating element ( 2 ) and/or the integrated joint elements by an adhesive, preferably with an incorporated reinforcing element, for example a fibrous web. 
     
     
         15 . Building according to one of the  claims 12  to  14 , characterized in that each integrated joint element has at least two legs extending parallel to each other and being made from the sheet metal of the frame, which is connected to the insulating element ( 2 ), especially to the main surfaces of the insulating element ( 2 ) and in that each leg is formed by bending a free end of the sheet metal. 
     
     
         16 . Composite structural member with thermal and/or sound insulation characteristics for a building, consisting of an insulating board ( 26 ) made of mineral fibres and a binding agent and shaped as web part and two protective elements ( 31 ) being arranged at opposing ends of the board ( 26 ), each covering an abutting surface of the board ( 26 ) and each having two legs ( 32 ,  33 ) being in contact with one of the large surfaces of the board, characterized in that the board ( 26 ) has a bulk density of 150 kg/m 3  to 600 kg/m 3  preferably 150 kg/m 3  to 400 kg/m 3  and more preferably of 180 kg/m 3  to 400 kg/m 3 . 
     
     
         17 . Composite structural member according to  claim 16 , characterized in that the board ( 26 ) is made of two layers. 
     
     
         18 . Composite structural member according to  claim 16  or  17  characterized by a bearing capacity of >60 kN when utilized as a column and/or >15 kN when utilized as a beam. 
     
     
         19 . Composite structural member according to one of the  claims 16  to  18 , characterized in that the two legs ( 32 ,  33 ) of each protective element ( 31 ) are connected by at least one rivet or screw penetrating the board ( 26 ). 
     
     
         20 . Composite structural member according to one of the  claims 16  to  19 , characterized in that the protective element ( 31 ) is made of sheet metal, e.g. of steel or aluminium or of fibre reinforced resin, especially resin reinforced by carbon fibres or fiberglass. 
     
     
         21 . Composite structural member according to one of the  claims 16  to  20 , characterized in that the board ( 26 ) is made of mineral fibres in an amount of 90 to 99 wt-% of the total weight of starting materials in the form of a collected web and a binding agent in an amount of 1 to 10 wt-% of the total weight of starting materials, whereby the collected webs of mineral fibres is subjected to a disentanglement process, whereby the mineral fibres are suspended in a primary air flow, whereby the mineral fibres are mixed with the binding agent before, during or after the disentanglement process to form a mixture of mineral fibres and binding agent and whereby the mixture of mineral fibres and binding agent is pressed and cured to provide a consolidated composite with a bulk density of 400 kg/m 3  to 600 kg/m 3 , especially 500 kg/m 3 .