Device for preventing sound transmission through an aperture or a production-related duct in a wall, and a method for soundtight closure of an aperture or a production-related duct in a wall

Abstract

A device for preventing sound transmission through a spacer tube, an aperture or a duct (1) is realized by inserting a damping body (21) which can be cost-effectively mass-produced and can be inserted through the apertures in the wall (15) without any effort and with correspondingly low cost. This eliminates the need for laborious plugging with rock wool or liquid mortar.

1 . A device for preventing transmission of sound through an aperture or duct for clamping rods ( 12 ) in a wall ( 15 ) of concrete structures, the device comprising:
 a sound-damping or sound-absorbing material formed as a damping body ( 21 ) that is configured to be pushed into the aperture or duct after the wall is finished.   
     
     
         2 . The device as claimed in  claim 1 , wherein the sound-damping or sound-absorbing material is encased in a tubular sleeve ( 27 ) or a hose-shaped element, which is configured to be pushed in the aperture. 
     
     
         3 . The device as claimed in  claim 1 , wherein the sound-damping or sound absorbing material comprises at least one of concrete, mortar, fibrous material, foam or plastic that is placed in a sleeve ( 27 ). 
     
     
         4 . The device as claimed in  claim 3 , the sleeve ( 27 ) comprises a wound tube of paper or plastic, a hose, or a tube. 
     
     
         5 . The device as claimed in  claim 1 , wherein the damping body ( 21 ) has a length which is equal to or shorter than a length of the aperture. 
     
     
         6 . The device as claimed in  claim 5 , further comprising that the damping body ( 21 ) is fastened to a closure plug ( 25 ) configured for closing the aperture ( 1 ), and the damping body ( 21 ) is fastened to the closure plug. 
     
     
         7 . The device as claimed in  claim 6 , wherein the closure plug ( 25 ) that is configured for closing the aperture ( 1 ) is formed as part of the damping body ( 21 ), and the damping ( 21 ) is shorter than a length of the aperture ( 1 ), or the closure plug ( 25 ) is formed on the damping body ( 21 ) on at least one side. 
     
     
         8 . The device as claimed in  claim 6 , wherein the closure plug ( 25 ) consists of damping or sound-absorbing material. 
     
     
         9 . The device as claimed in  claim 6 , further comprising encircling fins ( 26 ) formed on at least one of the closure plug ( 25 ) or on a sleeve ( 27 ) that encases the sound-damping or sound-absorbing material. 
     
     
         10 . The device as claimed in  claim 2 , further comprising a flocking or a foam covering applied to the casing of the sleeve ( 27 ). 
     
     
         11 . A method for sound-tight closing of an aperture in a wall ( 15 ) of concrete, the method comprising:
 after the concreting operation, introducing a damping body ( 21 ) formed of a sound-damping or sound-absorbing material, in an abutting contact with an inner side of the aperture in an airtight manner, from one or both sides of the wall ( 15 ).