Author Topic: sand as a sound barrier  (Read 5923 times)

john M.

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sand as a sound barrier
« on: December 14, 2000, 03:47:04 PM »
I am working for a company that is developing quiet
industrial equipment for in plant use. There are
electric motors and hydraulic pumps involved.  My
supervisior asked me to investigate the possibility
of using sand to block the sound.  We would build a
double wall enclosure and put the sand between the
walls. The thickness would be as required to reduce
the sound from 75-80db to around 60db.  
Has anyone heard of using sand in this way and if so
what where the results?
any comments or information would be appreciated.
thanks John

bjnash

  • Guest
Re: sand as a sound barrier
« Reply #1 on: December 14, 2000, 05:32:28 PM »
: I am working for a company that is developing quiet
: industrial equipment for in plant use. There are
: electric motors and hydraulic pumps involved.  My
: supervisior asked me to investigate the possibility
: of using sand to block the sound.  We would build a
: double wall enclosure and put the sand between the
: walls. The thickness would be as required to reduce
: the sound from 75-80db to around 60db.  
: Has anyone heard of using sand in this way and if so
: what where the results?
: any comments or information would be appreciated.
: thanks John
Sand can be an effective material, but not normally in a vertical enclosure.  A masonry wall would be far more effective than building a heavy-duty wall to hold the sand, which might pass sound quite readily.