Vermiculite Applications
Acoustic
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 Doubling
the mass of a structure
normally reduces sound
transmission through it
by one quarter or 6db –
this is known as “mass
law”.
Traditionally it
was thought that the
incorporation of heavy
materials into a
building fabric was
necessary in order to
achieve a high level of
sound absorption, by
resisting the sound
energy attempting to
pass through it.
In many cases,
however, it is
undesirable to use heavy
building materials in
modern construction and
space constraint
dictates that it is
impractical to install
them in existing
buildings.
Builders and
architects are thus
considering alternative
lightweight acoustical
dampening materials, and
here the special
properties of
vermiculite prove to be
of interest. |
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Testing
Testing of Vermiculite
was undertaken by AIRO
(Report No. L/2840)
“Acoustic Investigation
& Research Organization
Ltd” who compared
Vermiculite to National
Standards and reported
the results as follows
using sound absorption
coefficients.
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