Re: Heavy concrete info

[Franz Schoenhofer <schoenho@via.at>]

At 13:26 28.03.2000 -0600, you wrote:
>
>
>Hello radsafers,
>
>I have designed a shielding enclosure specifying "heavy concrete", with a
>density of ~3.2 g/cc rather than 2.35 for ordinary concrete. 

I do not know, what the shielding is intended for - if it is for shielding
the surroundings from an accelerator or a radionuclide source or an x-ray
machine then "heavy" concrete should rather refer to the average mass
number of the constituents, baryta being the most favourable material
unless you want to go to depleted uranium....... If you want to shield your
detectors from environmental radiation in order to achieve extremely low
backgrounds you rather should test for the inherent radioactivity of the
concrete.

Regards,

Franz


Franz Schoenhofer
Habicherg. 31/7
A-1160 Vienna
Austria
Tel.: +43-1-495 53 08
Fax.: same number
mobile phone: +43-664-338 0 333
e-mail: schoenho@via.at


Office:
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Bundeskanzleramt (Federal Chancellery), VI/8
Radetzkystr. 2
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AUSTRIA

phone: -43-1-71172-4458
fax: -43-1-7122331

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