Re: Heavy concrete info

[Dave Brown <david.brown@nist.gov>]

>I have designed a shielding enclosure specifying "heavy concrete", with a
>density of ~3.2 g/cc rather than 2.35 for ordinary concrete. Our construction
>people have no idea where to get this product. It seems that heavy concrete
>can be mixed by adding magnetite or barytes to normal concrete (see Chilton
>et al., "Principles of Radiation Shielding"). Are there suppliers that can
>provide a mixture in the right proportions? I would appreciate any information
>and pointers.
>Thank you in advance
>
>Vashek Vylet
Check out Reactor Experiments, they can probably help you or direct you to 
someone who can.....you could also try making it yourself.....

http://www.nnc-usa.com/products_r.html


Regards,

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dave Brown, CHP
National Institute of Standards and Technology
100 Bureau Drive, Stop 3543
Bldg 235 Rm A136
Gaithersburg, MD  20899-3543

301-975-5810 - office
301-921-9847 - fax
david.brown@nist.gov
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