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Re: question: heat endurance of concrete

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Over extended time periods at high temperature concrete does lose strength,
but I can't give you accurate details.  There is an engineer working around
the Hanford Nuclear Reservation in Washington State who has extensive
knowledge of this subject.  He's been studying the buried tanks that contain
mixtures of HOT radioactive wastes.  These are concrete tanks designed
originally for aviation fuel storage.   The design was pressed into service
during WWII when the A-bomb work went on and then just continued to be used.
Major problem now.

You'll need to contact some engineers around Hanford to get his name, or
perhaps the Struct Engrs Assoc of Oregon where he gave a hair-raising
presentation about a year ago.  Worth your time if you are serious.

Laurence B. Oeth PE
#8 Garibaldi
Lake Oswego, OR 97035
503.636.3033
----- Original Message -----
From: cahyo sumeru <sumeru(--nospam--at)engineer.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Tuesday, May 08, 2001 11:03 PM
Subject: question: heat endurance of concrete


> List,
> I need assistance on how far the normal concrete endurance undergoes
> continous heat of 50 to 160 centigrade (celcius) - not to exceed 300
> Fahrenheit. All the literature discuss only the fire resistance, which
> higher temperature but a short term (says 4 hours)than the case we faced.
> Will the concrete softened after a certain period?
> any comment/ suggestion/ assistance will be most appreciated.
>
> Regard,
> Cahyo Sumeru
> Structural Engineer
> BEE - Bandung Indonesia
>
>
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