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Re: Max. temperature for concrete

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Bhavin,

200 degree C is nearly 400 degree F so you are right at the limits.  I would suggest you do two things.  The first is that 200 degree C seems a little high for liquid sulphur so double check if this is really the normal operating temperature or some kind of upset temperature.  The other thing you can do is perform a temperature gradient study considering the concrete and soil are very good heat sinks.  You may have to work with your Mechanical Engineers for this thermal analysis.  You may find that the majority of the temperature in the concrete is much lower than 200 degree C.

Thomas Hunt, S.E.
Fluor



Bhavin Shah <bhavin.design(--nospam--at)gmail.com>
06/25/2009 09:21 AM
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Re: Max. temperature for concrete





Tom,
 
Thanks for the reply. As mentioned, after considering 5000psi concrete & silica fume, can concrete take temperature around 200 degree centigrade, without provision of any inside insulation. Reply for the same will be highly appriciated.
 
Thanks
Bhavin
 


 

On 6/25/09, Tom.Hunt(--nospam--at)fluor.com <Tom.Hunt(--nospam--at)fluor.com> wrote:

Bhavin,


There are a couple of PCA documents that indicate for non-fire related cases concrete can sustain continuous temperatures up to approximately 400 degree F.  Temperatures over 500 degree F will definitely cause deterioration.  ACI 349 for Nuclear Facilities takes a very conservative approach and limits concrete temperatures during normal operation to 150 degree F and 200 degree F for local areas such as wall penetrations and for accidental or short term exposure 350 degree F and 650 degree F for localized steam or water jets.  For a sulphur storage pit be sure to specify a high performance concrete with minimum 5000 psi with a good mineral additive such as 7 to 10 percent silica fume.


Thomas Hunt, S.E.

Fluor



Bhavin Shah <bhavin.design(--nospam--at)gmail.com>
06/25/2009 08:46 AM

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Max. temperature for concrete







Pl. let me know that what is the maximum temperature bare concrete can withstand, in case of liqquid sulphur storage pit (concrete strength = 4000 psi, crack free design).
 
Thanks
Bhavin
 
 

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