Thursday, June 25, 2009

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@fluor.com <Tom.Hunt@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@gmail.com>
06/25/2009 08:46 AM
Please respond to seaint
To
"seaint@seaint.org" <seaint@seaint.org>
cc
Subject
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
 
 
------------------------------------------------------------ The information transmitted is intended only for the person  or entity to which it is addressed and may contain  proprietary, business-confidential and/or privileged material.   If you are not the intended recipient of this message you are  hereby notified that any use, review, retransmission, dissemination,  distribution, reproduction or any action taken in reliance upon  this message is prohibited. If you received this in error, please  contact the sender and delete the material from any computer.    Any views expressed in this message are those of the individual  sender and may not necessarily reflect the views of the company.   ------------------------------------------------------------