Mass Concrete in Power Plant Applications
Mass Concrete in Power Plant Applications
(OP)
Has anyone used temperature monitoring and cooling methods when pouring major equipment foundations at power plants? I am currently specifying that my 6 to 8 foot thick foundations and tabletops conform to the temperature control/monitoring requirements of ACI 207. I have been told that this "is never done for power plants". Since PCA says >3' is mass concrete and ACI 351 says to account for the requirements of ACI 207 for major equipment foundations, i am confused as to how this has never been done. Any help will be much appreciated.






RE: Mass Concrete in Power Plant Applications
What we did use in the summer was shaved ice (and lots of it) instead of mix water. On the hottest days there could be 100% ice. Placements were scheduled to start in the very early morning hours. Concrete temperature of each truck was checked, and accepted/rejected per ACI requirements. Wet curing was used.
One of these plants has now been operational for well over 20 years - no problems "have come back to haunt us".
www.SlideRuleEra.net
RE: Mass Concrete in Power Plant Applications
RE: Mass Concrete in Power Plant Applications
I think the main place where cooling becomes critical is in concrete for dams (Hoover Dam comes to mind) and that volume of mass concrete. The interior poured concrete heat of hydration has no place to go and is further increased by the surrounding pours. But it takes many feet of concrete for this effect builds enough to become a problem.
RE: Mass Concrete in Power Plant Applications
Hope this info was helpful
RE: Mass Concrete in Power Plant Applications