Effect of heat on concrete strength
Effect of heat on concrete strength
(OP)
I am looking to find out if extreme heat can have an adverse effect on the strength of concrete?
There will be some welding done around an anchor and there will a lot of heat transmitted to the concrete behind the 3/4" backing plate...will this affect the capacity of the anchor/concrete system?
There will be some welding done around an anchor and there will a lot of heat transmitted to the concrete behind the 3/4" backing plate...will this affect the capacity of the anchor/concrete system?





RE: Effect of heat on concrete strength
The most common effect of heat on concrete is spalling due to moisture expanding in the pores, and carbonation of the surface, usually to a depth less than 1/8".
RE: Effect of heat on concrete strength
RE: Effect of heat on concrete strength
For welding in this situation it is best to perform multiple pass fillet welds and allow sufficient cooling between passes to prevent excessive heat buildup. If necessary, each pass may be done sections at a time. With a 3/4" thick plate, I don't see a real problem with overheating the concrete if the plate is allowed to cool between passes.
Greg
RE: Effect of heat on concrete strength