Cold weather Concrete protection after curing
Cold weather Concrete protection after curing
(OP)
What is the proceedure in protecting concrete after cure.
What should be use to prevent shear pockets and anchor bolt sleeve from freezing and damaging the concrete.
What should be use to prevent shear pockets and anchor bolt sleeve from freezing and damaging the concrete.





RE: Cold weather Concrete protection after curing
Specific guidelines are provided in ACI 306, Section 5, including a table (Table 3.1) on minimum temperatures at various times in the placement, initial, and final curing of the concrete.
RE: Cold weather Concrete protection after curing
RE: Cold weather Concrete protection after curing
RE: Cold weather Concrete protection after curing
In my experience, only concrete that has been grossly unprotected when cold temperatures are experienced is in any jeopardy of actually freezing, at least for the first 3 days. Simple insulating blankets are often sufficient to keep the concrete warm enough to prevent free water from freezing. In fact, the actual freezing point of concrete is well below 0 C, somewhere near -12 and -14 C. Also, air-entrained concrete can likely withstand one freeze-thaw cycle once it reaches about 500psi, and multiple cycles once it reaches 70% of it's design strength.
Hope this helps.
--John Gnaedinger