Plan cold-weather concrete placement and protection for flatwork

Steps

1. Confirm ambient and forecasted temperatures trigger cold-weather procedures per general ACI 306 practice based on the expected temperature trend over several consecutive days, not a single day's reading.
2. Plan concrete temperature at placement, insulation/enclosure, and heating strategy to maintain adequate curing temperature until the concrete reaches sufficient strength to resist freezing damage.
3. Avoid adding calcium chloride accelerators or other admixtures inconsistent with the project spec or with reinforcing/embedded metal requirements without confirming compatibility.
4. Protect exposed slab edges and corners, which cool fastest, with extra insulation, and monitor concrete temperature with sensors rather than relying on ambient air temperature alone.
5. Base form/protection removal timing on measured concrete maturity or strength rather than a fixed calendar duration when temperatures during curing were marginal.