What is one effective method to prevent new concrete from freezing in cold weather?

Using insulated tarps is an effective method to prevent new concrete from freezing in cold weather as they provide an additional layer of insulation, helping to retain heat within the curing concrete. Proper curing is crucial for the strength and durability of the concrete, and insulated tarps can effectively keep the temperature of the concrete above freezing while it is still setting. This method protects the freshly poured concrete from cold winds and keeps it at an optimal temperature for hydration, ensuring proper curing and strength gain.

While heating blankets can also provide warmth, they may not cover large areas effectively or can be cumbersome to set up. Adding salt to the concrete mix is not advisable because it can negatively impact the integrity and long-term durability of the concrete. Covering with plywood can provide some insulation, but it may not be as effective as insulated tarps. Thus, insulated tarps offer the most efficient solution for maintaining the necessary temperature during the curing process in cold weather conditions.