What is the typical range for the mixing temperature of hot mix asphalt?

The typical range for the mixing temperature of hot mix asphalt is between 275°F and 350°F. This temperature range is crucial for ensuring proper mixing of the asphalt binder with the aggregates, as it promotes effective coating of the aggregate particles and helps achieve the desired workability when the mix is placed. It also facilitates the oxidation of the asphalt, which contributes to the performance and durability of the final pavement.

Temperature plays a significant role; mixing at lower temperatures may result in inadequate coating and poor compaction, while excessively high temperatures can lead to degradation of the asphalt binder. The specified range helps balance these two concerns, ensuring the mix maintains its properties throughout construction and during service life.