Which type of binder would you expect to find in a cold climate application?

In cold climate applications, it is important to select a binder that can withstand lower temperatures without becoming too brittle, which can lead to cracking and failure of the asphalt layer. The proper selection is crucial for the longevity and durability of the pavement.

The binder PG 64-28 is specifically designed for environments that experience cold temperatures. The "64" indicates that it can handle high temperatures up to 64°C, while the "-28" indicates that it can perform well at cold temperatures down to -28°C. This makes it suitable for regions that endure harsh winters, as it maintains the necessary flexibility and performance to cope with the thermal stresses that come with freezing and thawing cycles.

On the other hand, binders with higher numerical values for the high temperature range (like PG 70-28 or PG 76-22) are typically designed for warmer climates and are not as appropriate for cold weather conditions due to their tendency to become brittle in colder temperatures. Meanwhile, PG 58-34 might not provide adequate performance at the higher temperatures that can occur in warmer seasons, despite its lower cold temperature rating. Therefore, PG 64-28 stands out as the most balanced option for cold climate applications, ensuring the pavement remains flexible and resilient in extreme