What is a common prevention strategy utilized to enhance bonding in asphalt mixes in the presence of moisture?

Utilizing anti-strip agents is a common prevention strategy to enhance bonding in asphalt mixes when moisture is present. These agents work by chemically modifying the adhesive properties of the asphalt, making it more resistant to moisture-induced damage. Moisture can negatively affect the bond between the asphalt and aggregates, leading to stripping, which is the separation of the asphalt binder from the aggregate. By incorporating anti-strip agents, the adhesion is improved, leading to a more durable and resilient asphalt mixture.

The other strategies have their own purposes but do not directly address the issue of moisture-induced bonding. For instance, using heat during mixing may help to improve the workability of the asphalt or facilitate a better mix but does not specifically target moisture-related issues. Incorporating additional aggregates can affect the composition and performance of the mix, but it does not inherently solve the moisture bonding problem. Applying surface sealers is a method of protecting the completed pavement from moisture infiltration and wear but does not directly enhance the initial bonding of asphalt mixes.