What can result from using moisture-heavy aggregates in asphalt production?

Using moisture-heavy aggregates in asphalt production leads to an increased risk of stripping, which is the separation of the asphalt binder from the aggregate. When aggregates contain a significant amount of moisture, it can interfere with the bonding process between the asphalt binder and the aggregates. Stripping is detrimental because it compromises the strength and durability of the asphalt mixture, resulting in potential early failure of the pavement.

This issue arises primarily because the presence of water can prevent proper adhesion of the asphalt to the surface of the aggregates. When water is present, it can create a barrier that hinders the effective bonding of the binder. Over time, the moisture can lead to the deterioration of the pavement structure, causing issues such as raveling and reduced skid resistance.

Understanding the implications of moisture in aggregates is crucial for achieving a robust and reliable asphalt mixture. Reducing moisture content before the mixing process ensures better performance of the asphalt pavement and enhances its lifespan.