What does trapped moisture within the pavement layers create?

Trapped moisture within the pavement layers can lead to surface blisters and upheavals. This occurs because moisture that is trapped can create pressure beneath the pavement surface, especially when temperatures rise and cause the moisture to expand. As the pressure builds, it can result in blisters forming, which may ultimately compromise the integrity of the asphalt surface. This issue is critical for inspectors to monitor, as it can affect not only the appearance of the pavement but also its structural performance and longevity. Identifying and addressing moisture issues during and after placement is vital for ensuring the durability and reliability of the pavement.