How often should the penetration of asphalt binder be tested according to the Quality Control Program?

The correct frequency for testing the penetration of asphalt binder according to the Quality Control Program is weekly. This regular testing is crucial for ensuring that the asphalt binder used in pavement construction meets the required specifications for consistency, performance, and durability.

Testing weekly allows for timely adjustments to the asphalt mixture if any variation in properties is detected, thereby preventing defects in the paving material that could lead to long-term issues in road performance. Frequent testing helps maintain quality control throughout the production process, ensuring that the asphalt remains within the acceptable penetration range, thereby enhancing its ability to perform well under traffic load and environmental conditions.

Maintaining such a schedule helps to provide an accurate and reliable assessment of the asphalt binder's characteristics, ensuring compliance with project specifications and ultimately contributing to the longevity and safety of the paved surface.