Who should be consulted for recommendations on optimum mixing/compaction temperatures for modified binders?

• A. The project manager
• B. The binder supplier
• C. The asphalt plant operator
• D. The quality assurance team

Answer: (B)

The binder supplier is the best source for recommendations on optimum mixing and compaction temperatures for modified binders. This is because binder suppliers have extensive knowledge and expertise regarding the materials they produce. They understand the specific properties of their modified binders, including how they behave at different temperatures during mixing and compaction. This information is critical because mixing and compaction temperatures significantly affect the performance and longevity of the asphalt mixture.

The binder supplier can provide detailed technical data, including temperature ranges that ensure the binder achieves the desired workability without compromising its performance properties, such as durability and resistance to rutting. By consulting the binder supplier, project teams can make informed decisions that enhance overall project quality and longevity.