What state of aggregate provides the best adhesion with asphalt cement?

What state of aggregate provides the best adhesion with asphalt cement?

• A. Cold and wet
• B. Hot and dry
• C. Warm and humid
• D. Cool and dry

Answer: (B)

The state of aggregate that provides the best adhesion with asphalt cement is hot and dry. This is because when the aggregate is hot, the temperature helps the asphalt cement to flow and bond more effectively with the aggregate particles. Hot temperatures reduce the viscosity of the asphalt, allowing it to penetrate more thoroughly into the surface of the aggregate, which enhances the bonding strength. Furthermore, dry conditions are crucial because moisture on the aggregate surface can hinder the adhesion process. If the aggregate is wet, the presence of water can create a barrier between the asphalt and the aggregate, leading to poor bonding and potential issues like stripping over time. Therefore, having a hot and dry environment is conducive to achieving optimal adhesion between asphalt cement and aggregate, resulting in better performance of the paved surfaces.

The state of aggregate that provides the best adhesion with asphalt cement is hot and dry. This is because when the aggregate is hot, the temperature helps the asphalt cement to flow and bond more effectively with the aggregate particles. Hot temperatures reduce the viscosity of the asphalt, allowing it to penetrate more thoroughly into the surface of the aggregate, which enhances the bonding strength.

Furthermore, dry conditions are crucial because moisture on the aggregate surface can hinder the adhesion process. If the aggregate is wet, the presence of water can create a barrier between the asphalt and the aggregate, leading to poor bonding and potential issues like stripping over time. Therefore, having a hot and dry environment is conducive to achieving optimal adhesion between asphalt cement and aggregate, resulting in better performance of the paved surfaces.