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

Prepare for the A-5 Excavating, Grading and Oil Surfacing Test with flashcards and multiple choice questions. Succeed with detailed explanations and hints for each question. Ensure your success in the exam!

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.

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