When dealing with sensitive aggregate, controlled drying in a regulated oven is recommended.

• A. False
• B. True
• C. Not specified
• D. Sometimes

Answer: (B)

Moisture and heat control of aggregate are essential for good asphalt mix performance. Some aggregates are sensitive to heat and can be damaged or deformed if dried too aggressively or unevenly. Using a regulated oven lets you dry the material at a consistent temperature and rate, removing surface moisture without overheating the particles. This protects fragile grains from cracking or breaking and preserves the aggregate’s grading and fines content, while achieving the moisture level needed for proper binder bonding and compaction. With controlled drying, you also avoid hotspots and uneven drying that can occur with simple air drying, leading to more reliable moisture content and better mix quality in the plant. That’s why this approach is recommended for sensitive aggregate.