What is the typical temperature range for intermediate rollers during compaction?

• A. 100°F - 150°F
• B. 175°F - 300°F
• C. 50°F - 100°F
• D. 300°F - 400°F

Answer: (B)

During asphalt compaction, keeping the intermediate rollers at a heat range that can transfer enough warmth to the mat without overheating is essential. The typical heat range for these rollers is about 175°F to 300°F. This level maintains the asphalt’s workability long enough for effective densification, helping achieve a dense, smooth surface as the mat cools. If the rollers are too cool, the mix stiffens too quickly and compaction quality suffers; if they’re too hot, you risk scorching the binder, uneven surface, or sticking to the roller. Therefore, 175°F–300°F provides the right balance for successful intermediate-roller compaction.