The addition of the Green System to any Double Barrel mixer allows warm mix production.

A reservoir tank skid for water is required with the Double Barrel Green System.

Side-by-side comparison: left traditional mix, right mix produced with the Double Barrel Green System.

Use of the Double Barrel Green System eliminates the need for fume systems on pavers.

Option To Go “Green”

The latest innovation from Astec saves energy and eliminates smoke and emissions without compromising mix quality. The optional Double Barrel Green System uses water to produce a foamed warm mix asphalt that is odorless, smokeless and longer lasting. Unlike other warm mix methods, the Double Barrel Green System does not require the addition of expensive commercial additives. Instead, the injection of water along with the liquid asphalt cement causes the liquid asphalt to foam and expand in volume. The foaming action helps the liquid asphalt coat the aggregate at a temperature that normally is in the range of 230 - 270°F versus traditional temperatures of 300 - 340°F.

Key benefits of the Double Barrel Green System:

• Improved workability - The foamed liquid asphalt coating has a lower viscosity
• No smoke, no smell - The light oils in liquid asphalt never reach the boiling point, eliminating the smoke (vapor) and corresponding smell
• Ability to run high percentages of recycle mix with standard grade of asphalt
• Longer pavement life - Due to less oxidation of mix and more uniformity of compaction
• 14% less fuel used in the virgin aggregate drying process
• 14% increase in production

In addition to the benefi ts above, using a Double Barrel Green System contributes to a more comfortable, safe environment for workers, eliminates the need for fume systems on facilities and pavers, extends resources by using more recycle and does not increase production cost.

⁽¹⁾ Process Patent Pending