AR2000 in action

In the AR2000's unique heating system, which is used in all four main units, air is heated to about 1100oF in a diesel-fueled combustion chamber and blown directly onto the pavement through small holes in the large manifold. It is this high-velocity application of hot air, in combination with the low-level infrared heat generated by the manifold, that enables the AR2000 to gently and uniformly heat the pavement’s surface layer to optimum temperatures for recycling. The spent hot air, which cools to about 650oF, is then vacuumed back into the combustion chamber for reheating and reuse, thereby minimizing heat loss. Age-hardening of the recycled asphalt binder is minimal and with its virtually emission-free operation, Martec’s AR2000 is setting new air-emission standards for the hot in-place recycling of asphalt pavements.

Following treatment by the two Preheaters which work in tandem, the milling heads of the Heater-Miller loosen and remove the softened pavement down to desired depths. In the Heater-Mixer, a series of devices is used to continuously mix and expose the loosened asphalt mixture to the combination of hot air and infrared heat, thereby ensuring that the recycled materials are thoroughly and uniformly heated. This also provides a final opportunity to remove excess moisture which in earlier HIR systems, was a limiting factor that commonly prevented recycled hot-mix asphalt from reaching temperatures above 212oF. By properly heating the newly exposed surface of the pavement’s underlying layer, as well as the pavement edges, superior bonding of the recycled pavement is achieved with the creation of hot-welded joints during compaction.

AR2000 Super Recycler Equipment Train

Preheater No. 1

Preheater No. 1

Heater-Miller

Heater - Mixer

Additional Conventional Equipment

Paver

Rubber-Tired Roller

Vibratory Roller

• Savings in Cost and Time
  Martec's system for the hot in-place recycling of asphalt pavements offers potential savings of up to 30% in cost and 50% in time, compared to conventional resurfacing methods.
• Environment-Friendly
  The AR2000 Super Recycler has been designed and manufactured to operate virtually emission free.
• Operating Speed
  When recycling to depths of 50 millimeters, the work speed varies from 5 to 7 meters per minute, depending on road and weather conditions. Three kilometers of a single-lane roadway can typically be recycled in a working day.
• Unique Heating System
  The Hot-Air / Infrared Heating System, with its combination of high-velocity hot air and low-level infrared heat, is capable of easily heating the surface layer of the asphalt pavement. This unique heating system also makes it possible to recycle polymer-modified asphalt.
• Moisture Removal
  Moisture, which is normally present in deteriorated asphalt pavements, can reduce the production rate and quality of recycled asphalt. Martec’s Hot-Air / Infrared Heating System, in combination with the Heat and Stir Process, is effective in removing excess moisture.
• Addition of New Materials
  New hot-mix asphalt or aggregate materials can be added to the recycled asphalt in sufficient volumes to provide a one-pass combined pavement thickness of up to 75 millimeters.
• Diesel-Fuel Capability
  For its heating process, the AR2000 Super Recycler uses diesel fuel which is readily available worldwide. This eliminates any need for liquefied gas, such as propane. Hot in-place asphalt recycling can now be safely performed anywhere in the world.
• Fuel Efficiency
  The recirculating feature of Martec's Hot-Air / Infrared Heating System minimizes heat loss by vacuuming back, reheating and reusing the hot air used in the heating process.
• Superior Bonding
  By properly heating pavement edges and the newly exposed surface of the pavement's underlying layer, hot-welded joints between old and new paving materials are created during compaction.
• Easy Mobilization
  The four main units of the AR2000 Super Recycler can be easily connected to tractor trucks and towed at normal highway speeds between job sites.