Ammann plant produces mix using more than 60 per cent RAP

Ammann has introduced the ACP 300 ContiHRT asphalt-mixing plant to the North American market.

The continuous plant is capable of producing mix consisting of morethan 60 per cent Reclaimed Asphalt Pavement (RAP) – a rate unrivaled by anycomparable plant on the continent.

"We have been in the North American market for several years, learningwhat the customers need and then creating a product that delivers it: theAmmann ACP 300 ContiHRT asphalt-mixing plant," said Gilvan Pereira, region directorof the Americas for Ammann.

The new continuous plant features Ammann's unique recycling technology, which maximizes RAP utilization and meets stringentemissions guidelines. The gentle pre-heating of the RAP, compared totraditional cold feed to superheated virgin aggregates, prevents thermal stresson the asphalt concrete (AC) content and ensures a highly homogenous final mix.

"The process secures a high-quality mix – even with higher RAP rates,"Pereira said.

The Ammann plant incorporates a RAP dryer for the addition of recycledmaterials and a separate cold recycling feed.

"Separate drying and mixing processes ensure the highest quality andversatility – even with complex designs utilizing RAP and additives," said GunterTesch, commercial support manager plants for Ammann.

The High Recycling Technology (HRT) plant's gentle preheating preventsAC oxidation, enabling both the aggregate and the coating to be reused, whichin turn saves moeny. The preheating process also minimizes fuel consumption anddramatically reduces the levels of carbon dioxide and other pollutants.

The plant is capable of incorporating shingles, liquid additives, fibregranulate and foam AC. It can access arecycling system for RAP utilization up to 60 per cent; a separate coldrecycling system for 30 per cent; or a combination of the two.

The Ammann ACP 300 ContiHRT can also produce high amounts of mix withoutany RAP. Warm mix can be produced with or without RAP. Continuous production capacity is 330 tons perhour.

Most owners are likely to leverage the plant's recycling capabilities.

"It's highly sustainable, and that leads to cost savings," Pereira said. "It's the best of many worlds. The high recycling technology creates a very sustainable mix. You’re essentially turning waste into aggregate. The low temperatures reduce fuel costs – and minimize emissions, too. This provides value on many levels. You’re developing a green product and reducing costs in the process."

As well, the proprietary as1 Control System, the brains of the ACP 300ContiHRT, is operating in hundreds of plants around the world.

A unified service platform and stairway concept allows effortlessergonomic access to the major asphalt components – especially Ammann core partssuch as burners, drums, filters and the twin-shaft mixer.

Installation and relocation is quick and uncomplicated. The horizontaldesign ensures quick assembly and disassembly. Optional quick cabling and steelskids further speed up the relocation process.

A wide range of optional equipment is available from Ammann. It includesburners for light oil, natural gas and LPG; storage silos of 330 tons in twocompartments or 660 tons in four compartments, which are available as long-termstorage solutions; and AC tanks with superior insulation, a filling pump andtank-to-tank pumping andcirculation. Cold feed system options include additional feeders,vibrators and gravimetric dosing.

Ammann's North American hub is in Davie, Florida. The company sellslight and heavy compaction equipment in North America as well as mobile,continuous and batch asphalt-mixing plants.