Ammann plant produces mix using more than 60 per cent RAP

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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 more than 60 per cent Reclaimed Asphalt Pavement (RAP) – a rate unrivaled by any comparable plant on the continent.

“We have been in the North American market for several years, learning what the customers need and then creating a product that delivers it: the Ammann ACP 300 ContiHRT asphalt-mixing plant,” said Gilvan Pereira, region director of the Americas for Ammann.

The new continuous plant features Ammann’s unique recycling technology,  which maximizes RAP utilization and meets stringent emissions guidelines. The gentle pre-heating of the RAP, compared to traditional cold feed to superheated virgin aggregates, prevents thermal stress on 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 recycled materials and a separate cold recycling feed.

“Separate drying and mixing processes ensure the highest quality and versatility – even with complex designs utilizing RAP and additives,” said Gunter Tesch, commercial support manager plants for Ammann.

Ammann HRT

The High Recycling Technology (HRT) plant’s gentle preheating prevents AC oxidation, enabling both the aggregate and the coating to be reused, which in turn saves moeny. The preheating process also minimizes fuel consumption and dramatically reduces the levels of carbon dioxide and other pollutants.

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

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

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.”

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

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

Installation and relocation is quick and uncomplicated. The horizontal design ensures quick assembly and disassembly. Optional quick cabling and steel skids further speed up the relocation process.

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

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

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