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Applications in earthworks, road construction and material processing can be solved profitably by our technologies. We explain how it works.
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Enough theory. Let’s see what goes on in the real world: our customers’ Wirtgen Group machines and plants in action.
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Find the right WIRTGEN GROUP spare parts for your machines and systems quickly and easily with our WIRTGEN GROUP Parts website.
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The WIRTGEN GROUP is an internationally operating group of companies in the construction equipment industry. Find out more about our production and where you can find us.
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Sustainability is an integral part of our corporate principles. We know that the future belongs to climate-friendly products. We’re already manufacturing them today.
Sustainability

Asphalt Recycling

The Asphalt Cycle

In industrially developed countries, significantly more roads are rehabilitated or extended than completely new roads are built. But what happens to the old road surface?

Recycling asphalt is an economic imperative in order to conserve natural resources. Using the maximum amount of recycled asphalt not only protects the environment, it also positively affects RAP prices.

BENNINGHOVEN asphalt mixing plants

BENNINGHOVEN offers a wide range of “hot and cold” recycling feeder systems designed to produce the highest quality RAP. The recycling systems can also be individually customized and integrated to retrofit existing asphalt mixing plants. The maximum theoretical amount of RAP that can be added to the mix depends largely on its grading curve – or, to put it another way, on the quantity, size, and composition of its constituents. As a result, one goal must be to align the PSD curve of the crushed RAP as closely as possible to the desired grading curve of the final asphalt product.

“BENNINGHOVEN offers recycling technologies – whether hot or cold feeder systems – for every customer need.”

Recycling Technologies

WIRTGEN Cold Milling Machines

First, however, the asphalt must be recovered by removing individual layers of the road structure. Cold milling machines are perfect for this because they are capable of selectively milling these layers. As a result, it’s possible to remove the surface layer, binder course, and base layer separately and recycle them separately.