the innovative completely carbon-neutral plant mix

The conventional polluting asphalt could soon be replaced by an asphalt based on recycled materials and a binder of vegetable origin.

Whatever we do, when we walk, cycle or drive, we all use roads made of bitumen, which is made from petroleum.

You may have noticed the unpleasant smell of oil when laying conventional asphalt.

Thanks to Eiffage course, one of France’s leading roadworks specialists, that could soon change. For two years, the company has been testing Biophalt, a petroleum-free bitumen that could gradually replace traditional bitumen. This test will be conducted for two years on a section of road north of Toulouse.


Between the roads of Montaigut-sur-Save and Grenade, we see a dark gray asphalt, different from what we find on the other roads.

This cleaner asphalt is in fact an experimental coating invented by Route Eiffage, and is made with a binder of vegetable origin.

Last August, when this section of road was to be renovated, the Haute-Garonne department and Eiffage Route decided to test this new bitumen, which is totally ecological, as it is totally carbon neutral.

Biophalt® asphalt considerably reduces the environmental impact of your works. Firstly thanks to the vegetable nature of its binder, which is an alternative to petroleum-based bitumen. This binder turns a waste that was previously used primarily as fuel into a carbon sink, emitting CO2 in the process. Thanks to its high proportion of recycled asphalt aggregates, Biophalt® also reduces the use of new aggregates from quarries (non-renewable natural resources). The carbon footprint of Biophalt® is neutral, thanks to the use of co-products from the forest sector (carbon sink) and its hot manufacturing. Biophalt® is completely recyclable.

Eiffage course

How is Biophalt® made?

The new asphalt, which now covers a little less than 2 km of road, is made from a binder of plant origin and recycled materials.

The manufacture of Biophalt does not require the construction of additional infrastructure, since the operation can be carried out in a traditional factory.

Biophalt is a product of biological origin, derived from forestry, and according to the manufacturer, saves approximately 47 tons of CO2 compared to traditional asphalt.

However, it has the small disadvantage of being a little more expensive: 16 euros per m² against 14 euros for petroleum bitumen. By democratizing biofuel, production costs will inevitably be reduced, and this is the objective of Route Eiffage, which is committed to the environment and tries to offer a viable alternative to polluting bitumen.

Performance comparable to traditional asphalt.

The Eiffage Route identifies the many advantages of Biophalt, starting with its high recycling rate, over 30%; It also uses a vegetable binder with strong regenerative properties to replace the bitumen used.

It retains the same properties as conventional asphalt and, in addition, saves energy in its manufacture, since it requires lower temperatures.

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