Bitumen has been used as a construction product for thousands of years. It is 100% re-useable and recycling of asphalt paving has increased significantly in recent years. In 2013, almost 50 million tonnes of asphalt were recycled in Europe. Quantities recycled directly back into road surfaces vary from country to country, but can be as high as 85%.

Due to its longevity, bitumen can be recycled, as is common practice with asphalt roads and paving. The use of "old" road material (Reclaimed Asphalt Pavement (RAP)) as a component in making fresh asphalt is relatively common practice. The asphalt mixture specifications indicate the amount allowed and the methods to calculate the contribution of the old (hardened) bitumen to the new mixture.

Asphalt roads can be recycled by two main processes:

  • In-site – where the broken-up "old" road material is re-formed into (a part of) the new structure.
  • Off-site – where the RAP is taken to a plant to be used as a component of a new mixture.

The process contributes to sustainability because it reduces waste disposal and conserves new resources (aggregate and bitumen).

The importance of environmental protection and the possible impacts associated with products manufactured and consumed, has increased interest in the development of methods to better comprehend and compare the sustainability of products, on the basis of robust scientific data.

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Due to the manufacturing process, which removes the lower boiling molecules, emissions to the atmosphere do not occur under normal conditions of service. Bitumen emissions at ambient temperature are negligible.

Water & Soil

Bitumen is a very inert material that is insoluble in water. Moreover, bituminous materials are often used to line drinking water reservoirs and in products to line water pipes that supply potable drinking water. Retention ponds are often paved with asphalt to keep liquid industrial waste material from leaching into the soil. Similarly, bitumen is used to line and cap hazardous waste sites – preventing rainwater from permeating through the hazardous waste and from leaching into groundwater.


Soil quality and vegetation are not influenced by bitumen, this is why 90% of rural paths are built on asphalt foundations. Such paths allows people to spend their free time in and around the local green space while ensuring that the environmental impact of human contact is at a minimum. In agricultural settings bitumen has been used as a ‘mulch’ to help retain water in the soil and therefore help crops to grow as well as being used to bond organic pots for seedling germination.

Eurobitume Life Cycle Inventory

The bitumen LCI is a cradle to gate study covering the extraction of crude oil; transport to Europe, including pipeline and ship transport; manufacturing bitumen in a complex refinery; and hot storage of the product. It also takes into account the construction of production facilities (infrastructure).

The Life Cycle Inventory documents the work of the task force and provides an output summary in aggregated format. For LCI specialists Eurobitume also publishes the detailed output, based on ecoinvent standard flows.