Lowering the Asphalt Production Temperature – Foam Asphalt Allows Greener Roads

摘要

New technologies enable the manufacturing of asphalt at reduced temperatures. As a result The energy consumption per ton of asphalt and the emissions at the road construction site drop significantly. Whilst conventional asphalt is produced at around 170°C, the low - temperature processes of today allow production temperatures of around 100°C. Various technologies for this are ready for application by road construction industry. Foam bitumen, waxes and other additives, special bitumen or alternative mixing cycles can be suitable for use, depending on the application. Changing the way of asphalt production in an industry takes several years or even decades. In this paper, we will present low temperature asphalt technologies based on the promising technology of foam bitumen and how they are applied in practice.