Bitumen is the component that binds and gives cohesion to bituminous mixtures and is mainly responsible for their properties. Its consistency can be modified by applying more or less temperature, which allows their easy handling, enveloping of the aggregates, compacting of the mixtures and their adequate performance at service temperatures. Asphalt bitumens mainly have two fields of application: the road and the industrial environment.
Repsol uses proprietary technology to develop so-called "green asphalts" in which the base bitumen is mixed with crumb rubber under certain conditions. Asphalt mixtures for road surfaces manufactured using these rubber bitumens have significant technical advantages such as: lower acoustic impact on reducing the noise levels produced by wheeled traffic and greater adherence.
They also contribute to solving the major environmental problem posed by the accumulation of this waste due to the reuse of more than 10,000 tons of end-of-life tires annually. In short, the use of these bitumens achieves more efficient and eco-friendly asphalt mixtures.
These bituminous emulsions have high-stability conditions that give them a very long service life.