Saltar al contenido

Asphalts news

Repsol's bitumens improved with rubber actively contribute to improving the environment and the increase in the quality and safety of our roads

News came out in October about the major environmental problem in Seseña (Toledo) caused by the accumulation of thousands of tons of scrap tires in a landfill. The following photos are significant:
In Spain, over 10 million tires are discarded every year, approximately 300,000 metric tons.
Legislation in Spain as of Royal Decree 1619/2005 on the management of scrap tires and under the protection of Act 10/1998 on waste, a National Scrap Tire Plan is being defined with the aim of reusing, recycling and recovering this waste material as much as possible, in order to avoid its eventual deposit at a landfill, this being the least satisfactory option.
The National Scrap Tire Plan indicates public works as an instrument for recycling rubber dust from STs, as a constituent material of some binders used in the manufacture of bituminous mixtures, provided that it is technically and economically possible. Therefore, Repsol Asphalts developed a wide range of bitumens with STs included in C.O. 21/2007 (detailed and extended with C.O. 21 bis/2009) that help to meet that need.
Said bitumens (known as green asphalts) are developed using Repsol's own technology and which basically consists of mixing the base bitumen and crumb rubber under conditions such as to enable the complete dispersal of the crumb rubber in the bitumen. This dispersion must also be stable.
Asphalt mixtures for road surfaces manufactured using our rubber bitumens make it possible to obtain technical advantages such as: less acoustic impact on reducing noise levels when vehicles drive over the surface and greater adherence. They also contribute to solving the major environmental problem of the accumulation of scrap tires in landfills: reuse of over 10,000 tons of tires annually, which contributes to minimizing this environmental liability.
In short, these bitumens make it possible to obtain more efficient and environmentally friendly asphalt mixtures, thereby meeting society's needs.