RUBBER MODIFIER

AN ADVANCED PRODUCT DEVELOPMENT FOR EASY USE
GENAN ROAD+ PREMIXED is an elastomeric bitumen and asphalt modifier, manufactured in compliance with a process patented by Evonik. Ingredients are high-quality rubber powder produced by Genan mixed with 4.5% Vestenamer®, a semicrystalline polyoctenamer produced by Evonik.

GENAN ROAD+ PREMIXED is a refined product development of Genan’s original two-component modifier called ROAD+.
ROAD+ was two-component in the sense that it consisted of Genan rubber powder and Vestenamer® – delivered in separate packaging for the asphalt/bitumen supplier to mix at the mixing plant/blending facility (wet processing) or directly on site (dry processing).

GENAN ROAD+ PREMIXED is a one-component modifier. High-quality rubber powder from recycled tyres has already been mixed with Vestenamer® pellets and processed into a uniform, easy-to-handle modifier, simplifying the mixing process for the asphalt/bitumen supplier.

GENAN ROAD+ PREMIXED is thus far easier and less time-consuming to work with than the original, two-component ROAD+ product.

ENHANCED PERFORMANCE AND DURABILITY
Laboratory tests and field experience both show that as a rule of thumb, a standard bitumen modified with 10% ROAD+ performs on the same level as or even better than a similar 4% SBS-modified bitumen. When comparing properties, e.g. the ability to prevent rutting and forced ductility, ROAD+ performs significantly better.

As GENAN ROAD+ PREMIXED is a manufacturer-premixed version of ROAD+, properties are the exact same; and test results and field experience for ROAD+ modified asphalt/bitumen thus apply to GENAN ROAD+ PREMIXED as well. GENAN ROAD+ PREMIXED is just far easier to work with.

CONSISTENT QUALITY IS KEY FOR PRODUCT PERFORMANCE
It is of great importance for product performance that the rubber powder used is clean and uniform in size. Being the world’s largest manufacturer of rubber powder from end-of-life tyres, Genan has the technology to live up to these requirements. Genan ambient rubber powder is not only consistent in size – but also virtually dust-free.

Follow the links below to download further information on GENAN ROAD+ PREMIXED.

Throughout the world, both local and national authorities are now realising that it is good business to use modified asphalt for new road projects. It is cost-efficient both medium- and long-term, as rubber-modified roads are less exposed to both rutting and cracking. This reduces the need for maintenance, which is not only a financial burden, but also a traffic-related problem, as roads must be partly closed during maintenance work.

Asphalt and bitumen modification is thus becoming more and more popular. In several European countries, more than 20% of all bitumen for road construction is now modified. Follow the link below to download statistics published by the European Asphalt Pavement Association.

Traditionally, the most common way to modify bitumen in modern road construction has been to use virgin SBS (styrene-butadiene-styrene). It was thus a major breakthrough, when Genan launched ROAD+ as a third generation asphalt and bitumen modifier – based on recycled rubber powder from end-of-life tyres. In respect of both performance and properties, ROAD+ proved equivalent or superior to SBS modifiers. Yet, the environmental gain offered by the use of ROAD+ was probably even more significant. If a product based on ELT rubber powder could gain ground in the market for asphalt and bitumen, the environmental gains would be substantial. Compared to co-incineration, greenhouse gas emissions would be significantly reduced, and the use of fossil fuels would be limited. For further information about environmental aspects, we make reference to Genan’s Life Cycle Assessment (LCA) Study.