Sustainable road construction with B2Last®
You are looking for both a sustainable and high performing bitumen additive? BASF developed an intelligent and innovative bitumen modification that helps you to significantly reduce CO2 and bitumen emissions and makes roads more durable.
Be it an increasing heavy load traffic or more extreme weather conditions because of climate change - today, roads and streets must fulfill different requirements. Additives for bitumen play a decisive role in the durability of asphalt. At the same time, occupational health and safety, environmental protection and the reduction of CO2 emissions are of high importance for road construction.
With B2Last®, BASF has developed an innovative bitumen additive that combines both asphalt performance and sustainability: temperature-reduced paving with a high recycled asphalt content and good workability, significantly lower bitumen and CO2 emissions and longer lasting roads. B2Last® is the bitumen additive for sustainable road construction.
Your benefits at a glance
Reduced CO2-emissions along production process – 30-40 °C lower asphalt mix production and laydown temperatures (warm mix asphalt)
Occupational health and safety - B2Last® makes work safer, bitumen emissions below 1,5 mg/m³ achievable
Saving primary resources – enables high contents of reclaimed asphalt at an excellent workability of the asphalt mix, also at reduced laydown temperatures
Environment Health and Safety
Bitumen aerosols and vapors (bitumen emissions)
B2Last® enables asphalt mix production and laydown temperatures below 140 °C (warm mix asphalt) and thereby reduces bitumen aerosols and vapors by up to 65% (depending on measuring point) – for workers walking beside the paver the occupational exposure limit of 1.5 mg/m³ can be fulfilled.
We value the health and safety of people above all else – introduction to product handling and emission monitoring with customers at every plant trial. Several large scale paving trials and more than 12 km paved roads confirm: B2Last®-related emission levels are far below occupational exposure limits.
Our solution for sustainable road construction
Reduced asphalt mix production and laydown temperatures at still high reclaimed asphalt ratios while maintaining asphalt performance and its excellent workability
Less energy needed for heating bitumen, aggregates and reclaimed asphalt
Occupational health & safety – less bitumen emissions, B2Last® makes work safer
Enables high reclaimed asphalt ratios – saving primary resources
Increased road life time – excellent rutting behavior and fatigue resistance across broad temperature range
B2Last® crosslinks bitumen components to form a polymeric network. It makes asphalt stiffer and thereby boosts the rutting and fatigue behavior at high service temperatures. In addition, the formed polymeric network provides enough elasticity to deliver excellent crack resistance at low service temperatures.
As a leading chemical company, BASF has the expertise and experience to improve the quality and processing of bitumen and asphalt in a unique, innovative and customer-oriented way.
The new additive has already been tested under real life conditions: over 12 kilometers of public road have been paved in Bavaria and North Rhine-Westphalia in Germany and Kentucky in the United States. The modified asphalt has displayed excellent characteristics during both mixing and application.
Installations and our support
Asphalt mixing plants may already be capable of applying B2Last® after only slight plant adjustments. We support our customers with plant analyses (B2Last® compatibility), concepts for retrofit and plant trials. Get in touch with us!
Application example – dosing & mixing inside bitumen balance