Description

Modified binders have the ability to offer improved performance over conventional binders. Benefits that may be derived from binder modification and typical conditions where such binders should be considered, and can be used with great gains include:

•  Areas where improved stiffness and cohesion, is needed
•  Areas where improved flexibility, resilience and toughness, is needed
•  In areas of high stress such as heavy traffic, steep inclines, intersections, round abouts and sharp curves
•  In asphalt bases which are subjected to high loading under slow moving traffic
•  In areas experiencing large daily/seasonal temperature fluctuations or high ambient temperatures for long periods
•  In areas that are subjected to fuel spillages

The polymer dosages and mix designs of the binder are selected, to ensure optimum performance to the climatic and traffic conditions that, prevail on a particular project. Extensive research has shown that, the use of performance asphalts using polymer modified bitumen binders significantly increases stability, strength, anti-rutting properties and longer life-span, as demanded by the industry to meet todays and tomorrows traffic conditions.