Pavement Stability Conventional Anti-stripping Agents

Although the use of Anti-stripping Agents can not eliminate the pavement damage problems caused by poor pavement design, bad construction techniques or poor materials, but mostly helps to minimize their effect.

The twin aspects of pavement stability are :

• Bituminous wetting: whether Bitumen properly coats the aggregate surface or not?
• Resistance to stripping: whether Bitumen sticks to the aggregate for lifetime of the road or not?

Poor wetting can be avoided by the modification of the bitumen properties or by the modification of the aggregate surface. The aggregates can be pre-coated with kerosene or water solution of Anti-stripping Agent to make the surface more receptive to the bitumen. But more practical approach is to modify the binder properties by the adding Anti-stripping Agent additives also known as "adhesion promoters", "wetting agents" or "Anti-stripping Compounds"