Question

Blends of polyblend and bitumen, when used, help to increase road life by a factor of three. What is the reason?

Answer 1

Introduction to polyblend:

Polyblend, a fine powder made from recycled plastic, is mixed with bitumen for the usage in road construction.


Role of polyblend:

Polyblend increases the longevity of roads:

• Mixing of plastic increases the melting point of bitumen, which increases durability of roads.
• It increases the water repellent quality of bitumen along with increasing its strength. This prevents percolation of rainwater and ensures retention of proper structure of roads.