Blends of polyblend and bitumen, when used, help to increase road life by a factor of three. What is the reason?
Polyblend is a fine powder of recycled modified plastic. The binding property due to increased cohesion and enhanced water-repelling property of plastic makes the road last longer besides giving added strength to withstand more loads. This is because: Plastic increases the melting point of the bitumen which would prevent it from melting in India’s hot and extremely humid climate, where temperature frequently crosses 45°C. Rainwater will not seep through because of the plastic in the tar
