Which of the following statements is not true about polyblend?

Roads are not constructed using polyblend alone. Polyblend, made from plastic film waste, is mixed with the bitumen that is used to lay roads. The blends of Polyblend and bitumen, when used to lay roads, enhance the bitumen’s water repellent properties, and help to increase road life by a factor of three. Polyblend enhances bitumen’s bonding ability, and makes the roads longer lasting by rendering them more impervious to water.