Erik Schlangen: A "self-healing" asphalt

The video discusses the advantages and disadvantages of asphalt roads, focusing on noise and splash water issues. It introduces porous asphalt as a solution but highlights the problem of raveling. The concept of self-healing asphalt using steel wool and induction heating is presented as a solution to extend road life. Testing and real-world applications are discussed, with a demonstration showing the effectiveness of the technology.

What is one of the main benefits of using porous asphalt on roads?

• It is cheaper to produce.

• It is more durable than regular asphalt.

• It reduces noise and splash water.

• It requires less maintenance.

What is a significant disadvantage of porous asphalt?

• It is more expensive to install.

• Raveling can occur, leading to road damage.

• It can cause more traffic congestion.

• It is not environmentally friendly.

What is the purpose of adding steel wool to the asphalt?

• To increase the road's flexibility.

• To enhance the road's color.

• To facilitate self-healing of the asphalt.

• To make the road more resistant to heat.

How does the induction machine contribute to the self-healing process?

• It removes excess water from the asphalt.

• It applies pressure to the road surface.

• It heats the steel wool to melt the bitumen.

• It cools down the asphalt quickly.

What was the outcome of the highway test track using self-healing asphalt?

• The road lasted several years without damage.

• The road required frequent repairs.

• The road showed no improvement.

• The road was more expensive to maintain.

How often should the self-healing machine be used on roads to double their surface life?

• Every ten years

• Every four years

• Every two years

• Every year

What is the main advantage of using self-healing materials in road construction?

• It makes roads more colorful.

• It significantly extends the road's lifespan.

• It eliminates the need for road signs.

• It reduces the initial construction cost.