VIDEO: How do we use recycled tires to improve road durability?
Aramco brings circular carbon economy concepts to building better roads in the areas it operates.
Globally, recycling tires presents a challenge due to their bulkiness and the chemicals they release when burned.
In Saudi Arabia alone, approximately 20 million waste tires are generated each year.
To address this challenge, we apply the principles of the circular carbon economy (reduce, reuse, recycle, recover) to recycle scrap tires into asphalt rubber.
First, the scrap tires are broken down into small fragments known as crumbs.
Second, the crubmed tires are added directly to the hot asphalt mix. This reduces the amount of bitumen needed to bind paving material and lowers the amount of emissions released by bitumen when exposed to the sun by replacing up to 20% of bitumen with recycled materials.
Roads paved with asphalt ruber demonstrate several benefits over conventional asphalt, including:
Fewer surface cracks and deformations, resulting in increased road service life
Less noise from vehicles using the road
Lower scrap tire disposal in landfills.
By recycling scrap tires into asphalt, we aim to create value from waste and contribute to a more sustainable future.