Published: The Process of Asphalt Paving

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The Use of Recycled Materials in Road Construction

For more than a century, Mercer Fraser Co. has completed vital infrastructure projects, such as roads and highways, in California. Mercer Fraser Co. also produces construction materials, including recycled materials.

Recycled materials include recycled concrete aggregates, plastic waste, mine waste, recycled asphalt shingles, crushed glass, steel slags, old tires, and coal combustion output. These materials are at different stages in their use for road construction, with research still ongoing. They also have different purposes due to their inherent properties.

One advantage of their use is environmental improvement due to lesser quantities of waste materials going to landfills. They also are cheaper than using asphalt alone, in many situations.

Some of these recycled materials provide more durability than conventional roads. Some materials also withstand wear and tear much better than traditional road projects due to their water-resistant qualities. Water-resistance prevents cracks and potholes from developing, which makes maintenance costs lower than the costs of conventional roads.