Environmental Benefits: Green Paving

 

Properly done asphalt rubber road surfacing is one of those situations where a process is both the most cost effective choice over time as well as the most ecologically friendly. There are several reasons why hot asphalt rubber pavement is environmentally superior to any other type of asphalt.

 

Approximately 270 million scrap tires are generated in the United States every year. Some are sent to landfills, some are stockpiled, and some are recycled. In landfills, tires take up valuable space and, due to their tendency to trap methane gases, become buoyant, usually bubbling to the surface and damaging landfill liners designed to prevent contaminants from polluting surface and ground water. Many states have banned tires from landfills. In stockpiles, tire fires are not uncommon. These fires often burn for months and cause significant air and ground pollution. Illegal dumping of tires pollutes ravines, woods, deserts, lakes, and rivers. Tire rubber can be recycled in a variety of ways and for a variety of uses. The most effective is to ground it into crumb about the density of coffee and mix it with hot asphalt to apply to a road surface. Cox Paving of Texas has recycled over 8 million tires in the last ten years doing just that.

 

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A hot asphalt rubber mix consists of 17-22% rubber. That’s 17-22% less asphalt oil, a dwindling resource with an extremely volatile price range. Tire rubber holds a consistent price and needs to be recycled.

 

Hot asphalt rubber pavements last longer than other asphalt pavements. The general consensus among engineers familiar with the product is that it lasts about twice as long as traditional asphalt. In addition, an asphalt rubber PFC can also be laid half as thick as a traditional asphalt PFC. This means fewer materials needed on the initial PFC and much less maintenance required over time. Cost effective, eco-friendly.

 

Asphalt rubber pavements are quieter, far quieter, than other pavements. Asphalt rubber surfaces result in less noise pollution as well as fewer noise barrier walls required. Fewer noise barrier walls mean less time and money spent and a smaller carbon footprint.

 

 

 

 

 

 

 

 

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