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Rubberized
asphalt lasts longer for less
Rubberized asphalt is a high-performance alternative
to traditional paving material that combines the strength and
versatility of asphalt and the longevity and flexibility of recycled
rubber. Derived from scrap tires, rubberized asphalt is longer
lasting, safer, less costly, and friendlier to the environment
than traditional paving materials. Rubberized asphalt provides
an outlet for between 500 and 2,000 scrap tires per lane mile
of pavement. For a 1 mile section of 4 lane highway, between
2,000 and 8,000 tires create a longer-lasting, safer and more
cost-effective roadway.
“Rubberized asphalt resists cracking and
rutting, improves skid resistance, decreases splash and spray
in wet conditions and decreases maintenance costs,” said Jeffrey
Kendall, CEO of Liberty Tire Recycling, a tire recycling service
provider.
Cracking in traditional asphalt is a result
of vertical or horizontal movements beneath the overlay that
are caused by traffic loads, temperature fluctuations and shifting
earth. Rubberized asphalt reduces the occurrence of cracking
and rutting with superior elasticity and stiffness. In use for
more than 40 years, rubberized asphalt is laid using the same
equipment as traditional asphalt in most cases. The longer lasting
properties of recycled rubber reduce maintenance costs and provides
a consistent supply of material.
Other environmental factors include the reduction
of noise pollution by up to five decibels on highways, and the
reduction of high temperature zones caused by urban heat islands.
A heat island is an area that is significantly warmer than surrounding
rural areas because developed land retains more heat. Rubberized
asphalt’s porous top layer cools down quicker than conventional
asphalt, cooling road surfaces and diminishing the effects of
urban heat islands.
The EPA lists the benefits as “...longer
lasting road surfaces, reduced road maintenance, cost effectiveness
over the long term, lower road noise and shorter braking distances.”
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