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Asphalt-Rubber pavements use thousands of scrap tires every
mile reducing the potential for tire fires.
 Because
smoke from tire fires is very harmful, some believe that the
granulated tire rubber mixed with hot asphalt cement must be
harmful as well. That is not the case. The rubber material is
never processed in temperatures high enough to cause the tire
rubber to smoke or burn.
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The rubber particles are not small enough
to become volatile or air borne as particulate matter or PM10. |
Fume emissions studies from asphaltrubber manufacturing and
paving sites have been conducted routinely by state and federal
air quality and health professionals since 1992.
Every time, Asphalt-Rubber has
been found to be the same as conventional, unmodified asphalt
even when rubberized asphalt pavements were recycled.
The use of asphalt-rubber paving
strategies can reduce the emission from trucks that haul the
material to the paving site because the material can be placed
in thinner layers. Consequently less trucks are needed! Less
trucks equals less congestion and less traffic, and ultimately
less emissions.
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It's clear, AR emissions are similar to
other asphalt products:
- Air Pollutant Emissions Test Asphalt Plant Baghouse Stack
San Antonio, Texas Southwestern Laboratories, Houston, Texas
July 1992
- Evaluation of Exhaust Gas Emissions and Worker Exposure from
Asphalt Rubber Binders in Hot Mix Asphalt Mixtures
Kathryn O'C. Gunkel
Wildwood Environmental Engineering Consultants, Inc.
Michigan Department of Transportation 1994
- NIOSH HEALTH HAZARD EVALUATION REPORT: HETA #2001-0536-2864
Crumb-Rubber Modified Asphalt Paving: Occupational Exposures
and Acute Health Effects 2001
- Bay Area Air Quality Management District - California
Stack Emission Testing of Asphalt Rubber and Conventional Asphalt
Concrete
Northern California Rubberized Asphalt Concrete Technology Center
February 5, 2002
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