It can be very costly removing and replacing
large areas of failed asphalt, such as a shopping center. The
Petro-Mat® system is an alternative surface that provides
a cost-effective and time-saving solution. The Petro-Mat® Overlay
is a fabric application with a 1 ½" of asphalt over the
existing surface. This high strength fabric acts like rebar in
concrete; it provides shear and lateral strength over existing
cracks and voids in the pavement, also creating an impermeable
layer between the old and new surfaces that moisture cannot penetrate.
This operation starts with sweeping and cleaning the existing surface. Cracks ¼" or
wider are filled with cracksealer and holes or voids are filled with hotmix.
Liquid asphalt cement at 290F is then applied at a specific rate. The Petro-Mat® is
then put down by a mechanical applicator and the new mat is rolled to smooth
out air pockets and wrinkles. Standard paving operations follow the fabric
overlay using a minimum of 1 ½" of new asphalt. The new hotmix provides
more heat and pressure to bond the systems together. The asphalt overlay
is finally compacted with a steel wheel roller. The true benefit of using
the Petro-Mat® system is that the new surface uses the existing sub-base
and asphalt surface as its base. Proper installation of the Petro-Mat® system
and asphalt overlay is critical to ensure successful long-term performance.
One day after the overlay, American Asphalt returns and re-stripes these
regions exactly the way they existed. Directional arrows, no parking or fire
zones, and crosswalks can be added to improve traffic flow and pedestrian
safety.
(See notable projects-K-Mart Shopping
Center) |
