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Asphalt concrete, normally known simply as asphalt or
AC.
is a composite material commonly used for construction of highways and
parking lots.. It consists of asphalt binder and mineral aggregate mixed
together then laid down in layers and compacted
The terms asphalt concrete, bituminous asphalt concrete, etc., are
typically used only in engineering jargon. Asphalt pavements are often
called just asphalt by laypersons who tend to associate the term
concrete with Portland cement concrete only. The engineering definition
of concrete is any composite material composed of mineral aggregate
glued together with a binder, whether that binder is Portland cement,
asphalt or even epoxy. Informally, asphalt concrete is also referred to
as blacktop.
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Oden & Doucette Seal Coating
101 S Coombs St # E, Napa, CA 707 255-2207Rinker Materials Corp
7059 Tremont Rd, Dixon, CA 707 678-4311
Rinker Materials Corp
1601 Cement Hill Rd, Fairfield, CA 707 422-2520
Slinsen Construction Co
973 Enterprise Way, Napa, CA 707 224-6527
Syar Industries Inc
2301 Napa Vallejo Hwy, Napa, CA 707 252-8711
Syar Industries
4969 Vanden Rd, Vacaville, CA 707 439-9880
Syar Industries Inc
260 Todd Rd, Santa Rosa, CA 707 584-0262
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Asphalt concrete is often touted as being 100% recyclable. Several
in-place recycling techniques have been developed to rejuvenate
oxidized binders and remove cracking, although the recycled material
is generally not very water-tight or smooth and should be overlaid
with a new layer of asphalt concrete. Asphalt concrete that is
removed from a pavement is usually stockpiled for later use as a
base course material. This reclaimed material, commonly known by the
acronym 'RAP' for recycled or reclaimed asphalt pavement, is crushed
to a consistent gradation and added to the HMA mixing process. Very
little asphalt concrete is actually disposed of in landfills.
Sometimes waste materials, such as rubber from old tires, are added
to asphalt concrete as is the case with rubberized asphalt, but
there is a concern that the hybrid material may not be recyclable.
Asphalt deterioration can include alligator cracks, potholes,
upheaval, raveling, rutting, shoving, stripping, and grade
depressions.
Asphalt concrete pavements—especially those at airfields—are
sometimes called tarmac for historical reasons, although they do not
contain tar and are not constructed using the macadam process. |
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Also See:
Asphalt Paving
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