is the durable surface material laid down on an area intended to sustain
(vehicular or foot traffic). Such surfaces are frequently marked
to guide traffic. The most common modern paving methods are asphalt and
Asphalt Paving has been widely used since 1920, though in ancient times
asphalt was already used for road-building. Most asphalt pavements are built on a gravel
base which is generally at least as thick as the asphalt layer, although
some 'full depth' pavements are built directly on the native subgrade. In
areas with very soft or expansive subgrades such as clay or peat, thick
gravel bases or stabilization of the subgrade with Portland cement or lime
can be required. In some countries with soft soils, a foundation of
polystyrene blocks is used instead. The actual material used in paving
asphalt paving by contractors is
termed HMA (Hot Mix Asphalt), and it is usually applied using a free
Asphalt paving is also used in driveway construction
such as paving driveways, commercial paving, parking lot paving.
Advantages of asphalt roadways include relatively low noise, relatively
low cost compared with other paving methods, and ease of repair.
Disadvantages include less durability than other paving methods, less
tensile strength than concrete, the tendency to become slick and soft in
hot weather and a certain amount of hydrocarbon pollution to soil and
groundwater or waterways.
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|Aaron Paving Inc
Napa, CA 707-224-3377
Napa, CA 707-255-6172
Ghilotti Brothers Inc
525 Jacoby St, San Rafael, CA 415 454-7011
Harold Smith & Son Inc
800 Crane Ave, St Helena, CA 707-963-7977
Jim Todorovitch Paving
Napa, CA 707-224-0391
Keith J Gale General Engr
1637 Lincoln Ave, Napa, CA 707-224-6603
147 Camino Oruga, Napa, CA 707-253-8774
Oden & Doucette Seal Coating
101 S Coombs St # E, Napa, CA 707-255-2207
R & M Grading Inc
2200 Big Ranch Rd, Napa, CA 707-255-5009
Napa, CA 707-224-3377
135 Camino Dorado # 16, Napa, CA 707-251-0142
Concrete pavements are created using a concrete mix of
Portland cement, gravel, and sand. The material is applied in a
freshly-mixed slurry, and worked mechanically to compact the interior and
force some of the thinner cement slurry to the surface to produce a
smoother, denser surface free from honeycombing.
Continuously reinforced designs generally cost more than jointed
reinforced or jointed plain designs initially due to increased quantities
of steel. However, they can demonstrate superior long-term performance and
Advantages of cement concrete roadways include that they are typically
stronger and last longer than asphalt concrete pavements. They also can
easily be grooved to provide a durable skid-resistant surface.
Disadvantages are that they have a higher initial cost, are more difficult
to repair, and are also somewhat noisy if jointed, but unjointed concrete
pavement is actually a method of roadway noise mitigation.
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Asphalt Paving, Sealcoating and