| Gray
Surface:
|
|
the overall graying of
asphalt because of the oxidation of the pavement from the
sun.
  |
|

|
Cause: |
| untreated
asphalt loosing its binder. |
| Repair/ Prevention: |
| sealcoating
pavement, stop oxidation. |
|
| 1 |
2 |
3 |
4 |
5 |
|
|
None |
Many |
  |
| Long
Cracks:
|
|
cracks
spaced evenly apart (about 12 feet) and parallel.
  |
|

|
Cause: |
| weak
joints caused by asphalt seam being colder than the other
seam during installation process. |
| Repair/ Prevention: |
| crackfilling
with hot pour rubber. |
| 1 |
2 |
3 |
4 |
5 |
|
|
None |
Many |
  |
| Oil
Spots:
|
|
staining of asphalt at
parking areas that deteriorate the pavement surface.
  |
|

|
Cause: |
| oil
dripping from vehicles, overfilling of gas tanks. |
| Repair |
| thermal
repair of application of an oil spot primer prior to
sealcoating. |
| Prevention: |
| sealcoating
new asphalt 30-60 days after installation. |
| 1 |
2 |
3 |
4 |
5 |
|
|
None |
Many |
  |
| Raveling:
|
|
an ongoing separation of
the aggregate particles from the pavement surface.
  |
|

|
Cause: |
| the
sun's rays oxidize the pavements binder, causing the
stones (aggregate) to separate. |
| Repair |
| sealcoating
of pavement. |
| Prevention: |
| sealcoating
new asphalt 30-60 days after installation. |
| 1 |
2 |
3 |
4 |
5 |
|
|
None |
Many |
  |
| Alligator
Cracks:
|
|
a brittle area of pavement
that resembles alligator skin.
  |
|

|
Cause: |
| stress
in the asphalt or sub base. |
| Repair |
| removal
of deteriorated asphalt and possibly removal of sub base
with satisfactory material. |
| Prevention: |
| proper
pavement/sub base installation, timely crackfilling or a
pavement maintenance program. |
| 1 |
2 |
3 |
4 |
5 |
|
|
None |
Many |
  |
| Potholes:
|
|
holes in pavement of
various sizes.
  |
|

|
Cause: |
| insufficient
pavement thickness, drainage problems or just weak joints. |
| Repair |
| overlay
patch area, removal and replace area or infrared thermal
repair. |
| Prevention: |
| proper
construction and/or proper crackfilling. |
| 1 |
2 |
3 |
4 |
5 |
|
|
None |
Many |
  |
| Heaving
Asphalt:
|
|
the layers of asphalt push
up and/or sink leaving an uneven pavement.
  |
|

|
Cause: |
| sub
base
problems/water seeping into ground and freezing pushing up
pavement. |
| Repair |
| removal
and replacement of pavement and sub base. |
| Prevention: |
| proper
pavement and sub base installation. |
| 1 |
2 |
3 |
4 |
5 |
|
|
None |
Many |
  |
| Polished
Stone:
|
|
aggregates in pavement are
smooth and polished, possibly slick in wet conditions.
  |
|

|
Cause: |
| high
traffic areas wear the surface quicker. |
| Repair: |
| sealcoat
with a heavy sand mixture to hold aggregate together and
to eliminate slippery conditions. |
| 1 |
2 |
3 |
4 |
5 |
|
|
None |
Many |
  |
| Grade
Depressions:
|
|
areas in pavement that are
low and limited in size often with standing water.
  |
|

|
Cause: |
| traffic
may be heavier than pavement was designed for or a sub
base
condition could exist. |
| Repair: |
| infrared
thermal patching is great for most of these problems but,
a sub base problem could exist. |
| 1 |
2 |
3 |
4 |
5 |
|
|
None |
Many |
  |
| Reflective
Cracking:
|
|
a surface crack in a
resurfaced parking lot or in a patched area.
  |
|

|
Cause: |
| movement
in pavement below surface layers. |
| Repair |
| fill
cracks if few or remove and replace deteriorated areas. |
| Prevention: |
| remove
deteriorated areas before resurfacing the driveway or
parking lot. |
| 1 |
2 |
3 |
4 |
5 |
|
|
None |
Many |
  |
|