Definition Pavement Condition Assessment of Surface Condition

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a. Excellent

Pavement is new construction .Nothing would improve the roadway at this time.

b. Very Good

Pavement structure is stable, with no cracking, no patching, and no deformation evident. Roadways in this category are usually fairly new. Riding qualities are excellent. Nothing would improve the roadway at this time.

c. Good

Pavement structure is stable, little cracking and no deformation evident. Little maintenance would improve the roadway at this time.

d. Fair

Pavement structure is generally stable with minor areas of structural weakness evident. Cracking is easier to detect. The pavement may be patched but not excessively. Although riding qualities are good, deformation is more pronounced and easily noticed.

e. Poor

Areas of instability, marked evidence of structural deficiency, large crack patterns alligator heavy and numerous patches, deformation very noticeable. Riding qualities range from acceptable to poor.

f. Very Poor

Pavement is in extremely deteriorated condition. Numerous areas of instability. Majority of section is showing structural deficiency. Riding quality is unacceptable probably should slow down.

g. Failed

Pavement structure is failed, with cracking and deformation evident. Roadways in this category are usually failed. Reconstruction at this time Bashir, 2006. 46 Fig 2.20 Pavement Condition Index PCI and Rating Scale ASTM standard D 6433

2.5 Maintenance Activities

According to the Foundation for Pavement Preservation, pavement maintenance involves doing the right treatment, at the right place, at the right time. To achieve this, good management and an understanding of the choices are required David, 2006. There are different categories of maintenance activities. Some can be performed before significant deterioration occurs. An example is a chip seal done before cracks develop. Preventive maintenance must be done before even moderate cracking occurs, or it will not last as long as it should. Pavement maintenance can be described by two different categories Lavin, 2003:

a. Preventative maintenance: Activities that prevent or reduce further damage to the

pavement. Crack filling and sealing.