Bowl-shaped depression in the pavement surface resulting from the loss of wearing course or base materials.
Pothole
Loss of a discreet area of a wearing course layer due to poor bonding between the surface and the lower layer.
Delamination
It often occurs as a result of poor bonding or adhesion between layers.
Slippage Cracking
Edge of bituminous surface fretted, broken, or irregular.
Edge Break
Breakdown or disintegration of slab surface at the edges, joints, corners, or
cracks.
Spalling
A depressed or broken part of a slab resulting from pavement cracking or
disintegration of concrete.
Punch Out
CAUSES OF POTHOLES
Inadequate Thickness
Non-uniform distribution of materials
Poor asphalt mix
Poor Drainage
These are interconnected or interlaced cracks forming a series of small polygons resembling an alligator hide.
Alligator Cracks
CAUSES OF ALLIGATOR CRACK
Load related deterioration resulting
from a weakened base course or subgrade
Too little pavement thickness
Overloading
This is the bulging of the road surface generally parallel to the direction of the traffic and/or horizontal displacement of surfacing materials, mainly in the direction of traffic where braking or acceleration movement occur.
Shoving
A form of plastic movement resulting in localized bulging of the pavement surface,
occurs at points where traffic starts and stops or on hills where vehicles break on the downgrade.
Shoving
CAUSES OF SHOVING
Cause by excess asphalt
Too much fine aggregate
Use of round aggregates
Too soft an asphalt weak granular base
Refers to transverse undulations, closely and regularly spaced, with wavelengths of less than two meters.
Corrugations
CAUSES OF CORRUGATION
Attributed to excessive moisture in
the subgrade
Lack of aeration of liquid asphalt
emulsion
A longitudinal deformation in a wheel path. May occur in one or both wheel paths of a lane.
Rutting
CAUSES OF RUTTING
Failure in the lower pavement layers
Poor construction method
Consolidation of the foundation soil
Localized area within the pavement with elevations lower than the surrounding area. May not be confined to wheel paths and could extend to several wheel paths.
Depressions
CAUSES OF RUTTING
Caused by settlement or other failure
in the lower pavement layers
Poor construction method
Consolidation of the foundation soil
