Page 8 - EBS Pavement Protection System Brochure

Block Cracking - is interconnected cracks forming large blocks. Cracks usually intersect at
right angles. Block cracks range from 30cm to 6 meters or more across. The closer spacing
indicates more advanced aging caused by shrinking and hardening of the asphalt over time.
Solution: repair with EBS seal coating during early stages to reduce weathering effects.
Overlay required in advanced stages.

Alligator cracks – interconnected cracks forming small pieces. Caused by failure of the
surfacing due to traffic loading (fatigue) and inadequate base or sub-grade support.
Solution: repair by excavating local areas, replace base and surface, improve drainage,
re-surface and overlay with EBS.

Patches - Patches with cracking, settlement or distortions indicate underlying causes still
remain. Indicates a pavement defect or needed excavation.
Solution: original surface repaired with EBS and crack/patch material. Recycling or
reconstruction is required when extensive patching shows distress.

Potholes - Holes and loss of pavement material caused by traffic loading, fatigue and
inadequate strength. Often combined with poor drainage.
Solution: repair by excavating or rebuilding localized potholes using EBS.
Reconstruction required for extensive defects, and use EBS to seal the surface.

Deterioration of pavement surfaces has two general causes:
Ø Environmental due to weathering and aging.
Ø Structural caused by repeated traffic loadings.

The rate and manner in which pavement deterioration occur are important factors in determining the best
and most cost effective repairs.

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The condition of the pavement surface is what will determine the remedy :

Pavement Protection System – EBS Nano polymer Overlay Sealant Treatment
Ø Applied to new asphalt surfaces
Ø Surface defects: Raveling, Flushing, Polishing
Ø Longitudinal Cracks
Ø Block cracks (early stages)
Ø Wheel Rutting (fill and repair then overlay seal)
Ø Alligator cracks (thick layer) if structural strength remains

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