Learn free Civil Engineering by Civilustaad about PUSHING” AND “SHOVING” ARE DEFORMATIONS OF THE PAVEMENT SURFACE

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PUSHING” AND “SHOVING” ARE DEFORMATIONS OF THE PAVEMENT SURFACE

Pushing” and “Shoving” are deformations of the pavement exterior. They are most frequent in intersections, where there is braking and stopping traffic. It is easiest to identify at intersections where transverse striping becomes “wavy”.

“Delamination” is sections of a surface layer that have come free from the pavement.

Cause: 
Unstable Mix

Poor interlayer bond

Poor construction

Braking, stopping, accelerating traffic

Slippage between layers

Poor interlayer bond

Heavy trucks

Moisture damage

Poor construction

Solutions - Prevention: 

The use of quality design, quality liquid asphalt, quality aggregate, and quality construction
Elastomeric polymer modified binders have been found to be especially effective.

A good tack between layers