United States Department of Transportation
i
Developing guidelines for repairing severe edge failures : technical report.
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2014-04-01
[PDF-14.28 MB]
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Abstract:This report presents various edge failures, the methods used by districts to repair them, and the results of the
repair. While there was no clear consensus on the best treatment of in-situ material for pavements with edge
failures, the districts agreed that an up-front investigation should be conducted, samples should be obtained
and tested, and widening the pavement contributes to a reduced risk of edge failure. Special treatments may
be necessary when dealing with pavements that have no shoulders, steep front slopes, and/or subgrade soils
of high plasticity.
Researchers found that geogrid reinforcement is beneficial to reducing longitudinal edge cracking, but will
not totally eliminate edge cracking problems. Scarifying and reshaping the existing material with
stabilization, combined with a flexible base overlay has shown good performance. Without a uniform cross
section, simply widening the pavement can result in cracking problems at the longitudinal construction joint.
This report also provides guidelines for repairing severe edge failures.
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