Q: When Should Cracks Be Sealed?
A: Immediately: Pavement cracks measuring ¼ inch or greater
will allow moisture to penetrate and potentially deteriorate
the base or sub-base, resulting in pavement failure
Q: What Are Some of the Causes of Asphalt
Failure?
A: The reasons for asphalt failure vary, but there are
consistencies in most cases including; poor drainage, lack
of maintenance, inadequate base, improper installation and
unstable subgrade components. Asphalt fails when
"fines" deteriorate from weather and excessive use by
heavy equipment and automobiles. When the fines
deteriorate the binder begins to fail and the surface begins
to ravel. Raveling weakens the pavement and allows water
to penetrate and deteriorate the base and the sub-base
causing pavement failure.
