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Question
What causes pavement failures?
Answer
There are two common causes of pavement failure. First, if a pavement was built
on a subbase that was not structurally sound, the pavement will deteriorate prematurely.
The second and most common cause is water penetration. If your pavement does not
drain well or has cracks, water penetrates the pavement and causes subbase failures.
Question
What can I do to prevent pavement failures?
Answer
Periodic and preventative maintenance is the key. Budget money for crack filling
on a yearly basis. Typically a few hundred dollars a year in crack filling will
save you thousands in patching when resurfacing is required. If deteriorated pavement
is caused by poor subbase conditions, periodic patching may be required to keep
those areas from spreading.
Question
Do I need to replace all of the deteriorated pavement?
Answer
Typically not. Pavements are only designed for a 15 year life cycle and random fatigue
cracking and slight deteriorations are to be expected. Simply adding a new 2" surface
over the existing paving will seal the cracks and deteriorated areas and solve the
problem.
Question
How often should I resurface asphalt pavement?
Answer
Every 15 years, your lot should be resurfaced.
Question
What is Superpave?
Answer
SUPerior PERforming asphalt PAVEments. These new mixes were designed to reduce rutting
and to reduce low temperature fatigue cracking. The mixes are generally not as pleasing
to look at but have much more durability. Your contractor must have the equipment
and knowledge to work with these new mixes.
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