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Even though asphalt is flexible pavement, it is a still
susceptible to cracking and crackfilling is one of the
most important preventative maintenance procedures. General
cracking in the asphalt pavement does not mean that the
pavement or sub-base has failed. However, unsealed cracks
leave a gateway for water and moisture to seep into the
sub-grade and cause pumping, expanding and contracting
of the soil due to changing moisture content. |
| Cracks ¼" or wider are initially cleaned free
of debris using compressed air. The cracks are then filled
with a hot rubberized cracksealer. Cracksealer is applied
at over 300F, which allows it to ooze down and fill the
voids completely. |
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| Cracksealing is a cost effective maintenance procedure
that acts as a barrier to moisture and bonds cracked
pavement together. American Asphalt also recommends that
a sealcoat be applied with the cracksealing to fill all
of the minor voids in the pavement's surface. |
