On Jul 1, 2:06*am, Ashton Crusher wrote:

It could be that there was not enough liquid asphalt used when it was
mixed. *It could be that too hard a grade of asphalt was used when it
was mixed. *It could be that it was not compacted properly. *Or a
combination of all those. *It could also be that the quality of the
rock was not very good, some rock absorbs too much of the asphalt and
some rock just doesn't coat very well.

Wow.

What else don't you know about asphalt...?
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- gpsman