Cracks Perpendicular to Pavement

09-19-2018 02:55 PM
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09-20-2018 02:04 PM

If that is asphalt pavement over a concrete base then it is likely that those are reflective cracks at the concrete joints.  Very common in this type of overlay with and without thermal factors.

09-20-2018 08:52 AM

​​That looks to be a subbase issue, not a surface failure. You can see how deep the cracks go.  Also, usually transverse cracking that is uniformly spaced is caused by a concrete road base joint. Do a core test to see what the base is.

Surface failure is typically seen as meandering cracks tightly spaced together, also known as alligator cracking (like the back of an alligator!). The larger the space between the cracks, the deeper the problem is.

09-20-2018 08:40 AM

Asphalt pavement overlaid on PCC base? The transverse cracks occur where there are joints in the concrete.

09-20-2018 06:09 AM

​Where is this located?  If a freeze environment, then yes, could be low temperature related thermal cracking.  Results from contraction of the asphalt concrete due to low temperature and friction of the base restricts movement resulting in regularly spaced transverse cracking.

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