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Posted by Roscoe P Pendoscoe on May 18, 2008, 8:36 am
wrote:
>
>> (snipped)
>>
>>
>> There are lots of visually different looking areas, some smooth, some
>> with open, crevice like spots.
>>
>> Thanks for the info.
>>
>> Knowledge is like money, the less you talk about it
>> the more people assume you have.
>
>For starters, bituminous concrete is a flexible pavement (as opposed to
>portland cement concrete), minor flaws in subbase preparation may cause a
>depression, no cracks.
>
>You mentioned different textures, a couple of likely causes for this are, 1.
>material from the plant differed, i.e., sloppy batching, 2. Material was
>allowed to cool too much before placement and initial rolling. A crack
>across the entire width suggests that it may have been a stop/start location
>with less than ideal joint preparation or finishing. If the whole thing was
>done in one day there is no need to tack coat the joints, but temperature is
>critical. Asphalt can be shoveled or raked long after the temp. drops too
>much ( about 275F most mixes should leave the plant at about 325F) to
>achieve acceptable compaction and finish.
>
>Tom
>
>
Sorry for late thanks for the information but consider it greatly
appreciated.
Rick
Knowledge is like money, the less you talk about it
the more people assume you have.
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