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Factors Affecting Compaction for projects

2015-4-20 11:17:06

 Environmental factors are determined by when and where paving occurs.  Paving operations may have some float time, which allows a limited choice of “when” but paving location is determined by road location so there is essentially no choice of “where”.

Mix and structural design factors are determined before construction and although they should account for construction practices and the anticipated environment, they often must compromise ease of construction and compaction to achieve design objectives.

Obviously construction factors are the most controllable and adaptable of all the factors affecting compaction.  Although some factors like haul distance/time, HMA production temperature, lift thickness and type/number of rollers may be somewhat predetermined, other factors associated with roller timing, speed, pattern and number of passes can be manipulated as necessary to produce an adequately compacted mat.

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