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AASHTO TP 68
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AASHTO TP 68 4th Edition, 2008 Standard Method of Test for Density of In-Place Hot Mix Asphalt (HMA) Pavement by Electronic Surface Contact Devices
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Description / Abstract:
This method covers the in-place determination of the total
density and relative compaction of HMA pavements by measuring
changes in the electromagnetic field resulting from the compaction
process.
The equipment referenced in this method is a surface contact device that is relatively unaffected by the surface moisture and surface variances in temperature typically encountered during HMA paving operations. If needed, it should include circuitry to measure/compensate for moisture and temperature variances during the material compaction process.
This procedure does not purport to address all of the safety concerns associated with its use. It is the responsibility of the user of this procedure to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
The equipment referenced in this method is a surface contact device that is relatively unaffected by the surface moisture and surface variances in temperature typically encountered during HMA paving operations. If needed, it should include circuitry to measure/compensate for moisture and temperature variances during the material compaction process.
This procedure does not purport to address all of the safety concerns associated with its use. It is the responsibility of the user of this procedure to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.