OPWWCOptimum Pre-Wetting Water Content (asphalt)
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The optimum pre-wetting water content (OPWwc) that gave the best asphalt coating on the mineral aggregates (in which the mixture is not too sloppy or too stiff) then can be determined.
The loose mixtures were compacted at OPWwc and at varying water content at compaction with 1 % steps by air drying.