AASHTO T 224-10

This method describes a procedure for adjusting the densities of soil and soil aggregate mixtures tocompensate for differing percentages of coarse particles retained on either the 4.75-mm (No. 4) or19.0-mm (¾-in.) sieve. This is necessary to adjust either the field wet density to a dry density ofthe material passing these sieves or the reverse, by adjusting the lab density to the field densitywhen doing compaction control testing. Comparisons are made by comparing the field densitieswith the maximum dry density as determined by T 99 or T 180.