Apparatus determines the relative density of cohesionless, free-draining soils and provides well-defined results on soils that do not respond well to conventional moisture-density impact compaction testing. Soils for which this method is appropriate may contain up to 12 percent of soil particles passing a No. 200 (75μm) sieve, depending on the distribution of particle sizes, which causes them to have free-draining characteristics. Relative density of cohesion less soils uses vibratory compaction to obtain maximum density and pouring to obtain minimum density.

Humboldt Mfg. Co. 3801 North 25th Avenue Schiller Park, IL 60176, phone: 1.800.544.7220 - 1.708.456.6300, fax: 1.708.456.0137International Sales phone: 1.708.456.6300fax: 1.708.456.5412