IMPROVED FLOW-NO-FLOW TESTER

摘要

An instrument for measuring certain physical properties of a sample of particulate material so that the flow characteristics of the material can be determined includes an improved compaction assembly having an upper piston (30) that is surrounded by a retractable sleeve (22) and further includes an improved test cell (40) having cylindrical walls (54), having a failure outlet smaller than the diameter of the failure piston (30), and having a false bottom (58) that can easily be removed from beneath a sample of compacted material to permit the failure portion of the test to be carried out. The tester can be used for determining the confined yield strength of the material, its bulk density, and its permeability.