DTIC AD0012288: A NEW TYPE PENETROMETER FOR pdf

DTIC AD0012288: A NEW TYPE PENETROMETER FOR

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The rigidense instrument was designed to measure the physical and chemical properties of underwater sediments in relations to the sinking of mines. The instrument measures the depth of penetration of an 11-cm-long, 2-cm- diam Pb a weight to which is attached a 37 deg Al cone. The rigidense measure was controlled by the smallest grade size having a weight 50% or more of the largest grade size in the sample. Only Ca-saturated clays were used in the laboratory tests. The success of sinking a mine into underwater surface sediments depends on frictional resistance in clean sand or gravel, and on cohesive resistance in clay. The rigidense instrument measures the cohesive and frictional properties of unconsolidated sediments and aids in studying their plastic properties

• Creator/s: Defense Technical Information Center
• Date: 11/1/1952
• Year: 1952
• Book Topics/Themes: DTIC Archive, Powers, M. C., JOHNS HOPKINS UNIV BALTIMORE MD CHESAPEAKE BAY INST, *PENETROMETERS, *OCEAN BOTTOM SOILS, PHYSICAL PROPERTIES, RESISTANCE, GRAVEL, SAND, DEPTH, PENETRATION, CLAY, PLASTIC PROPERTIES, FRICTION, CONICAL BODIES, SEDIMENTS, UNDERWATER, COHESION, LABORATORY TESTS, CHEMICAL PROPERTIES

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