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Dynamic cone penetrometer standard penetration test

Published by: Cataleya Category: Double penetration

The Lab Quip Dynamic artefact Penetrometer (DCP) is an instrument studied for the rapid in-situ measuring of the geomorphological properties of extant road pavements constructed of loose-leaf materials. The hardy and simple design norm that the DCP is fast and easy to use, portable and suitable for use in locations wherever memory access may be difficult. Correlations have been recognised betwixt measurements with the DCP and conventional in-situ CBR so that results can be taken and compared with CBR specifications for paving design.

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Dynamic Cone Penetrometer

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The original changing Cone Penetrometer (DCP) was developed in 1959 by the belated academic st. george F. The DCP uses a 15 lb (6.8 kg) steel aggregative falling 20 in (50.8 cm) that strikes the incus to grounds penetration of a 1.5 in (3.8 cm) length artefact (45° extreme point angle) that has been sitting in the lowermost of a hand augered hole. The blows required to thrust the embedded cone a depth of 1-3/4 in have been correlated by others to N continuance derived from the normative incoming trial (SPT). The strobile can be replaced with a plated Drive thermionic valve forum for accumulation of 3 x 10 in (7.6 x 25.4 cm) tube samples in hand augered holes. Experience has shown that the DCP can be used effectively in augered holes to depths of 15 to 20 ft. The S-200 DCP and Auger Test Set for 10 ft wisdom includes: As a connected item, the Sleeved Drive Hammer, S-20000, has been designed to engage a safe norm of conducting the DCP effort in accordance with ASTM STP-399, the almost wide received movable method for evaluating intensiveness and density of soil, in situ.

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ASTM D6951 / D6951M - 09(2015) Standard Test Method for Use of the Dynamic Cone Penetrometer in Shallow Pavement Applications

This trial method is second hand to tax in situ strength of untroubled stain and compacted materials (or both). The penetration charge of the 8-kg [17.6-lb] DCP can be used to judgement in-situ CBR (California Bearing Ratio), to reckon strata thickness, shear strength of strata, and other than material characteristics. This assistant is typically used to assess material properties down to a depth of 1000 mm [39 in.] below the surface.
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