Dynamic cone penetrometer standard penetration test
The Lab expression Dynamic round shape Penetrometer (DCP) is an supporter premeditated for the rapid in-situ measuring of the structural properties of existing travelling pavements constructed of unfettered materials. The robust and simplistic organisation means that the DCP is immediate and easy to use, portable and suitable for use in locations where find may be difficult. Correlations have been implanted 'tween measurements with the DCP and conventional in-situ CBR so that results can be taken and compared with CBR specifications for sidewalk design.
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Dynamic Cone Penetrometer
The original can-do Cone Penetrometer (DCP) was industrial in 1959 by the latish prof st. george F. The DCP uses a 15 lb (6.8 kg) weapon large-scale toppling 20 in (50.8 cm) that strikes the anvil to cause penetration of a 1.5 in (3.8 cm) diameter strobile (45° apex angle) that has been seated in the lower of a hand augered hole. The blows compulsory to drive the enclosed retinal cone a wisdom of 1-3/4 in have been correlate by others to N colour property calculable from the Standard Penetration Test (SPT). The cone can be replaced with a plated Drive thermionic valve assemblage for publication of 3 x 10 in (7.6 x 25.4 cm) tube samples in power 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 drill trial Set for 10 ft abjection includes: As a concerned item, the Sleeved campaign Hammer, S-20000, has been studied to provide a safe effectuation of disposal the DCP Test in accordance with ASTM STP-399, the well-nigh widely accepted portable method for evaluating force 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 test know-how is used to determine in situ strength of untroubled dirt and compacted materials (or both). The penetration range of the 8-kg [17.6-lb] DCP can be ill-used to estimate in-situ CBR (California heading Ratio), to identify strata thickness, fleece asset of strata, and other physical characteristics. This way is typically used to assess crucial properties down to a extent of g mm [39 in.] below the surface.
Dynamic Cone Penetrometer (DCP)