Dynamic Cone Penetration Test – Test Instruments India | Under 1 Roof 1679 Testing Instruments To Chose!

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Dynamic Cone Penetration Test

dynamic_cone_penetration_test

Dynamic Cone Penetration Test (SL-GT-079)
The Dynamic Cone Penetrometer (DCP) is used for rapid in-situ
measurement of the structural properties of exsisting road pavement
constructed with unbound materials.The unit incorporates an 8 kg
weight having a drop of 575 mm, fitted to the end of the shaft is a 20
mm diameter cone. With the standard DCP measurements can be
made down to a depth of approximately 850 mm. Readings are
usually taken after a set number of blows, changing the number
according to the strength of the layer being penetrated. For good
granular bases, readings every 5 – 10 blows are satisfactory, but for
weaker sub-base layers and subgrades, readings every 1 – 2 blows
may be appropriate The DCP requires three operators, one to hold
the instrument in a vertical position, one to raise the hammer and let
it fall and one to record the results. A typical test takes only a few
minutes, providing a very efficient method of obtaining information
which would otherwise require the excavation of test pits. Where
pavement layers have different strengths, boundaries can be
identified and layer thickness

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