Dynamic Cone Penetrometer

Desc : The Dynamic Cone Penetrometer (DCP) is used to measure the rate of penetration through the various layers of a pavement. The DCP component (layer by layer) analysis method is empirically derived based on material shear strength and can only be accurate if used for the evaluation and analysis of pavements similar to those from which they were derived.

It follows that the DCP test provides meaningful, but incomplete information about the expected behavior of a pavement. Although in-situ material shear strength data are relatively complete with the DCP, if found applicable, it can give extremely good results and information about the future behavior of a pavement. It follows that the key to the successful application of empirically derived methods based on CBR and/or DCP measurements lies in the applicability of the method to a specific pavement. It is, however, advised that the method be used in a multi-analysis approach together with other methods.

The figure aside shows a schematic of the DCP.

Conducting the test and collecting data

The DCP test is conducted by lifting and dropping the hammer onto the anvil, and measuring the penetration of the DCP cone into the pavement layers. Data are typically collected by measuring the penetration after each 5 blows, up to a total depth of 800 mm.

Price : Rs.9500

Dynamic Cone Penetrometer: According to DIN 4094

Desc : The basic outfit consists of :
Drop weight:10Kg,
The Lightweight Dynamic Cone Penetrometer is used to establish the thickness of different strata, when testing compaction works and to determine the relative density of fills and naturally deposited non-cohesive soils.
If the ground is not too compacted, penetration tests can be carried out up to about 8 to 12 metres.

The Lightweight Dynamic Cone Penetrometer consists of:
10 Kg drop rammer, 500 mm. fall and anvil
11 1 metre x 22mm diameter sounding rods, complete with threaded collar and guiding rod
Grooved rod to extract samples
2 drive points 90 Degree, with 5 cm2 and 10 cm2 surface
Lifting device for sounding rod, accessories
Carrying case

Price : Rs. 27500