Pavement Dynamic Cone Penetrometer

Pavement Dynamic Cone Penetrometer Pavement Dynamic Cone Penetrometer Product Code: EKE 567

EKE 56701 Top and Bottom Rod
EKE 56702 Handle
EKE 56703 Hammer
EKE 56704 1 m Scale
EKE 56705 60° Cone
EKE 56706 Anvil

A simple and robust instrument for rapid in-situ measurement of the structural properties of road pavements Provides fast and efficient method of obtaining information For continuous measurements to a depth of 800 mm and 1,200 mm with the extension rod Portable, and can be accommodated in a carrying case

The Pavement Dynamic Cone Penetrometer (DCP) is a very robust instrument, designed for rapid in-situ measurement of the structural properties of existing road pavement constructed with unboundmaterials. Continuous measurements can be made down to a depth of 800 mm, or when an extension is fitted, to a depth of 1200 mm. Where pavement layers have different strengths, the boundaries can be identified and the thickness of the layers determined. A typical test takes only a few minutes and the instrument therefore, provides a very efficient method of obtaining information which would normally require test-pits. Correlations have been established between measurements with DCP and California Bearing Ratio (CBR), so that results can be interpreted and compared with CBR specifications for pavement design. Agreement is generally good over most of the range, but differences are apparent at low values of CBR, especially for fine grained materials. The design of the pavement DCP is similar to that described by Kleyn, Maree and Savage (1982) in their paper. The application of the pavement DCP to determine the bearing properties and performance of road pavements published in proceedings of International Symposium on Bearing capacity of roads and airfields, Vol.1, (The Norwegian Institute of Technology) and developed by TRRL, UK. It incorporates a 8 kg weight dropping through a height of 575 mm and a 60º cone having a diameter of 20 mm. It is supplied complete with assembly tools and weighs 20 kg approx.
The DCP needs three operators, one to hold the instrument, one to raise and drop the weight and a technician to record the results. The instrument is held vertically and the weight carefully raised to the handle limit and then allowed to fall onto the anvil.