Tinius Olsen

TO-567 - Pavement Dynamic Cone Penetrometer

Series: TO-567
Pavement Dynamic Cone Penetrometer


Simple and robust for rapid in-situ measurement of the structural properties of road pavements.

Fast and efficient method of obtaining information.

For continuous measurements up to a depth of 800mm and 1200mm 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 evaluation of strength of sub-grade and the bases for roads and runway pavements. Continuous measurements can be made down to a depth of 800mm or, when an extension is fitted, to a depth of 1200mm. 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, so this instrument provides a very efficient method of obtaining information that would normally require test pits. Correlations have been established between measurements with DCP and California Bearing Ratio (CBR) so that the 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.


Technical Specification