The Dynamic Cone Penetrometer (DCP) is an instrument which can be used for the rapid measurement of the in situ strength of existing flexible pavements constructed with unbound materials. Measurements can be made down to a depth of 800 mm or to a maximum depth of 1500 mm by adding an extension rod. Where the pavement layers have different strengths, the
boundaries between them can be identified and the thickness of each layer determined using the software program called UK DCP 2.2. This software program is available free from the web site www.transport-links.org/ukdcp. The installation process will install the program along with the User Manual in the user's computer.
This Technical Information Note describes the DCP test procedure, provides guidance on details to be collected from each test and highlights the use of various outputs produced by UK DCP 2.2.