Arno Hefer Administrator Posts: 18 1/11/2022

Arno Hefer Administrator Posts: 18 Estimates based on the DSN800 Parameter A fair estimate of the structural capacity of well-balanced pavements with unbound materials can be obtained with DCP measurements. The empirical relation between the structural capacity and the total number of DCP blows to penetrate 800 mm into the pavement (DSN800) is as follows: Reference: E. G. Kleyn (1984). Aspects of Pavement Evaluation and Design as determined with the Dynamic Cone Penetrometer. M Eng Thesis (in Afrikaans), Faculty of Engineering, University of Pretoria. DCP Penetration Rate - CBR Cover Requirement Relationships The following equation can be used to determine the required DCP penetration rate (DCP Number or DN, mm/blow) at a certain depth within the pavement for an expected future traffic loading demand. Covered required/ depth = 196 x Log(Expected Traffic Load) + 457 x Log(DN) - 1285 The calculated required rate of penetration at a certain depth can then be superimposed on the measured layer-strength diagram. Reference: G. J. Jordaan (1989). Guidelines Towards the Use of a Rehabilitation Design Method Based on Dynamic Cone Penetrometer (DCP) Measurements as Developed in South Africa. Research Report DPVT 43, CSIR, Pretoria. edited by on 1/15/2022 edited by on 1/17/2022 edited by on 1/17/2022

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