Detection of roadbed layers in mountainous area using down-up-crosshole penetrometer and ground penetrating radar

Sang Yeob Kim, Seonghun Kang, Geunwoo Park, Dongsoo Lee, Yujin Lim, Jong Sub Lee

Research output: Contribution to journalArticlepeer-review

Abstract

The characteristics and depths of the old roadbed layers must be assessed for the serviceability and rehabilitation of aging road pavements. This study's objective is to detect roadbed layers in mountainous areas using the obtained stiffness profile and ground penetrating radar (GPR) results. Down-up-crosshole penetrometer (DUCP), GPR, and light falling weight deflectometer (LFWD) tests were conducted to determine the overlay, surface, base, subbase, antifrost, and subgrade layers. The results show that the dynamic cone penetration index DCPI, shear modulus calculated by the shear wave velocity, and GPR image capture each layer. The elastic modulus estimated by the shear modulus is corrected by considering the strain influence factor and matches the LFWD modulus, despite the ranges of values differing owing to the disparate strain level. Therefore, the DUCP can be applied to roadbeds in mountainous areas to assess the stiffness at each layer as well as to detect the layer interface.

Original languageEnglish
Article number113889
JournalMeasurement: Journal of the International Measurement Confederation
Volume224
DOIs
Publication statusPublished - 2024 Jan

Bibliographical note

Publisher Copyright:
© 2023 Elsevier Ltd

Keywords

  • Down-up-crosshole penetrometer (DUCP)
  • Ground penetrating radar (GPR)
  • Layer interface
  • Light falling weight deflectometer (LFWD)
  • Stiffness

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering

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