Comparison of new in situ root-reinforcement measuring devices to existing techniques

G. J. Meijer, A. G. Bengough, J. A. Knappett, K. W. Loades, B. C. Nicoll

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)
96 Downloads (Pure)


Mechanical root-reinforcement is difficult to quantify. Existing in-situ methods are cumbersome, while modelling requires parameters which are difficult to acquire. In this paper, two new in-situ measurement devices are introduced (‘cork screw’ and ‘pin vane’) and their performance is compared to field vane and laboratory direct shear strength measurements in fallow and rooted soil. Both new methods show a close correlation with field vane readings in fallow soil. Tests in reinforced soil show that both new methods can be installed without significant root disturbance. The simplicity of both new methods allows for practical in-situ use and both can be used to study soil stress-strain behaviour, thus addressing some major limitations in existing methodologies for characterising rooted soil.
Original languageEnglish
Title of host publicationProceedings of the XVI ECSMGE Geotechnical Engineering for Infrastructure and Development
Subtitle of host publicationSlopes and geohazards
PublisherICE Publishing
Number of pages6
ISBN (Print)9780727760678
Publication statusPublished - 23 Nov 2015


  • root reinforcement
  • vegetation
  • In situ testing
  • corkscrew
  • pin vane


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