Construction and testing of self-drilled soil nails

Slobodan B. Mickovski, Fraser M. Lindsay, Martyn J. Smith

Research output: Contribution to journalArticle

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Abstract

Current standards and best practice guidance recognise that testing of self-drilled hollow bar soil nails can be problematic as conventional packers and debonded lengths cannot be constructed. As a result, this provides difficulty in testing and confirming the ultimate bond resistance within the passive zone of a soil nailed slope, and thus the design soil nail lengths.
This paper provides a summary and review of the various testing procedures adopted for a soil nail construction project in Scotland. The practical design considerations, and their validation through the installation and testing of 49 sacrificial test nails, are detailed. The construction issues associated with the nail installation and testing are also outlined and discussed in the light of the results obtained using different testing approaches. The aim of this case study is to report on the experiences with installation and testing of hollow bar soil nails. The objectives is to develop an initial data base of available soil-grout bond strength of hollow bar soil nails based on the several practical installation procedures used on this project and to establish areas for improvement of
installation, testing and quality control in order to perform comparable pullout tests on self-drilled hollow bar soil nails.
Original languageEnglish
Pages (from-to)541-553
Number of pages13
JournalProceedings of the ICE: Geotechnical Engineering
Volume169
Issue number6
Early online date14 Nov 2016
DOIs
Publication statusPublished - Dec 2016

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Nails
Soils
Testing
soil
pullout test
Packers
grout
quality control
Quality control

Keywords

  • Geotechnical engineering
  • field testing
  • monitoring
  • anchors
  • anchorages

Cite this

Mickovski, Slobodan B. ; Lindsay, Fraser M. ; Smith, Martyn J. / Construction and testing of self-drilled soil nails. In: Proceedings of the ICE: Geotechnical Engineering. 2016 ; Vol. 169, No. 6. pp. 541-553.
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Construction and testing of self-drilled soil nails. / Mickovski, Slobodan B.; Lindsay, Fraser M.; Smith, Martyn J.

In: Proceedings of the ICE: Geotechnical Engineering, Vol. 169, No. 6, 12.2016, p. 541-553.

Research output: Contribution to journalArticle

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