A field investigation of pullout resistance of steel anchors in rock

Jiho Park, Tong Qiu, Younguk Kim

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

This paper presents a field investigation of pullout resistance of steel anchors in rock. The field testing involves pullout tests of six steel anchors installed in biotite gneiss rock by gravity grouting and pressure grouting methods. The field pullout tests suggest a progressive failure mechanism, which was manifested through the progressive elongation of the bond zone. The pressure-grouted anchors yielded higher pullout resistance than did the gravity-grouted anchors. The increase in rock-grout bond strength from pressure grouting is likely due to a combination of several factors, including the resultant higher grout strength, higher rock-grout contact stresses, and grout injected under pressure into the fractures/fissures that existed in the bedrock.

Original languageEnglish (US)
Pages (from-to)609-616
Number of pages8
JournalGeotechnical Special Publication
Issue number233
DOIs
StatePublished - Jan 1 2014

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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