Experimental investigation about dynamic bond-slip between reinforcing steel bar and concrete

Wei Yao, Haijun Wu*, Fenglei Huang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Citations (Scopus)

Abstract

The aim of the present research is to assess the dynamic performance of bond-slip between reinforcing steel bar and concrete. Precisely, the sensitivity of the bond stress-displacement relationship in the interface between reinforcing steel bar and concrete to strain rate is investigated. In this paper, the reinforcing steel bar/concrete specimens were tested in dynamic push-out experiments with modified split Hopkinson pressure bar (SHPB) system. The incident bar was used to apply compressive loading to single steel bar embedded in a surrounding concrete. Using this technique, the debonding progress was analyzed. Besides, the effect of loading rate and effective depth on the push-out tests was studied with the impact velocities in the range of 9 m/s - 29 m/s. It is seen that maximum push-out force increases with increasing loading rate. In addition, the dynamic interface bond force does not proportionally increase with the effective depth of steel bar.

Original languageEnglish
Title of host publicationApplied Mechanics and Mechanical Engineering III
Pages1073-1081
Number of pages9
DOIs
Publication statusPublished - 2013
Event2012 3rd International Conference on Applied Mechanics and Mechanical Engineering, ICAMME 2012 - Macau, China
Duration: 14 Nov 201215 Nov 2012

Publication series

NameApplied Mechanics and Materials
Volume249-250
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2012 3rd International Conference on Applied Mechanics and Mechanical Engineering, ICAMME 2012
Country/TerritoryChina
CityMacau
Period14/11/1215/11/12

Keywords

  • Debonding
  • Dynamic push-out experiment
  • Split hopkinson bar
  • Steel bar concrete interface

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