Static and fatigue push-out tests of short headed shear studs embedded in Engineered Cementitious Composites (ECC)

Yiming Liu, Qinghua Zhang, Yi Bao, Yizhi Bu

Research output: Contribution to journalArticlepeer-review

73 Scopus citations

Abstract

Engineered Cementitious Composites (ECC) is a family of high-performance fiber-reinforced cementitious composites with high tensile ductility and emerging in steel-concrete composite structures. In the composite structures, shear force transfer through shear connectors plays a critical role to integrate the steel and concrete. This study experimentally investigates the static and fatigue behaviors of short studs embedded in ECC through push-out tests of nine specimens. The test results of the shear strength, slip capacity, and fatigue resistance are compared with current design codes. The shear strength agrees well with that obtained from AASHTO LRFD, while the Eurocode 4 and Chinese code underestimate the shear strength. The slip capacity satisfies the ductility requirement in Eurocode 4. Based on the fatigue tests results, an S-N curve related to a survival probability of 95% is proposed. Empirical formulas are derived as a tool to help predict the load-slip behavior of the specimen under fatigue loading.

Original languageEnglish
Pages (from-to)29-38
Number of pages10
JournalEngineering Structures
Volume182
DOIs
StatePublished - 1 Mar 2019

Keywords

  • Engineered Cementitious Composite
  • Load-slip curve
  • Push-out test
  • S-N curve
  • Shear connector
  • Short headed stud
  • Steel-ECC composite structure

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