Comparative structural response of UHPC and normal strength concrete columns under combined axial and lateral cyclic loading

Mahmoud Aboukifa, Mohamed A. Moustafa, Ahmad Itani

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

Abstract

Ultra-High Performance Concrete (UHPC) is a versatile building material as it is characterized by very high compressive strengths reaching 30 ksi [200 MPa], ductile tensile characteristics, and energy absorption. Currently, UHPC is commonly used in limited structural applications, such as joints and connections between precast structural elements. To extend the use of UHPC in full structural elements, a better understanding of the structural behavior and failure mechanism of such elements is needed. One potential application of UHPC for structural elements is columns, which is the focus of this study. This paper presents an experimental investigation of the behavior of UHPC column subjected to combined axial and lateral loading. A large-scale UHPC column is tested under axial and quasi-static cyclic lateral loading at the Earthquake Engineering Laboratory at the University of Nevada, Reno. To establish a comparison with conventional columns, a normal strength concrete (NSC) column with same dimensions and design as the tested UHPC column is analytically modeled and analyzed under similar loading protocol using OpenSEES. The experimental response of the UHPC column is evaluated and compared to the analytical response of the NSC column. Both global and local behavior are presented and discussed to include damage progression, failure type, peak moment strength, stiffness degradation, and displacement and curvature ductility.

Original languageEnglish (US)
Title of host publicationStructural Performance of Concrete Columns Incorporating Advanced Materials and Structural Systems
EditorsMohamed A. ElGawady
PublisherAmerican Concrete Institute
Pages71-96
Number of pages26
ISBN (Electronic)9781641951050
StatePublished - Jul 17 2020
EventStructural Performance of Concrete Columns Incorporating Advanced Materials and Structural Systems at the Concrete Convention and Exposition 2018 - Las Vegas, United States
Duration: Oct 14 2018Oct 18 2018

Publication series

NameAmerican Concrete Institute, ACI Special Publication
VolumeSP-341
ISSN (Print)0193-2527

Conference

ConferenceStructural Performance of Concrete Columns Incorporating Advanced Materials and Structural Systems at the Concrete Convention and Exposition 2018
Country/TerritoryUnited States
CityLas Vegas
Period10/14/1810/18/18

Keywords

  • Ductility
  • Large-scale testing
  • Seismic behavior
  • UHPC column

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • General Materials Science

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