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Article
Shaking-Table Testing of High Energy-Dissipating Rubberized Concrete Columns
Journal of Bridge Engineering
  • Ayman Moustafa
  • Ahmed Gheni
  • Mohamed ElGawady, Missouri University of Science and Technology
Abstract

This paper presents the results of the first shake-table tests of a large-scale rubberized concrete column. The rubberized column was formed by replacing 20% of the volume of fine aggregate with crumb rubber. The response of the rubberized column was compared to that of a conventional bridge column. Both columns had the same construction details, and the only difference was the material used. Both columns were subjected to a sequence of scaled historical ground motion recorded in the Northridge-01 1994 earthquake with near-fault pulse-like characteristics. The conventional column formed a flexural plastic hinge with rebar fracture after 14 scaled test runs, corresponding to 140% of the design earthquake. The rubberized column experienced the rebar fracture after 19 test runs, corresponding to 190% of the design earthquake. The rubberized column achieved a strength that was only 3% lower than that of the conventional column. Moreover, the rubberized column displayed a 12.5% increase in the lateral drift capacity. The dissipated energy of the rubberized column increased by 16.5% compared with the conventional column.

Department(s)
Civil, Architectural and Environmental Engineering
Keywords and Phrases
  • Concrete construction,
  • Concrete testing,
  • Concretes,
  • Earthquake effects,
  • Energy dissipation,
  • Fracture,
  • Geophysics,
  • Bridge columns,
  • Rubberized concrete,
  • Scrap tires,
  • Seismic behavior,
  • Shaking table tests,
  • Earthquakes,
  • Shaking-table test
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2017 American Society of Civil Engineers (ASCE), All rights reserved.
Publication Date
8-1-2017
Publication Date
01 Aug 2017
Disciplines
Citation Information
Ayman Moustafa, Ahmed Gheni and Mohamed ElGawady. "Shaking-Table Testing of High Energy-Dissipating Rubberized Concrete Columns" Journal of Bridge Engineering Vol. 22 Iss. 8 (2017) ISSN: 1084-0702
Available at: http://works.bepress.com/mohamed-elgawady/45/