Materials and Structures

, Volume 45, Issue 7, pp 1087–1100 | Cite as

Repeatability, responsiveness and relative cost analysis of SCC workability test methods

  • Nicolas Ali Libre
  • Rahil Khoshnazar
  • Mohammad Shekarchi
Original Article

Abstract

There are several workability test methods proposed to evaluate workability of self-consolidating concrete (SCC). Most of these methods are not standard, and their reliability is still under question. In this study, a comprehensive experimental program and statistical analysis were performed to evaluate the repeatability, responsiveness and relative cost of commonly used SCC workability test methods. Ten different tests including the slump flow, V-funnel, J-ring, L-box, U-box, column segregation, segregation probe, flow trough, sieve stability and surface bleeding tests were considered herein. For evaluating the suitability of these tests, each test was repeated several times on SCC mixtures with different workability levels. The obtained results show that the slump flow and the J-ring tests are well suited for evaluating the flowability, and the segregation probe, column segregation and surface bleeding tests are appropriate tests for assessing the stability of SCC. Furthermore, when SCC is planned for use in congestly reinforced members, it is recommended to use the U-box and the V-funnel tests in addition to the former ones to ensure the passing ability of SCC mixture and avoid any blockage.

Keywords

Self-consolidating concrete Workability test methods Repeatability Responsiveness Relative cost 

Mathematical Subject Classification (2000)

62P30 

Notes

Acknowledgments

This study was supported by Islamic Azad University, Qazvin branch. The authors would like to express their gratitude to Dr. Zahraei, Miss Abbasi and Miss khani for their advice with this study. The authors would also like to acknowledge Construction Materials Institute, university of Tehran for providing the lab equipment, the essentials materials, advice and help whenever required.

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Copyright information

© RILEM 2011

Authors and Affiliations

  • Nicolas Ali Libre
    • 1
  • Rahil Khoshnazar
    • 2
    • 3
  • Mohammad Shekarchi
    • 3
  1. 1.Department of Civil EngineeringIslamic Azad University, Qazvin BranchQazvinIran
  2. 2.Department of Civil Engineering, Faculty of EngineeringUniversity of OttawaOttawaCanada
  3. 3.Construction Materials Institute (CMI), School of Civil EngineeringUniversity of TehranTehranIran

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