Correlating dynamic segregation of self-consolidating concrete to the slump-flow test

Nathan Tregger; Amedeo Gregori; Liberato Ferrara; Surendra Shah

doi:10.1016/j.conbuildmat.2011.08.052

Correlating dynamic segregation of self-consolidating concrete to the slump-flow test

Nathan Tregger^*, Amedeo Gregori, Liberato Ferrara, Surendra Shah

^*Corresponding author for this work

Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

The three key characteristics of self-consolidating concrete are flowability, segregation resistance and passing ability. Quality control of flowability is typically predicted by the final diameter (D _F) of the slump-flow test. In this study, the time required to reach the final diameter (T _F) of the slump-flow test is correlated to dynamic segregation for mixes with a constant D _F and aggregate-to-binder ratio. Segregation was determined by measuring the radial aggregate distribution from the slump-flow test. It was demonstrated that increasing the T _F improved dynamic segregation resistance. It was also found that the T _F was more indicative of viscosity than the time to reach a diameter of 50 cm (T ₅₀).

Original language	English (US)
Pages (from-to)	499-505
Number of pages	7
Journal	Construction and Building Materials
Volume	28
Issue number	1
DOIs	https://doi.org/10.1016/j.conbuildmat.2011.08.052
State	Published - Mar 2012

Keywords

Segregation
Self-consolidating concrete
Slump-flow test
T
Viscosity
Yield stress

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
Materials Science(all)

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10.1016/j.conbuildmat.2011.08.052

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title = "Correlating dynamic segregation of self-consolidating concrete to the slump-flow test",

abstract = "The three key characteristics of self-consolidating concrete are flowability, segregation resistance and passing ability. Quality control of flowability is typically predicted by the final diameter (D F) of the slump-flow test. In this study, the time required to reach the final diameter (T F) of the slump-flow test is correlated to dynamic segregation for mixes with a constant D F and aggregate-to-binder ratio. Segregation was determined by measuring the radial aggregate distribution from the slump-flow test. It was demonstrated that increasing the T F improved dynamic segregation resistance. It was also found that the T F was more indicative of viscosity than the time to reach a diameter of 50 cm (T 50).",

keywords = "Segregation, Self-consolidating concrete, Slump-flow test, T, Viscosity, Yield stress",

author = "Nathan Tregger and Amedeo Gregori and Liberato Ferrara and Surendra Shah",

note = "Funding Information: The research presented in this paper was funded by the Infrastructure Technology Institute of Northwestern University, the Center for Advanced Cement-Based Materials and the National Science Foundation (Award CMS 0625606). Their financial support is gratefully acknowledged. The first author would also like to recognize the support of Lombardia regional council for research conducted at the Politecnico di Milano (code AZ#2). The third author wishes to acknowledge the financial support of the Fulbright foundation, whose grant made his first stay possible at Northwestern University, during which this study was initiated. Lastly, the authors would like to acknowledge Mark Roberts of W.R. Grace for his assistance with the statistical analyzes. ",

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doi = "10.1016/j.conbuildmat.2011.08.052",

language = "English (US)",

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AU - Gregori, Amedeo

AU - Ferrara, Liberato

AU - Shah, Surendra

N1 - Funding Information: The research presented in this paper was funded by the Infrastructure Technology Institute of Northwestern University, the Center for Advanced Cement-Based Materials and the National Science Foundation (Award CMS 0625606). Their financial support is gratefully acknowledged. The first author would also like to recognize the support of Lombardia regional council for research conducted at the Politecnico di Milano (code AZ#2). The third author wishes to acknowledge the financial support of the Fulbright foundation, whose grant made his first stay possible at Northwestern University, during which this study was initiated. Lastly, the authors would like to acknowledge Mark Roberts of W.R. Grace for his assistance with the statistical analyzes.

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N2 - The three key characteristics of self-consolidating concrete are flowability, segregation resistance and passing ability. Quality control of flowability is typically predicted by the final diameter (D F) of the slump-flow test. In this study, the time required to reach the final diameter (T F) of the slump-flow test is correlated to dynamic segregation for mixes with a constant D F and aggregate-to-binder ratio. Segregation was determined by measuring the radial aggregate distribution from the slump-flow test. It was demonstrated that increasing the T F improved dynamic segregation resistance. It was also found that the T F was more indicative of viscosity than the time to reach a diameter of 50 cm (T 50).

AB - The three key characteristics of self-consolidating concrete are flowability, segregation resistance and passing ability. Quality control of flowability is typically predicted by the final diameter (D F) of the slump-flow test. In this study, the time required to reach the final diameter (T F) of the slump-flow test is correlated to dynamic segregation for mixes with a constant D F and aggregate-to-binder ratio. Segregation was determined by measuring the radial aggregate distribution from the slump-flow test. It was demonstrated that increasing the T F improved dynamic segregation resistance. It was also found that the T F was more indicative of viscosity than the time to reach a diameter of 50 cm (T 50).

KW - Segregation

KW - Self-consolidating concrete

KW - Slump-flow test

KW - T

KW - Viscosity

KW - Yield stress

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Correlating dynamic segregation of self-consolidating concrete to the slump-flow test

Abstract

Keywords

ASJC Scopus subject areas

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