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Compressive Yield Stress of Cement Paste

Published online by Cambridge University Press:  21 February 2011

Kelly T. Miller ,
Wei Shi ,
Leslie J. Struble  and
Charles F. Zukoski
Kelly T. Miller
Affiliation:
Department of Chemical Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
Wei Shi
Affiliation:
Department of Chemical Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
Leslie J. Struble
Affiliation:
Department of Civil Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
Charles F. Zukoski
Affiliation:
Department of Chemical Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
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Abstract

Compressive yield stresses have been measured for pastes (0.35 ≤ w/c ≤ 0.50) of portland cement, calcium aluminate cement, and weakly and strongly flocculated alumina (Φ0 = 0.20) using the centrifuge sediment height technique. Equilibrium sediment heights are reached quickly, allowing all measurements to be taken during the cement's induction period. The compressive behavior showed little dependence on the compressive history. Compressive yield stress was, however, dependent upon initial volume fraction, decreasing as the initial volume fraction increases. This behavior was observed in both the cements and alumina suspensions, implying that strong dependencies on initial structure may be a general property of the compressive behavior of flocculated suspensions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 370: Symposia Va/Vb – Microstructure of Cement-Based Systems/Bonding and Interfaces in Cement... , 1994 , 285
Copyright
Copyright © Materials Research Society 1995

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