Effect of Supplementary Cementitious Materials on the Rheology of Blended Cements

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Title: Effect of Supplementary Cementitious Materials on the Rheology of Blended Cements

Author(s): Ashok. K. Tiwari, Maulik. M. Panseriya, Prakash C. Mathur, and Subrato Chowdhury

Publication: Special Publication

Volume: 303

Issue:

Appears on pages(s): 205-216

Keywords: Blended cement; marsh cone; mini slump; rheology; supplementary cementitious materials

Date: 6/1/2015

Abstract:
The workability of blended cement-based materials depends strongly on the rheology of the paste, which depends on various properties of its components. In this study the influence of specific surface area and water-binder ratio on the yield stress and viscosity of blended cement pastes were investigated. Both rheological parameters were seen to vary for the evaluated design parameters. These rheological parameters were also compared with two simple tests, mini slump and Marsh cone. It was learned that there is a strong relationship between yield stress and surface area of pastes; however, the surface area did not influence the viscosity of the pastes. It was also seen that the marsh cone was a better test, compared to the mini slump cone test, to understand the rheology of blended cement based pastes.