Effect of Fly Ash and Nano-CaCO3 on the Viscosity of Cement Paste

Ren Juan Sun; Zhi Qin Zhao; Da Wei Huang; Gong Feng Xin; Shan Shan Wei; Ge Zhi

doi:10.4028/www.scientific.net/AMM.357-360.968

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 357-360Effect of Fly Ash and Nano-CaCO3 on the Viscosity...

Effect of Fly Ash and Nano-CaCO₃ on the Viscosity of Cement Paste

Abstract:

The effect of fly ash and nanoCaCO₃ on the viscosity of pastes was studied. The rheological value of cement paste was determined by the rotation rheometer NXS-11B. In the study, five different dosages (0%, 20%, 30%, 40%, and 50%) of fly ash and three levels of nanoCaCO₃, 0.5%, 1%, and 2.5%, were considered. Viscosity of the pastes, made with fly ash and nanoCaCO₃at a constant water-to-binder ratio of 0.35, were measured and analyzed. The results indicate that the pastes with fly ash or/and nanoCaCO₃still fit the Bingham model. The addition of fly ash reduced viscosity, however, the addition of nanoCaCO₃ increased viscosity. The effect of nanoCaCO₃ is more significantly than fly ash on viscosity.

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Periodical:

Applied Mechanics and Materials (Volumes 357-360)

Pages:

968-971

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.357-360.968

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Online since:

August 2013

Authors:

Ren Juan Sun*, Zhi Qin Zhao, Da Wei Huang, Gong Feng Xin, Shan Shan Wei, Ge Zhi

Keywords:

Cement Paste, Fly Ash (FA), Nano-CaCO₃, Rheometer, Viscosity

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