Effect of Fly Ash and nanoCaCO3 on the Setting Time of Cement Paste

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

doi:10.4028/www.scientific.net/AMM.405-408.2885

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 405-408Effect of Fly Ash and nanoCaCO3 on the Setting...

Effect of Fly Ash and nanoCaCO₃ on the Setting Time of Cement Paste

Abstract:

This paper presents an experimental study to evaluate the effects of fly ash and nanoCaCO₃ on setting time of cement paste. The test group included the contents of fly ash was 30%, 40%, 50%, 60% and content of nanoCaCO₃ was 2.5%, 5%, 10%, 20%. Results indicate that setting time was increased with the incorporation of fly ash, shortened with the incorporation of nanoCaCO₃. The incorporation of 5% nanoCaCO₃ by mass of cementitious materials reduced initial and final setting times by 60 and 70 min, respectively. In comparison to the referenced paste with 40% fly ash. The best fly ash content appear to be 40% when nanoCaCO₃ was added.

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Periodical:

Applied Mechanics and Materials (Volumes 405-408)

Pages:

2885-2888

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.405-408.2885

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Online since:

September 2013

Authors:

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

Keywords:

Cement Paste, Fly Ash (FA), Nano-CaCO₃, Setting Time

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