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Open AccessArticle

Effect of Eggshell Powder on the Hydration of Cement Paste

1
Korea Research Institute on Climate Change, 11, Subyeongongwon-gil, Chuncheon-si 24239, Korea
2
Department of Resources Recycling, University of Science & Technology, 217 Gajeong-ro, Gajeong-dong, Yuseong-gu, Daejeon 34113, Korea
3
Center for Carbon Mineralization, Mineral Resources Division, Korea Institute of Geosciences and Mineral (KIGAM), 124 Gwahagno, Gajeong-dong, Yuseong-gu, Daejeon 34132, Korea
*
Author to whom correspondence should be addressed.
Materials 2019, 12(15), 2483; https://doi.org/10.3390/ma12152483
Received: 7 July 2019 / Revised: 27 July 2019 / Accepted: 31 July 2019 / Published: 5 August 2019
Eggshells are one of the solid wastes in the world and are considered hazardous according to European Commission regulations. The utilization of solid wastes, like eggshells, will help create a sustainable environment by minimizing the solid wastes that are disposed into the environment. The utilization of eggshell powder in cement also helps to reduce the carbon dioxide emissions from cement factories by reducing clinker production. In this study, the effect of eggshell powder on the hydration of cement products was investigated using X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). Pastes were made with 10% and 20% eggshell powder and examined for 1, 14, and 28 days of hydration. The addition of eggshell powder transformed ettringite to monosulfoaluminate and to monocarboaluminate. In 20% eggshell powder, the formation of monocarboaluminate was detected in the early stages and accelerated the hydration reaction. The CaCO3 from the eggshells reacted with the C3A and changed the hydration products of the pastes. The addition of eggshell powder provided nucleation sites in the hydration products and accelerated cement hydration. View Full-Text
Keywords: utilization; eggshell powder; cement; hydration; monocarboaluminate utilization; eggshell powder; cement; hydration; monocarboaluminate
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MDPI and ACS Style

Shiferaw, N.; Habte, L.; Thenepalli, T.; Ahn, J.W. Effect of Eggshell Powder on the Hydration of Cement Paste. Materials 2019, 12, 2483. https://doi.org/10.3390/ma12152483

AMA Style

Shiferaw N, Habte L, Thenepalli T, Ahn JW. Effect of Eggshell Powder on the Hydration of Cement Paste. Materials. 2019; 12(15):2483. https://doi.org/10.3390/ma12152483

Chicago/Turabian Style

Shiferaw, Natnael; Habte, Lulit; Thenepalli, Thriveni; Ahn, Ji W. 2019. "Effect of Eggshell Powder on the Hydration of Cement Paste" Materials 12, no. 15: 2483. https://doi.org/10.3390/ma12152483

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