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HomeKey Engineering MaterialsKey Engineering Materials Vol. 539The Preparation and Pozzolanic Activity of...

The Preparation and Pozzolanic Activity of Metakaolin Admixtures

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Abstract:

The optimum burning temperature of kaolinite and the optimum proportion of metakaolin (MK) in cement paste were studied by the compressive strength ratio method. Metakaolin was obtained at different burning temperature of 700°C, 750°C, 800°C and 850°C for 4 hours, and mixed into cement with the incorporation of 0, 5wt.%, 10wt.%, 15wt.% and 20wt.%. At last, the mechanical properties were researched. The influence of different burning temperature on hydration products of metakaolin cement mortar were analyzed. The results show that the compressive strength ratio of metakaolin cement mortar and the metakaolin pozzolanicity reach the maximum when the metakaolin obtained by heat treating of 750°C, the optimum proportion of metakaolin in cement is 10%~15%.

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Periodical:

Key Engineering Materials (Volume 539)

Pages:

230-234

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.539.230

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Online since:

January 2013

Authors:

Bao Min Wang, Yuan Zhang, Ming Li

Keywords:

Burning Temperature, Compressive Strength Ratio, Metakaolin (MK), Pozzolanicity

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