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Indexed by:会议论文

Date of Publication:2012-06-22

Included Journals:EI、CPCI-S、Scopus

Volume:539

Page Number:230-234

Key Words:Compressive strength ratio; Metakaolin; Burning temperature; Pozzolanicity

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 degrees C, 750 degrees C, 800 degrees C and 850 degrees 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 degrees C, the optimum proportion of metakaolin in cement is 10%similar to 15%.