Abstract
Activation of the slag cement was performed using a composite activator. Experimental results show that the performance of the cement is remarkably improved. The fineness and specific surface area of the cement are increased by 23.7% and 1.4%, and 3 d flexural strength and compressive strength are enhanced by 20.9% and 22.9%, respectively. Microstructure and phase composition of the hydrates were analysed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results indicate that Ca(OH)2 in the hydrates decrease obviously. The morphology of the other hydrates appears to be flocculent, with a dense structure. The improvements of the properties is related to the microstructural changes.
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References
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GUO Jun-cai: Born in 1950
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Jun-cai, G., Xin, X. & Yan-wu, X. Microstructure and properties of activated slag cement. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 19, 81–82 (2004). https://doi.org/10.1007/BF02838371
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DOI: https://doi.org/10.1007/BF02838371