Abstract
A new type of magnesia modification alkali-activated cement was prepared, the strength, setting time, shrinkage ratio and cracking behavior, as well as the composition and structure of the hydration product were investigated. The results indicate that the setting time of this cement is similar to that of the ordinary commercial cements; its strength reaches the standard of 42.5 degree cement, its cracking resistance has been remarkably improved because of the micro-aggregate effect of fly ash and shrinkage compensating of magnesia.
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References
Shen Weiguo, Cai Zhi, Liu Zhimin, et al. Humble Talk about Low Carbon Dioxide Emission Technique for Cement-concrete Industry[J]. Cement Guide For New Epoch, 2008 (4): 1–7(in Chinese)
Palomo A, Gruzeck M W, Blanco M T. Alkali-activated Fly Ash: A Cement for the Future[J]. Cement and Concrete Research, 1999, 29(8): 1 323–1 329
Wang S, Pu X, Scrivener K L, et al. Alkali-activated Slag Cement and Concrete: A Reviewer of Properties and Problem [J]. Advances in Cement Research, 1995, 27(7): 93–102
Collins F, Sanjayan J G. Cracking Tendency of Alkali-activated Slag Concrete Subjected to Restrained Shrinkage[J]. Cement and Concrete Research, 2000, 30(4): 791–798
Collins F, Sanjayan J G. Effect of Pore Size Distribution on Drying Shrinkage of Alkali-activated Slag Concrete[J]. Cement and Concrete Research, 2000, 30(10): 1 401–1 406
Shen Weiguo, Zhou Mingkai, Xiao Liqi, et al. Morphology Difference between the Alkali-activated Cement and Portland Cement Paste Multi-scale[J]. Journal of Wuhan University of Technology, 2008, 23(6): 923–926
Shen Weiguo, Zhou Mingkai, Wang Yiheng, et al. An Anti-cracking Alkali-activated Cement[P]. CN Patent, No.200910060408.7
He Zhen, Li Zongjin. Influence of Alkali on Restrained Shrinkage Behavior of Cement-based Materials[J]. Cement and Concrete Research, 2005, 35(3): 457–463
Vandeperre L J, Liska M, Al-Tabbaa A. Microstructures of Reactive Magnesia Cement Blends [J]. Cement and Concrete Composites, 2008, 30(8): 706–714
Liska M, Al-Tabbaa A. Performance of Magnesia Cements in Pressed Masonry Units with Natural Aggregates: Production Parameters Optimization[J]. Construction and Building Materials, 2008, 22(8): 1 789–1 797
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Funded by the National Basic Research Program of China (No.2009CB23201) and the Open Foundation of National Key Laboratory of Green Building Materials (No.CBM-08-KF103)
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Shen, W., Wang, Y., Zhang, T. et al. Magnesia modification of alkali-activated slag fly ash cement. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 26, 121–125 (2011). https://doi.org/10.1007/s11595-011-0182-8
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DOI: https://doi.org/10.1007/s11595-011-0182-8