Effects of alkalinity on early age shrinkage characteristic of cement-based materials

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Status	已發表Published
	Effects of alkalinity on early age shrinkage characteristic of cement-based materials
	He Z.1; Liang W.1; Chen M.1; Li Z.3; Ma B.2
	2004-10-01
Source Publication	Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society
ISSN	04545648
Volume	32 Issue:10 Pages:1293-1298
Abstract	Initial cracking time, electrical resistivity and rate of heat evolution of cement-based materials with different alkalinities were measured by an ellipsis-ring cracking apparatus with an automatic monitoring system, non-contact resistivity instrument and JAF calorimeter, respectively. Results show that the alkali accelerates the hydration process of portland cement but shortens greatly the initial cracking time of mortar, especially at a lower water-cement ratio. Moreover, there is an interactive effect between the initial cracking time and resistivity inflexion, as well as maximum heat peak. A ratio of resistivity step/heat step (as K value) indicates a relation between early-age deformation and alkali content of cement-based materials.
Keyword	Alkali Cement-based materials Early age Hydration Shrinkage
URL	View the original
Language	英語English
Fulltext Access	View Full-Text via Scopus
Document Type	Journal article
Collection	University of Macau
Affiliation	1.Wuhan University 2.Wuhan University of Technology 3.Hong Kong University of Science and Technology
Recommended Citation GB/T 7714	He Z.,Liang W.,Chen M.,et al. Effects of alkalinity on early age shrinkage characteristic of cement-based materials[J]. Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society, 2004, 32(10), 1293-1298.
APA	He Z.., Liang W.., Chen M.., Li Z.., & Ma B. (2004). Effects of alkalinity on early age shrinkage characteristic of cement-based materials. Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society, 32(10), 1293-1298.
MLA	He Z.,et al."Effects of alkalinity on early age shrinkage characteristic of cement-based materials".Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society 32.10(2004):1293-1298.

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