Study on hydration of Portland cement using an electrical resistivity method

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	Study on hydration of Portland cement using an electrical resistivity method
	Wei X.; Xiao L.; Li Z.
	2004
Source Publication	Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society
ISSN	04545648
Volume	32 Issue:1 Pages:34-38
Abstract	The electrical resistivities ρ(t) of cement pastes with different water cement ratios were measured in a non-contacting electrical resistivity measurement device. The hydration process was revealed. The electrical resistivity ρ(t) is a function of electrical resistivity of liquid phase ρ(t) and porosity φ. The results show that the hydration process can involve the dissolving period, the induction-forming and induction period, and the setting-hardening period as well. The formation of ettringite coatings results in the initial step of induction period and the breakage of the coatings due to the osmotic pressure leads to the initial step of setting and hardening period. The electrical resistivity decreases with increase of the ion concentration in the pore solution at the dissolving period. There is a slight variation on the electrical resistivity in the pore solution, and also on the ion concentration and the porosity at the induction-forming and induction period. The electrical resistivity increases with decrease of the porosity at the setting-hardening period.
Keyword	Cement Electrical resistivity Hydration Non-contacting
URL	View the original
Language	英語English
Fulltext Access	View Full-Text via Scopus
Document Type	Journal article
Collection	University of Macau
Affiliation	Hong Kong University of Science and Technology
Recommended Citation GB/T 7714	Wei X.,Xiao L.,Li Z.. Study on hydration of Portland cement using an electrical resistivity method[J]. Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society, 2004, 32(1), 34-38.
APA	Wei X.., Xiao L.., & Li Z. (2004). Study on hydration of Portland cement using an electrical resistivity method. Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society, 32(1), 34-38.
MLA	Wei X.,et al."Study on hydration of Portland cement using an electrical resistivity method".Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society 32.1(2004):34-38.

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