Early age cement hydration behavior by resistivity method

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	Early age cement hydration behavior by resistivity method
	Sui T.1; Zeng X.1; Xie Y.3; Li Z.4; Wei X.2; Fan L.1; Wen Z.1
	2008-04-01
Source Publication	Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society
ISSN	04545648
Volume	36 Issue:4 Pages:431-435
Abstract	The resistivity of cement pastes in the early age was tested, according to the changes of resistivity and Ca(OH) content in the hardened pastes, cement hydration can be divided into four stages: the dissolution period, the induction period, the acceleration period and the deceleration period. The resistivity grows quickly when the induction period begins, differential scanning calorimeter and thermogravimetry analysis indicated that there were intermediate products at that time, which might be calcium aluminate hydrates. The encapsulating effect of this quickly formed hydration products leads to the occurring of the induction period, which is consistent with the protective layer theory. The derivate curve of resistivity reaches a maximum in the acceleration period. X-ray diffraction analysis shows that this maximum was related to ettringite (AFt) transition to monosulfoaluminate (AFm). The hydration heat rate curve corresponds well with the derivate curve of resistivity. Resistivity shows a linear relationship with the Ca(OH) content after the induction period, the resistivity change reflects well the hydration degree.
Keyword	Calcium hydroxide Early age hydration Ettringite Hydration degree Resistivity
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.China Building Materials Academy 2.Huazhong University of Science and Technology 3.Central South University China 4.Hong Kong University of Science and Technology
Recommended Citation GB/T 7714	Sui T.,Zeng X.,Xie Y.,et al. Early age cement hydration behavior by resistivity method[J]. Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society, 2008, 36(4), 431-435.
APA	Sui T.., Zeng X.., Xie Y.., Li Z.., Wei X.., Fan L.., & Wen Z. (2008). Early age cement hydration behavior by resistivity method. Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society, 36(4), 431-435.
MLA	Sui T.,et al."Early age cement hydration behavior by resistivity method".Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society 36.4(2008):431-435.

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