UM
Influence of calcium sulfate state and fineness of cement on hydration of Portland cements using electrical measurement
Wei X.1; Li Z.2; Xiao L.2; Thong W.2
2006-12-01
Source PublicationJournal Wuhan University of Technology, Materials Science Edition
ISSN10002413
Volume21Issue:4Pages:141-145
AbstractThe influence of calcium sulfate state and fineness of cement on hydration of Portland cement was studied using electrical resistivity measurement. The bulk resistivity curve of the paste from the abnormal cement mainly with hemihydrate had a characteristic abnormal peak and rapid increase in early period. The resistivity measurement technique can be used to discriminate abnormal setting. For normal cement with gypsum, the increase in fineness of the Portland cement decreases the minimum resistivity due to a higher ionic concentration and increases the 24 hour resistivity due to a reduction in macroscopic pore size. The setting time, compressive strength, pore structure of pastes made from different cements were carried out to compare the influence of water to cement ratio, calcium sulfate state and fineness. It is found that the electrical and mechanical properties are strongly affected by the initial porosity, the presence of hemihydrate or gypsum, and the fineness of cement.
KeywordElectrical resistivity False setting Fineness Hydration
DOI10.1007/BF02841225
URLView the original
Language英語
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Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Huazhong University of Science and Technology
2.Hong Kong University of Science and Technology
Recommended Citation
GB/T 7714
Wei X.,Li Z.,Xiao L.,et al. Influence of calcium sulfate state and fineness of cement on hydration of Portland cements using electrical measurement[J]. Journal Wuhan University of Technology, Materials Science Edition,2006,21(4):141-145.
APA Wei X.,Li Z.,Xiao L.,&Thong W..(2006).Influence of calcium sulfate state and fineness of cement on hydration of Portland cements using electrical measurement.Journal Wuhan University of Technology, Materials Science Edition,21(4),141-145.
MLA Wei X.,et al."Influence of calcium sulfate state and fineness of cement on hydration of Portland cements using electrical measurement".Journal Wuhan University of Technology, Materials Science Edition 21.4(2006):141-145.
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