UM
Selection of superplasticizer in concrete mix design by measuring the early electrical resistivities of pastes
Xiao L.-z.2; Li Z.-j.2; Wei X.-s.1
2007-05-01
Source PublicationCement and Concrete Composites
ISSN09589465
Volume29Issue:5Pages:350-356
AbstractElectrical resistivity measurement was used to study the early setting and hardening process of pastes, with different dosages, for 2 types of superplasticizer. The inflection point (P) was found on the differential curve of electrical resistivity for each sample. A time ratio, K, is defined as the inflection time ratio of the pastes with superplasticizer to the paste without superplasticizer and a resistivity ratio, K, is defined as the ratio of resistivity of the pastes with superplasticizer to the resistivity of paste without superplasticizer at 24 h. The results show that K is linearly positive to setting time and K is linearly positive to compressive strength at 24 h. The criterion for the selection of superplasticizer is proposed using these definitions. The most suitable superplasticizer is one which gives the mixture a higher K with a longer setting time and a higher K with a rapid strength gain in the hardening period for the saturation dosage at a fixed water cement ratio. © 2007 Elsevier Ltd. All rights reserved.
KeywordElectrical resistivity Saturation point Setting and hardening Superplasticizer
DOI10.1016/j.cemconcomp.2006.12.015
URLView the original
Language英語
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Cited Times [WOS]:40   [WOS Record]     [Related Records in WOS]
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
Xiao L.-z.,Li Z.-j.,Wei X.-s.. Selection of superplasticizer in concrete mix design by measuring the early electrical resistivities of pastes[J]. Cement and Concrete Composites,2007,29(5):350-356.
APA Xiao L.-z.,Li Z.-j.,&Wei X.-s..(2007).Selection of superplasticizer in concrete mix design by measuring the early electrical resistivities of pastes.Cement and Concrete Composites,29(5),350-356.
MLA Xiao L.-z.,et al."Selection of superplasticizer in concrete mix design by measuring the early electrical resistivities of pastes".Cement and Concrete Composites 29.5(2007):350-356.
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