Application of GEM equation in microstructure characterization of cement-based materials
Zhang J.2; Li Z.1
Source PublicationJournal of Materials in Civil Engineering
AbstractThis study proposes an analytical model to relate the evolving microstructure of neat cement paste during hydration to the electrical resistivity measurement. The model is based on the general effective media theory and considers the contributions of both the low-resistivity phase (capillary pores) and the high-resistivity phase (gels and solids) in cement-pastes. The major parameters in the proposed model are the microstructural properties such as capillary pore percolation threshold and pore structure parameter, capillary pore phase and solid-gel phase resistivities. To validate the model, an empirical relationship between the resistivity formation factors and the phase volume fractions of a series of cement pastes has been built up with the assistance of noncontact electrical resistivity measurement and mercury intrusion porosimetry technique. The good agreement between the model and experimental data shows that it is feasible to obtain better understandings of the evolving microstructure of cement paste during the hydration using electrical resistivity measurement. Furthermore, based on the log-linear increase of resistivity with time, the porosity up to an age of a few months can be predicted by the proposed model. The predicted results show a good correlation with the experimental results in previous studies. © 2009 ASCE.
KeywordCement Electrical resistivity Microstructures Porosity
URLView the original
Fulltext Access
Citation statistics
Cited Times [WOS]:30   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Hong Kong University of Science and Technology
2.Princeton University
Recommended Citation
GB/T 7714
Zhang J.,Li Z.. Application of GEM equation in microstructure characterization of cement-based materials[J]. Journal of Materials in Civil Engineering,2009,21(11):648-656.
APA Zhang J.,&Li Z..(2009).Application of GEM equation in microstructure characterization of cement-based materials.Journal of Materials in Civil Engineering,21(11),648-656.
MLA Zhang J.,et al."Application of GEM equation in microstructure characterization of cement-based materials".Journal of Materials in Civil Engineering 21.11(2009):648-656.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang J.]'s Articles
[Li Z.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang J.]'s Articles
[Li Z.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang J.]'s Articles
[Li Z.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.