A Coupled A.C. impedance - creep and shrinkage investigation of hardened cement paste

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TypeArticle
Journal titleMaterials and Structures
Volume36
IssueApril
Pages147155; # of pages: 9
Subjectpre-drying, creep, shrinkage, a.c. impedance; Concrete
AbstractThe effect of three pre-drying treatments (prior to re-saturation with synthetic pore fluid) on time dependent deformation was investigated. The pre-drying treaments comprised methanol and isopropanol exchange (followed by vacuum heating at 37°C) and vacuum drying at 37°C alone. Real-time changes in microstructure due to sustained load were followed through the coupling of an a.c. impedance frequency analyzer with a miniature loading system. Cement paste specimens were in the form of T-shaped columns with minimum thickness value around 1 mm. The impedance analysis included an assessment of the relevance of the high frequency arc depression angle to creep and shrinkage behavior of cement paste.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number43925
13827
NPARC number20378780
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Record identifier445a257a-ec23-4524-91ba-448d749eccf6
Record created2012-07-24
Record modified2016-05-09
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