NDLI: A coupled AC impedance—creep and shrinkage investigation of hardened cement paste

Content Provider	Springer Nature Link
Author	Tamtsia, B. T. Beaudoin, J. J. Marchand, J.
Copyright Year	2003
Abstract	The effect of three pre-drying treatments (prior to resaturation 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.L’effet de trois traitements de pré-séchage (suivi d’une resaturation avec une solution interstitielle synthétique) sur les déformations différées a été investigué.Les traitements de pré-séchage consistent en un séchage sous vide à 37°C d’éprouvettes avant et après immersion dans un solvant (méthanol ou isopropanol). Les modifications causées par la charge appliquée sur la microstructure étaient suivies en temps réel par le biais du couplage d’un analyseur de fréquences d’impédance avec un système de chargement miniature.Les éprouvettes de pâte de ciment étaient de petites colonnes en forme de T ayant une épaisseur minimale d’environ 1 mm. L’analyse des spectres d’impédance inclue une évaluation de la pertinence de l’angle de dépression sur le fluage et le retrait de la pâte de ciment.
Starting Page	147
Ending Page	155
Page Count	9
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	36
Issue Number	3
e-ISSN	18716873
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2003-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Theoretical and Applied Mechanics Structural Mechanics Mechanical Engineering Operating Procedures, Materials Treatment Civil Engineering Building Materials
Content Type	Text
Resource Type	Article
Subject	Building and Construction Mechanics of Materials Materials Science Civil and Structural Engineering

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