Dynamic mechanical thermo-analysis of Portland cement paste hydrated for 45 years

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DOIResolve DOI: http://doi.org/10.1617/s11527-014-0500-7
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TypeArticle
Journal titleMaterials and Structures/Materiaux et Constructions
ISSN1359-5997
SubjectDynamics; Hydration; Porosity; Portland cement; Powders; Ageing effects; Cement paste; Dynamic mechanical; Hydrated cement pastes; Mechanical response; Nanostructural characteristics; Portland cement paste; Structural models; Dynamic mechanical analysis
AbstractThe effect of prolonged hydration of Portland cement paste on engineering behavior was investigated using dynamic mechanical thermo-analysis (DMTA) methods. Specimens ranged in age from 3 days to 45 years. Compacts of hydrated cement powders and normally hydrated paste specimens were tested. Age dependent nanostructural characteristics of C–S–H were shown to influence the mechanical response of cement paste. Evidence was provided to support the use of compacts as structural models for hydrated cement paste. Details of ageing effects on the DMTA parameters (storage modulus and internal friction) as a function of temperature and porosity are reported.
Publication date
PublisherSpringer International Publishing
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Construction
Peer reviewedYes
NPARC number21275606
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Record identifier00dd834a-969b-47d3-8df3-b93d0aac44f3
Record created2015-07-14
Record modified2016-05-09
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