A Re-examination of creep mechanisms in hydrated cement systems

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ConferenceProceedings Materials Science of Concrete Workshop: 17 April 2000, Eagle Creek, Illinois
Pages112; # of pages: 12
AbstractMechanisms of creep of hydrated Portland cement paste are reviewed with reference to the role of water. The coupling of an a.c. impedance analyzer with a miniature loading system was used to follow real-time microstructural changes due to sustained load. Various pre-drying treatments (including use of solvent exchange methods) were used to probe the sensitivity of the creep process to microstructural change and the presence or absence of moisture. Characterization of the water in the paste was carried out using a controlled environment differential thermogravimetric technique. Evidence suggests that the presence of water is not an 'à priori' condition for creep. A creep mechanism involving microsliding between C-S-H sheets appears to be compatible with the experimental evidence.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number44012
NPARC number20331187
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Record identifierddef3739-5d4a-40df-bbc0-8b6db99f66b0
Record created2012-07-18
Record modified2016-05-09
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