Determination of Micromechanical Properties of Cement Paste by Integration of Numerical Analysis and Experimental Nanoindentation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F06%3A01130094" target="_blank" >RIV/68407700:21110/06:01130094 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Determination of Micromechanical Properties of Cement Paste by Integration of Numerical Analysis and Experimental Nanoindentation
Original language description
In the present study, we examine the ability of FE models with several constitutive relations (elastic, elastic-plastic, linear and nonlinear viscoelastic and their combination) to reproduce the response of a C-S-H phase of hardened cement paste measuredin a cyclic nanoindentation experiment. It is found that the linear viscoelastic model, which fits very well a single loading-dwell-unloading cycle, does not properly describe the consequent cycles. The best results are obtained with a combined nonlinear viscolelastic and plastic model. A parametric study is performed to identify the model parameters. The model is then employed to analyze various aspects of the experiments, such as, the size of indent influence zone, the distribution of residual stresses and strains, the effect of indenter shape simplification (pyramidal to axisymmetric cone), the effect of material inhomogeneity in the indent vicinity, and others.
Czech name
Určení mikromechanikých vlastností cementové pasty pomocí integrace numerické analýzy a experimentální nanoondentace
Czech description
Určení mikromechanikých vlastností cementové pasty pomocí integrace numerické analýzy a experimentální nanoondentace.

Project
<a href="/en/project/GA103%2F05%2F0896" target="_blank" >GA103/05/0896: Assessment of durability of Engineered Cementitious Composites based on study and modeling of their microstructure</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2006
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
WCCM VII-7th World Congress on Computational Mechanics
ISBN
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ISSN
0965-0393
e-ISSN
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Number of pages
1
Pages from-to
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Publisher name
Omipress
Place of publication
Wisconsin
Event location
Los Angleles, CA
Event date
Jul 16, 2006
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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