Evolution of micro-mechanical properties of cement and fly-ash composite measured by nanoindentation over one year period

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00323480" target="_blank" >RIV/68407700:21110/18:00323480 - 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
Evolution of micro-mechanical properties of cement and fly-ash composite measured by nanoindentation over one year period
Original language description
This study shows an application of nanoindentation in characterization of micro-mechanical response of two cementitious composites at the age of 28 days and 1-year. Pure Portland cement and Portland cement with 50 vol.% fly-ash replacement pastes were studied. Grid nanoindentation, statistical deconvolution and scanning electron microscopy were used for characterization of their main hydration products at microscale. About 700 indents were performed on each sample. Similar mechanical response was found for 28 days on both composites while a progress in reaction and mechanical maturing was found for one year old samples. Additional stiffening was produced by delayed reaction of fly-ash in the composite leading to higher elastic modulus for the main reaction phase.
Czech name
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Czech description
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Project
<a href="/en/project/GA17-05360S" target="_blank" >GA17-05360S: Small-scale fracturing of amorphous and crystalline materials assessed with nanoindentation and focused ion beam</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 12th International fib PhD Symposium in Civil Engineering
ISBN
978-80-01-06401-6
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
117-122
Publisher name
ČVUT v Praze, Fakulta stavební
Place of publication
Praha
Event location
Praha
Event date
Aug 29, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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