COMBINED INVESTIGATION OF LOW-SCALE FRACTURE IN HYDRATED CEMENT ASSESSED BY NANOINDENTATION AND FIB
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00301617" target="_blank" >RIV/68407700:21110/16:00301617 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.21012/FC9.244" target="_blank" >http://dx.doi.org/10.21012/FC9.244</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.21012/FC9.244" target="_blank" >10.21012/FC9.244</a>
Alternative languages
Result language
angličtina
Original language name
COMBINED INVESTIGATION OF LOW-SCALE FRACTURE IN HYDRATED CEMENT ASSESSED BY NANOINDENTATION AND FIB
Original language description
This paper deals with an assessment of fracture properties of micro-level components of hydrated cement paste. Fracture energy and fracture toughness are studied by means of several experimental techniques at the micrometer scale. Nanoindentation is used as a primary tool for the material characterization. The work includes analysis of fracture mechanisms under the sharp indenter using focused ion beam (FIB) technology combined with scanning electron microscopy (SEM). Usual microscale approaches used in brittle solids are based on the observation of cracks from surface view after indentation. In this work, an energetic approach and decomposition of work of indentation into plastic and other parts is used instead. Based on cross sectioning of indents via FIB, several assumptions are done on the fracture area under the tip and semi-quantitative estimates of the low-scale fracture energy are performed for the cement paste components. Statistical deconvolution is applied to sort out the individual phase fracture properties.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
JN - Civil engineering
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA16-11879S" target="_blank" >GA16-11879S: Rehabilitation of Reinforced Concrete Structures by Simultaneous Chloride Removal and Nanoparticle Injection</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů