Impact of silica fume, fly ash, and metakaolin on the thickness and strength of the ITZ in concrete
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00331405" target="_blank" >RIV/68407700:21110/19:00331405 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.cemconcomp.2019.05.012" target="_blank" >https://doi.org/10.1016/j.cemconcomp.2019.05.012</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cemconcomp.2019.05.012" target="_blank" >10.1016/j.cemconcomp.2019.05.012</a>
Alternative languages
Result language
angličtina
Original language name
Impact of silica fume, fly ash, and metakaolin on the thickness and strength of the ITZ in concrete
Original language description
The interfacial transition zone (ITZ) has a major detrimental impact on the structural performance of concrete. This negative impact can be modulated by introducing mineral admixtures to a concrete mix, which fill the excessive voids within ITZ and react with portlandite to form more compact products. The approach described here, consisting of characterization of phases and micromechanical modeling, enabled assessment of the effect of silica fume, fly ash, and metakaolin on ITZ thickness and strength. The proposed model was based on the Mori-Tanaka scheme coupled with an estimation of deviatoric stress within ITZ. This study suggests that silica fume is efficient in reducing ITZ thickness, while the addition of fly ash more significantly contributes to ITZ strength. Moderate replacements of Portland cement for silica fume or fly ash, up to 20%, can positively influence concrete performance; in case of metakaolin, replacement up to 10% is recommended.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20101 - Civil engineering
Result continuities
Project
<a href="/en/project/GA17-19463S" target="_blank" >GA17-19463S: Analysis of the relations between the microstructure and macroscopic properties of ultra-high performance concretes</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Cement and Concrete Composites
ISSN
0958-9465
e-ISSN
1873-393X
Volume of the periodical
103
Issue of the periodical within the volume
October
Country of publishing house
GB - UNITED KINGDOM
Number of pages
11
Pages from-to
252-262
UT code for WoS article
000487173300024
EID of the result in the Scopus database
2-s2.0-85065883305