Determining the porosity of nanoparticle-modified cementitious materials using electrochemical impedance spectroscopy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F25%3A00384741" target="_blank" >RIV/68407700:21110/25:00384741 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22310/25:43933665
Result on the web
<a href="https://doi.org/10.1007/s10853-025-11225-6" target="_blank" >https://doi.org/10.1007/s10853-025-11225-6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10853-025-11225-6" target="_blank" >10.1007/s10853-025-11225-6</a>
Alternative languages
Result language
angličtina
Original language name
Determining the porosity of nanoparticle-modified cementitious materials using electrochemical impedance spectroscopy
Original language description
This paper explores the use of electrochemical impedance spectroscopy (EIS) to measure the porosity of ordinary cement pastes, nanoparticle-modified pastes, and mortars. With proper calibration, EIS effectively monitors changes in microstructure and porosity through Nyquist spectrum analysis. Because EIS is easy to use, relatively accurate, non-destructive, and fast, it has proven to be a suitable tool for testing and comparing large sets of samples. In this study, we tested various equivalent circuit models that showed consistent conductive path measurements but used different nomenclatures. Archie’s law accurately predicted porosity when its index was calibrated using a time-dependent logarithmic function. The general effective media (GEM) model also fit EIS resistance data but required multiple calibrations during hydration. Significant porosity changes were observed in both ordinary and nanoparticle-modified samples over 12 months. Nano-SiO2 increased electrical resistance by 65% and decreased porosity by 3.1% in 1-month-old samples. Mortar samples containing aggregates had up to 82% higher resistance and similar porosity trends compared to pastes. In contrast, nano-Al2O3 reduced electrical resistance by 5%, increasing porosity by 1.8%, indicating potential durability concerns.
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/GA23-05435S" target="_blank" >GA23-05435S: Nanomechanical performance of cementitious composites under radiation impact and variable environmental actions</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Materials Science
ISSN
0022-2461
e-ISSN
1573-4803
Volume of the periodical
60
Issue of the periodical within the volume
32
Country of publishing house
US - UNITED STATES
Number of pages
23
Pages from-to
13867-13889
UT code for WoS article
001548277300001
EID of the result in the Scopus database
2-s2.0-105013176028