Microcrack and porosity development in sealed cement mortars measured with micro-computed tomography
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F24%3A00587487" target="_blank" >RIV/68378297:_____/24:00587487 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21110/24:00375899
Result on the web
<a href="https://doi.org/10.3390/ma17133239" target="_blank" >https://doi.org/10.3390/ma17133239</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/ma17133239" target="_blank" >10.3390/ma17133239</a>
Alternative languages
Result language
angličtina
Original language name
Microcrack and porosity development in sealed cement mortars measured with micro-computed tomography
Original language description
For the first time, this paper explores the role of hydration kinetics on microcrack development in cement mortars using the μ-CT technique with a resolution of 2.2 μm. Three binders were tested: fine-grained ordinary Portland cement (OPC) with Blaine fineness of 391 m2/kg, coarsegrained OPC made from the same clinker with Blaine fineness of 273 m2/kg, and H-cement as a representative of the alkali-activated binder. It was found that most microcracks have a width in thenrange of 5–10 μm, increasing their occurrence with the progress of sealed hydration. While H-cement and coarse-grained OPC showed a comparable number of microcracks, fine-grained OPC exhibited more than twice the number of microcracks. In this sense, high hydration kinetics induce more microcracks, promoting later coalescence into visible cracks and disintegration of concrete at the end. Therefore, durable concrete with minimum microcracks should be derived from slow hydration kinetics or alkali-activation processes.
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
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/GA21-03118S" target="_blank" >GA21-03118S: Thermo-hygro-mechanical model of concrete pavements</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials
ISSN
1996-1944
e-ISSN
1996-1944
Volume of the periodical
17
Issue of the periodical within the volume
13
Country of publishing house
CH - SWITZERLAND
Number of pages
14
Pages from-to
3239
UT code for WoS article
001269220400001
EID of the result in the Scopus database
2-s2.0-85198392937