A numerical approach to multiscale simulation of cement paste strength

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F21%3A00546426" target="_blank" >RIV/68378297:_____/21:00546426 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.4028/www.scientific.net/SSP.325.3" target="_blank" >https://doi.org/10.4028/www.scientific.net/SSP.325.3</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/SSP.325.3" target="_blank" >10.4028/www.scientific.net/SSP.325.3</a>

Result language
angličtina
Original language name
A numerical approach to multiscale simulation of cement paste strength
Original language description
Recent experimental investigations on the nanoscale of hardened cement paste revealed that the tensile strengths of the microstructural phases present amount to several hundreds of MPa. Confrontation with macroscopic tensile strength testing, by e.g. Brazilian splitting, shows a decrease over two orders of magnitude. A computational model based on a hierarchical representation of hardened cement paste microstructure is presented in this paper, attempting to shed light on the factors affecting the scaling of strength from the nanoscopic scale up to the macroscopic scale. The model is validated on a case study featuring a Portland-limestone cement paste subjected to an external sulfate attack. Such conditions compromise the nanoscopic integrity of the C-S-H gel as a consequence of the progressive decalcification and affect the overall load-bearing capacity of the macroscopic cement paste specimen.
Czech name
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Czech description
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Project
<a href="/en/project/GJ19-25163Y" target="_blank" >GJ19-25163Y: Spatial distribution of hydration products in cement pastes</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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