CFD Analysis of Ultra-High-Performance Concrete Rheological Tests

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F24%3A00372443" target="_blank" >RIV/68407700:21220/24:00372443 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.3390/fluids9020045" target="_blank" >https://doi.org/10.3390/fluids9020045</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/fluids9020045" target="_blank" >10.3390/fluids9020045</a>

Result language

angličtina

Original language name

CFD Analysis of Ultra-High-Performance Concrete Rheological Tests

Original language description

This study connects and compares the results from two different rheological measurement techniques, namely, the slump test and rotational rheometry, on UHPC (Ultra-High-Performance Concrete) through the use of commercially available numerical simulation software ANSYS Fluent 2022 R2. The workability and resulting mechanical properties of the UHPC (a material used in construction) are highly dependent on its rheology and, hence, also on the composition and level of homogeneity of the assessed mixture. It is generally understood that the most suitable rheological model for concrete mixtures is the Hershel–Bulkley model. However, obtaining reliable rheological data is complicated as the wide-gap rotational rheometers developed for concrete show bias in their measurements even on precise laboratory equipment, while common industrial tests, such as the slump test, do not produce the usual shear rate–shear stress relation and, hence, do not allow for more complex analysis. Recently, a new methodology for the rheological measurement of non-Newtonian fluids that utilises a simple power input–rotation speed measurement was published. However, in this study, only model liquids were evaluated, and the method was not validated for more complex fluids such as pastes. Therefore, it was the goal of this study to show this method’s suitability for fine pastes through a comparison with the slump test, using numerical simulation.

Czech name

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Czech description

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Type

J_imp - 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

Project

<a href="/en/project/GA21-24070S" target="_blank" >GA21-24070S: Model of fibre segregation in dependence on rheological properties of fresh HPC</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Fluids (online)

ISSN

2311-5521

e-ISSN

2311-5521

Volume of the periodical

9

Issue of the periodical within the volume

2

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

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UT code for WoS article

001172446700001

EID of the result in the Scopus database

2-s2.0-85185938420