Methodology of Analysis of Fibre Sedimentation in HPC mixtures

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F23%3A00372401" target="_blank" >RIV/68407700:21220/23:00372401 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21610/23:00372401
Result on the web
<a href="https://doi.org/10.21062/mft.2023.106" target="_blank" >https://doi.org/10.21062/mft.2023.106</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.21062/mft.2023.106" target="_blank" >10.21062/mft.2023.106</a>

Result language
angličtina
Original language name
Methodology of Analysis of Fibre Sedimentation in HPC mixtures
Original language description
The aim of this work is to propose a methodology for evaluating inhomogeneity due to the sedimentation of fibres in High-Performnce Concrete (HPC) mixtures. HPC mixtures makes better mechanical-physical properties than ordinary concrete. To achieve higher strengths, the fine-grained matrix is reinforced with the reinforcement - fibres. The type of used fibres and their homogenization in mixture has an influence on the final mechanical properties of HPC mixture. Four concrete mixtures with same component proportion was chosen for experiments. Water was the only one component, that was changing in mixture recipes. Steel fibres with a ratio of the diameter to length = 0.3/20 were used as reinforcement. The fibre volume in mixture was 1.5 %. The microscopy analysis was used for evaluation of the fibre distribution in the test specimens. It was obtained, that the concentration of the fibres increases with distance from the surface to the bottom of the HPC structure and this non-homogeneity increases with higher water dosage. The dependence of sedimentation of fibres on composition of HPC mixtures can be used for evaluation and optimization of final mechanical properties of the HPC structures.
Czech name
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Czech description
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Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
20101 - Civil 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
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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