Segregation of Steel Fibres of UHPFRC

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21720%2F18%3A00320705" target="_blank" >RIV/68407700:21720/18:00320705 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21110/18:00320705

Výsledek na webu

<a href="https://www.scientific.net/SSP.272.166" target="_blank" >https://www.scientific.net/SSP.272.166</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/SSP.272.166" target="_blank" >10.4028/www.scientific.net/SSP.272.166</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Segregation of Steel Fibres of UHPFRC

Popis výsledku v původním jazyce

The mixture of ultra-high performance concrete is often supplemented by steel fibres which can significantly improve the fracture energy of the concrete. The incorporation of steel fibres results in especially a significant increase of tensile strength and minimize the risk of brittle failure. However, these positive properties can be fully realised only if the fibres are uniformly distributed. Otherwise, that leads to different quality of the concrete and to deterioration of strength characteristics. The subject of this article is the segregation of steel fibres which is one of the frequent problems of poor distribution of fibres. The degree of segregation has been investigated depending on amount of fibre dosage, size of maximum aggregate size and degree of consistency of fresh concrete. Two types of steel fibres with circular cross-section of a diameter of 0.4 mm but with different lengths (12.5 and 25 mm) were used for experiments. The segregation was evaluated by the drop of the fibres on the cutting surface of specimens. The results showed that segregation was the most affected by the consistency of fresh concrete. The amount of fibre dosage as well as the size of maximum aggregate size did not significantly affect segregation.

Název v anglickém jazyce

Segregation of Steel Fibres of UHPFRC

Popis výsledku anglicky

The mixture of ultra-high performance concrete is often supplemented by steel fibres which can significantly improve the fracture energy of the concrete. The incorporation of steel fibres results in especially a significant increase of tensile strength and minimize the risk of brittle failure. However, these positive properties can be fully realised only if the fibres are uniformly distributed. Otherwise, that leads to different quality of the concrete and to deterioration of strength characteristics. The subject of this article is the segregation of steel fibres which is one of the frequent problems of poor distribution of fibres. The degree of segregation has been investigated depending on amount of fibre dosage, size of maximum aggregate size and degree of consistency of fresh concrete. Two types of steel fibres with circular cross-section of a diameter of 0.4 mm but with different lengths (12.5 and 25 mm) were used for experiments. The segregation was evaluated by the drop of the fibres on the cutting surface of specimens. The results showed that segregation was the most affected by the consistency of fresh concrete. The amount of fibre dosage as well as the size of maximum aggregate size did not significantly affect segregation.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

24th Concrete Days 2017

ISBN

978-3-0357-1284-1

ISSN

1012-0394

e-ISSN

1662-9779

Počet stran výsledku

6

Strana od-do

166-171

Název nakladatele

Trans Tech Publications

Místo vydání

Curich

Místo konání akce

Litomyšl

Datum konání akce

22. 11. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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