Temperature impact on bond between steel and ultra high performance

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F19%3A00337390" target="_blank" >RIV/68407700:21610/19:00337390 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Temperature impact on bond between steel and ultra high performance

Popis výsledku v původním jazyce

Actual paper describes an experimental research in the field of testing bond behaviour of UHPFRC with temperature impact. High temperature (fire, explosion) or low temperature (freezing) has a fatal impact on final materiál properties of the concrete. In application made from ordinary concrete exposed to high temperatures polypropylene fibres are often used in case of spalling reduction or its elimination. UHFRPC (Ultra – High Performance Fibre Reinforced Concrete) is very promising material which is used for design very complex structures and elements, because of high materiál properties and especially high durability and resistance against extreme environment. In this case, a combination of steel fibres (static function) and polypropylene fibres was used for a spalling reduction and elimination, same as in ordinary concrete. Impact of fibre volume to final bond properties was also tested. An extensive research is described in this paper. Large set of results of material properties with connection to final bond behaviour are included. For the tests a normal reinforcement (bars) and prestressing strands were used. UHPC is usually reinforced only by a scattered reinforcement, which replaces ordinary reinforcement. In most application, the UHPFRC is used to increase durability of the structure and reduction of final volume of concrete. There are also many applications where exposition to elevated temperature may occurred (sprayed UHPFRC in tunnel application).Obtained results help to final design of the UHPFRC structure which may be exposed to extreme conditions.

Název v anglickém jazyce

Temperature impact on bond between steel and ultra high performance

Popis výsledku anglicky

Actual paper describes an experimental research in the field of testing bond behaviour of UHPFRC with temperature impact. High temperature (fire, explosion) or low temperature (freezing) has a fatal impact on final materiál properties of the concrete. In application made from ordinary concrete exposed to high temperatures polypropylene fibres are often used in case of spalling reduction or its elimination. UHFRPC (Ultra – High Performance Fibre Reinforced Concrete) is very promising material which is used for design very complex structures and elements, because of high materiál properties and especially high durability and resistance against extreme environment. In this case, a combination of steel fibres (static function) and polypropylene fibres was used for a spalling reduction and elimination, same as in ordinary concrete. Impact of fibre volume to final bond properties was also tested. An extensive research is described in this paper. Large set of results of material properties with connection to final bond behaviour are included. For the tests a normal reinforcement (bars) and prestressing strands were used. UHPC is usually reinforced only by a scattered reinforcement, which replaces ordinary reinforcement. In most application, the UHPFRC is used to increase durability of the structure and reduction of final volume of concrete. There are also many applications where exposition to elevated temperature may occurred (sprayed UHPFRC in tunnel application).Obtained results help to final design of the UHPFRC structure which may be exposed to extreme conditions.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA17-22796S" target="_blank" >GA17-22796S: Experimentální a numerická analýza soudržnosti kovové výztuže s ultra vysokohodnotným betonem (UHPC) za vysokých teplot</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of 177th ISERD International Conference

ISBN

978-93-89469-86-8

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

52-55

Název nakladatele

Institute for Technology and Research

Místo vydání

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Místo konání akce

Dubai

Datum konání akce

1. 12. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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