Experimental Procedure for Determination of the Energy Dissipation Capacity of UHPFRC under Localized Impact Loading

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00322577" target="_blank" >RIV/68407700:21110/18:00322577 - isvavai.cz</a>

Výsledek na webu

<a href="http://icps5.put.edu.pl/sites/default/files/ICPS5-Final.pdf" target="_blank" >http://icps5.put.edu.pl/sites/default/files/ICPS5-Final.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Experimental Procedure for Determination of the Energy Dissipation Capacity of UHPFRC under Localized Impact Loading

Popis výsledku v původním jazyce

Mechanical properties of concrete may change when the load is applied at various strain rates. The efficient design of concrete structural elements that are subjected to these loads must be carried out with the full knowledge of its material properties. A very important characteristic of ultra-high performance fibre-reinforced concrete (UHPFRC) is its ability to absorb and dissipate mechanical energy due to its enhanced ductility and strength, which comes mainly from the discrete fibre reinforcement. Improved mechanical properties are very beneficial when dealing with high strain-rate loads, such as projectile impacts, car impacts, earthquakes or blasts. Under quasi-static loading, a simple calculation of the area under the load-displacement (L-D) curves yields the dissipated mechanical energy. Obtaining the L-D diagrams during the higher strain rate loading may be difficult due to various disturbing effects such as sample and measuring apparatus oscillations, placement of contact sensors and most importantly inertial forces of objects in motion, which may adversely affect the results. The outlined testing procedure aims to address these issues by providing a suitable method for estimating the energy dissipation capacity in the case of UHPFRC. The new procedure shows a reasonable approach for testing and evaluating fibre-reinforced concrete under impact loading, although some technical difficulties related to the testing procedure emerged and need to be addressed in future research.

Název v anglickém jazyce

Experimental Procedure for Determination of the Energy Dissipation Capacity of UHPFRC under Localized Impact Loading

Popis výsledku anglicky

Mechanical properties of concrete may change when the load is applied at various strain rates. The efficient design of concrete structural elements that are subjected to these loads must be carried out with the full knowledge of its material properties. A very important characteristic of ultra-high performance fibre-reinforced concrete (UHPFRC) is its ability to absorb and dissipate mechanical energy due to its enhanced ductility and strength, which comes mainly from the discrete fibre reinforcement. Improved mechanical properties are very beneficial when dealing with high strain-rate loads, such as projectile impacts, car impacts, earthquakes or blasts. Under quasi-static loading, a simple calculation of the area under the load-displacement (L-D) curves yields the dissipated mechanical energy. Obtaining the L-D diagrams during the higher strain rate loading may be difficult due to various disturbing effects such as sample and measuring apparatus oscillations, placement of contact sensors and most importantly inertial forces of objects in motion, which may adversely affect the results. The outlined testing procedure aims to address these issues by providing a suitable method for estimating the energy dissipation capacity in the case of UHPFRC. The new procedure shows a reasonable approach for testing and evaluating fibre-reinforced concrete under impact loading, although some technical difficulties related to the testing procedure emerged and need to be addressed in future research.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/VI20172020061" target="_blank" >VI20172020061: Výzkum, vývoj, testování a hodnocení prvků kritické infrastruktury</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Design, Experiment and Analysis of Protective Structures - Proceedings of the 5th International Conference on Protective Structures

ISBN

978-83-89333-71-1

ISSN

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e-ISSN

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Počet stran výsledku

12

Strana od-do

322-333

Název nakladatele

Poznan University of Technology

Místo vydání

Poznaň

Místo konání akce

Poznan

Datum konání akce

19. 8. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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