Experimental procedure for determination of the energy dissipation capacity of ultra-high-performance fibre-reinforced concrete under localized impact loading

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00324918" target="_blank" >RIV/68407700:21110/19:00324918 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1177/2041419618819506" target="_blank" >https://doi.org/10.1177/2041419618819506</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1177/2041419618819506" target="_blank" >10.1177/2041419618819506</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental procedure for determination of the energy dissipation capacity of ultra-high-performance fibre-reinforced concrete under localized impact loading

Popis výsledku v původním jazyce

Research presented in this paper is aimed to investigate the ability of UHPFRC to absorb and dissipate mechanical energy at elevated strain rate loading. Specimens made of UHPFRC were subjected to the low-velocity impact by using the new testing procedure where no fixed supports that hold the sample during the impact were applied. The fibre volume fraction of the UHPFRC was set as the main test variable in the framework of this study and the volumetric fraction of fibres was ranging from 0.125% to 2%. A high-speed camera was used to measure velocities of the impactor and the UHPFRC specimen before and after the impact. Consequently, the energy dissipated by the UHPFRC specimen during the impact was calculated using a simple energy balance equation. To determine the basic material properties of UHPFRC, quasi-static loading rate was applied and conventional methods were used. A significant difference between the values of dissipated energies for different loading rates and various fibre volumetric fractions was observed. In can be noted that the new procedure shows a reasonable approach for testing the fibre-reinforced cementitious composites under localized impact loading and is worthy of further optimization.

Název v anglickém jazyce

Experimental procedure for determination of the energy dissipation capacity of ultra-high-performance fibre-reinforced concrete under localized impact loading

Popis výsledku anglicky

Research presented in this paper is aimed to investigate the ability of UHPFRC to absorb and dissipate mechanical energy at elevated strain rate loading. Specimens made of UHPFRC were subjected to the low-velocity impact by using the new testing procedure where no fixed supports that hold the sample during the impact were applied. The fibre volume fraction of the UHPFRC was set as the main test variable in the framework of this study and the volumetric fraction of fibres was ranging from 0.125% to 2%. A high-speed camera was used to measure velocities of the impactor and the UHPFRC specimen before and after the impact. Consequently, the energy dissipated by the UHPFRC specimen during the impact was calculated using a simple energy balance equation. To determine the basic material properties of UHPFRC, quasi-static loading rate was applied and conventional methods were used. A significant difference between the values of dissipated energies for different loading rates and various fibre volumetric fractions was observed. In can be noted that the new procedure shows a reasonable approach for testing the fibre-reinforced cementitious composites under localized impact loading and is worthy of further optimization.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

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

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 periodika

International Journal of Protective Structures

ISSN

2041-4196

e-ISSN

2041-420X

Svazek periodika

10

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

251-265

Kód UT WoS článku

000471123600006

EID výsledku v databázi Scopus

2-s2.0-85062989072