Example of Using Double-K and Double-G Fracture Model Results: Concrete with Polypropylene Fibres.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F16%3APU117645" target="_blank" >RIV/00216305:26110/16:PU117645 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Example of Using Double-K and Double-G Fracture Model Results: Concrete with Polypropylene Fibres.

Popis výsledku v původním jazyce

In this paper, a selected example was introduced of using Double-K fracture model results obtained from fracture test of three-point bended specimens of concrete with heavy-weight aggregates (OB) as well as light-weight aggregates (LB) with polypropylene fibres to calculate Double-G fracture model parameters. It can be concluded: (i) Resistance to initiation of stable crack propagation increased with addition of fibres in both concrete types. (ii) For heavy-weight aggregates concrete, this increase was about 10 to 20 % of relative initiation fracture toughness and 20 to 40 % of relative initiation fracture energy release, concrete with fibre length of 38 mm (OB_FF38) showed the highest increase. (iii) For light-weight aggregates concrete, this increase was about 40 to 90 % of relative initiation fracture toughness and 100 to nearly 300 % of relative initiation fracture energy release; in this case, concrete with fibre length of 54 mm (LB_FF54) showed the highest increase. (iv) Double-G fracture model compared to Double-K fracture model predicts substantially lower resistance to stable crack propagation for both types of concrete; relative resistance to initiation of stable crack propagation (G_IC^ini/G_IC^un to K_IC^ini/K_IC^un ratio) was approximately between 40 and 50 % in heavy-weight aggregates concrete and between 20 to 40 % in light-weight aggregates concrete.

Název v anglickém jazyce

Example of Using Double-K and Double-G Fracture Model Results: Concrete with Polypropylene Fibres.

Popis výsledku anglicky

In this paper, a selected example was introduced of using Double-K fracture model results obtained from fracture test of three-point bended specimens of concrete with heavy-weight aggregates (OB) as well as light-weight aggregates (LB) with polypropylene fibres to calculate Double-G fracture model parameters. It can be concluded: (i) Resistance to initiation of stable crack propagation increased with addition of fibres in both concrete types. (ii) For heavy-weight aggregates concrete, this increase was about 10 to 20 % of relative initiation fracture toughness and 20 to 40 % of relative initiation fracture energy release, concrete with fibre length of 38 mm (OB_FF38) showed the highest increase. (iii) For light-weight aggregates concrete, this increase was about 40 to 90 % of relative initiation fracture toughness and 100 to nearly 300 % of relative initiation fracture energy release; in this case, concrete with fibre length of 54 mm (LB_FF54) showed the highest increase. (iv) Double-G fracture model compared to Double-K fracture model predicts substantially lower resistance to stable crack propagation for both types of concrete; relative resistance to initiation of stable crack propagation (G_IC^ini/G_IC^un to K_IC^ini/K_IC^un ratio) was approximately between 40 and 50 % in heavy-weight aggregates concrete and between 20 to 40 % in light-weight aggregates concrete.

Druh

D - Stať ve sborníku

CEP obor

JN - Stavebnictví

OECD FORD obor

—

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

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

Sborník příspěvků konference Juniorstav 2016

ISBN

978-80-214-5311-1

ISSN

—

e-ISSN

—

Počet stran výsledku

5

Strana od-do

1-5

Název nakladatele

Vysoké učení technické v Brně, Fakulta stavební

Místo vydání

Brno

Místo konání akce

Fakulta stavební, VUT v Brně

Datum konání akce

28. 1. 2016

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

—