The Mixed-Mode Fracture Resistance of C 50/60 and its Suitability for Use in Precast Elements as Determined by the Brazilian Disc Test and Three-Point Bending Specimens

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F18%3APU128609" target="_blank" >RIV/00216305:26110/18:PU128609 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081723:_____/18:00495681 RIV/61989100:27120/18:10240808

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0167844218301356?via%3Dihub#" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0167844218301356?via%3Dihub#</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tafmec.2018.08.003" target="_blank" >10.1016/j.tafmec.2018.08.003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Mixed-Mode Fracture Resistance of C 50/60 and its Suitability for Use in Precast Elements as Determined by the Brazilian Disc Test and Three-Point Bending Specimens

Popis výsledku v původním jazyce

The mixed mode fracture behaviour of C 50/60 concrete was studied both experimentally and theoretically using two different test configurations (three-point bending and Brazilian disc tests with various crack lengths). Different fracture behaviour in mode I was observed for the tested specimens. The level of crack tip constraint in the test-specimens (which relates to the stress intensity factors (SIF or K) and the T-stress) was used as the main parameter for predicting the mixed mode fracture results based on a two parameter (K-T) linear elastic fracture theory. To predict the crack initiation angles and fracture resistances, the generalized maximum tangential stress (GMTS) criterion was employed. The GMTS simultaneously involves the effects of the mixed mode SIFs, the T-stress and a critical distance rC. For each test configuration, a fracture initiation direction, a fracture toughness and mixed mode fracture resistance curves were obtained throughout the entire range of the mixed mode I/II loading conditions. It was observed that for all specimens the loss of the crack tip constraint increases the mixed mode fracture resistance and decreases the fracture initiation direction and vice versa.

Název v anglickém jazyce

The Mixed-Mode Fracture Resistance of C 50/60 and its Suitability for Use in Precast Elements as Determined by the Brazilian Disc Test and Three-Point Bending Specimens

Popis výsledku anglicky

The mixed mode fracture behaviour of C 50/60 concrete was studied both experimentally and theoretically using two different test configurations (three-point bending and Brazilian disc tests with various crack lengths). Different fracture behaviour in mode I was observed for the tested specimens. The level of crack tip constraint in the test-specimens (which relates to the stress intensity factors (SIF or K) and the T-stress) was used as the main parameter for predicting the mixed mode fracture results based on a two parameter (K-T) linear elastic fracture theory. To predict the crack initiation angles and fracture resistances, the generalized maximum tangential stress (GMTS) criterion was employed. The GMTS simultaneously involves the effects of the mixed mode SIFs, the T-stress and a critical distance rC. For each test configuration, a fracture initiation direction, a fracture toughness and mixed mode fracture resistance curves were obtained throughout the entire range of the mixed mode I/II loading conditions. It was observed that for all specimens the loss of the crack tip constraint increases the mixed mode fracture resistance and decreases the fracture initiation direction and vice versa.

Druh

J_imp - Článek v periodiku v databázi Web of Science

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 periodika

Theoretical and Applied Fracture Mechanics

ISSN

0167-8442

e-ISSN

1872-7638

Svazek periodika

2018

Číslo periodika v rámci svazku

97

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

108-119

Kód UT WoS článku

000447110000010

EID výsledku v databázi Scopus

2-s2.0-85051370998