Optimal propotions of wedge splitting test specimen for testing of various cement based composites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F11%3APU96582" target="_blank" >RIV/00216305:26110/11:PU96582 - 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

Optimal propotions of wedge splitting test specimen for testing of various cement based composites

Popis výsledku v původním jazyce

Classical fracture tests (bending, tensile) as well as the wedge splitting test (WST) can be employed for the determination of the fracture-mechanical parameters of quasi-brittle cement-based building materials. In this paper, the focus of attention is the WST. The influence of the material brittleness (defined by the characteristic length of the material) is numerically investigated in the paper, as is the influence of the relative notch depth on the results obtained from the WST. The aim of the studyis to minimize the negative effects occurring during experimental activities, particularly the material damage (and therefore also energy dissipation) taking place outside the desired portion of the specimen ? the ligament ? especially around the groovecorner(s). The analysis has been conducted using cohesive crack modelling tools and, in contrast, linear elastic fracture mechanics and the fracture mechanics of generalized stress concentrators. Two FEM systems have been used for numeric

Název v anglickém jazyce

Optimal propotions of wedge splitting test specimen for testing of various cement based composites

Popis výsledku anglicky

Classical fracture tests (bending, tensile) as well as the wedge splitting test (WST) can be employed for the determination of the fracture-mechanical parameters of quasi-brittle cement-based building materials. In this paper, the focus of attention is the WST. The influence of the material brittleness (defined by the characteristic length of the material) is numerically investigated in the paper, as is the influence of the relative notch depth on the results obtained from the WST. The aim of the studyis to minimize the negative effects occurring during experimental activities, particularly the material damage (and therefore also energy dissipation) taking place outside the desired portion of the specimen ? the ligament ? especially around the groovecorner(s). The analysis has been conducted using cohesive crack modelling tools and, in contrast, linear elastic fracture mechanics and the fracture mechanics of generalized stress concentrators. Two FEM systems have been used for numeric

Druh

O - Ostatní výsledky

CEP obor

JM - Inženýrské stavitelství

OECD FORD obor

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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

2011

Kód důvěrnosti údajů

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