Experimental-computational determination of mechanical fracture parameters of concrete for probabilistic life-cycle assessment

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Experimental-computational determination of mechanical fracture parameters of concrete for probabilistic life-cycle assessment

Popis výsledku v původním jazyce

The paper presents results of the determination of mechanical fracture parameters for specified concrete types after different hardening periods. The concretes subjected to investigation are used in industry for the production of prefabricated concrete elements. Mechanical fracture parameters were determined with the cooperation of two laboratories (the University of Natural Resources and Life Sciences, Vienna, Austria and Brno University of Technology, Czech Republic) using two different test configurations - wedge splitting and three-point bending. In addition, identification was performed based on artificial neural networks in combination with stochastic analysis using the whole experimentally obtained load-deflection curve. The obtained mechanical fracture parameters can be used to quantify the structural resistance against crack initiation and propagation (or the brittleness and toughness of the structural members). Simultaneously, they can be employed for the simulation of the quasi-brittle random behavior of beams/structures made of cement-based composites, including material uncertainties required for reliability analysis (statistical characteristics of fracture-mechanical parameters, including statistical correlations).

Název v anglickém jazyce

Experimental-computational determination of mechanical fracture parameters of concrete for probabilistic life-cycle assessment

Popis výsledku anglicky

The paper presents results of the determination of mechanical fracture parameters for specified concrete types after different hardening periods. The concretes subjected to investigation are used in industry for the production of prefabricated concrete elements. Mechanical fracture parameters were determined with the cooperation of two laboratories (the University of Natural Resources and Life Sciences, Vienna, Austria and Brno University of Technology, Czech Republic) using two different test configurations - wedge splitting and three-point bending. In addition, identification was performed based on artificial neural networks in combination with stochastic analysis using the whole experimentally obtained load-deflection curve. The obtained mechanical fracture parameters can be used to quantify the structural resistance against crack initiation and propagation (or the brittleness and toughness of the structural members). Simultaneously, they can be employed for the simulation of the quasi-brittle random behavior of beams/structures made of cement-based composites, including material uncertainties required for reliability analysis (statistical characteristics of fracture-mechanical parameters, including statistical correlations).

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20102 - Construction engineering, Municipal and structural 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

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

Life-Cycle of Structural Systems: Design, Assessment, Maintenance and Management

ISBN

978-1-138-00120-6

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

801-807

Název nakladatele

Taylor & Francis Group

Místo vydání

London, UK

Místo konání akce

Tokyo

Datum konání akce

16. 11. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000380508800104