Mechanical fracture parameters of concrete exposed to high temperatures related to approximation of temperature fields in experimental panels

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU133535" target="_blank" >RIV/00216305:26110/19:PU133535 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Mechanical fracture parameters of concrete exposed to high temperatures related to approximation of temperature fields in experimental panels

Original language description

Experimental concrete panels (2300 × 1300 × 150 mm) were exposed to high temperatures using the fire test furnace according to the standard temperature-time curve (ISO 834). The panels were heated to a maximal nominal temperature of 550, 600, 800 or 1000 °C, and then this temperature was maintained for 60 minutes. When the heating processes were complete, the panels were left to cool down to the ambient temperature. After that, specimens (100 × 100 × 400 mm) were cut from the panels, provided with an initial central edge notch and tested in a three-point bending test configuration. The basic mechanical fracture parameters were determined using the Effective Crack Model and the Work-of-Fracture method. To obtain more correct relations between temperature and elastic modulus, fracture toughness and fracture energy, it was necessary to employ approximation functions in the estimation of concrete temperature. Time dependent functions of temperature at different depths within the panel were obtained via the nonlinear approximation of the temperatures measured by temperature sensors. The values recorded for the mechanical fracture parameters of the tested concrete specimens were related to the fire load temperatures in the fracture process zone, which were obtained by approximation functions

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/GA16-18702S" target="_blank" >GA16-18702S: AMIRI − Aggregate-Matrix-Interface Related Issues in silicate-based composites</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

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

Article name in the collection

Proceedings for the 2018 fib Congress held in Melbourne, Australia

ISBN

978-1-877040-15-3

ISSN

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e-ISSN

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Number of pages

11

Pages from-to

3399-3409

Publisher name

Fédération internationale du béton (fib)

Place of publication

Switzerland

Event location

Melbourne

Event date

Oct 7, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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