Optical detection of mechanical changes in concrete exposed to high temperatures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F18%3APU127840" target="_blank" >RIV/00216305:26110/18:PU127840 - 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

Optical detection of mechanical changes in concrete exposed to high temperatures

Popis výsledku v původním jazyce

Experimental concrete panels of 2300 × 1300 × 150 mm in size were (after an appropriate ageing time) loaded by high temperatures. These panels were heated according to the standard temperature-time curve (ISO 834) stated in EN 1991-1-2 up to the maximum nominal temperature 550, 600, 800 and 1000 °C in a furnace intended for fire tests of building materials. One of the panels was a reference specimen which did not undergo temperature loading. Test specimens were obtained from the panels after the performance of the fire tests. These specimens were provided with a central notch and subsequently tested in three-point bending fracture tests. Parts of the tested specimens were then cut, polished and scanned, and the obtained images were used for the optical detection of mechanical changes in the concrete that occurred due to its exposure to high temperatures. A special filtration procedure was introduced which enabled the quantification of the average brightness change of a black pattern cross-section area

Název v anglickém jazyce

Optical detection of mechanical changes in concrete exposed to high temperatures

Popis výsledku anglicky

Experimental concrete panels of 2300 × 1300 × 150 mm in size were (after an appropriate ageing time) loaded by high temperatures. These panels were heated according to the standard temperature-time curve (ISO 834) stated in EN 1991-1-2 up to the maximum nominal temperature 550, 600, 800 and 1000 °C in a furnace intended for fire tests of building materials. One of the panels was a reference specimen which did not undergo temperature loading. Test specimens were obtained from the panels after the performance of the fire tests. These specimens were provided with a central notch and subsequently tested in three-point bending fracture tests. Parts of the tested specimens were then cut, polished and scanned, and the obtained images were used for the optical detection of mechanical changes in the concrete that occurred due to its exposure to high temperatures. A special filtration procedure was introduced which enabled the quantification of the average brightness change of a black pattern cross-section area

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA16-18702S" target="_blank" >GA16-18702S: Problematika porušování v blízkosti rozhraní plniva a matrice kompozitů na silikátové bázi (AMIRI)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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