Equivalent thermal diffusivity of natural and recycled aggregate concrete at temperature up to 350 ⁰C
Authors:
- Izabela Hager,
- Katarzyna Mróz,
- Tomasz Tracz,
- Václav Kočí,
- Lukáš Fiala
Abstract
The paper presents the evolution of equivalent thermal diffusivity with temperature of concretes with natural coarse aggregates and recycled concrete aggregates. Thermal diffusivity was evaluated based on the temperature measurements made on cylindrical samples using so-called "inverse technique". Thermal diffusivity parameter was estimated for concretes manufactured with different replacement ratios of natural by recycled coarse aggregate (0, 50 and 100%) produced by crushing the worn-out concrete pavement that was dismounted after the exploitation period. The diffusivity of concrete was tested up to 350 ◦C. The progressive decrease of thermal diffusivity was observed, and the lowest D values were obtained for higher recycled concrete aggregates content. The results were presented against the background of other authors results and referred to the D values proposed in EUROCODE 2.
- Record ID
- CUT9bb1f17570d04c87858a37941a73b4aa
- Publication categories
- ; ;
- Author
- Pages
- 207-211
- Other elements of collation
- rys.; tab.; wykr.; Bibliografia (na s.) - 211; Bibliografia (liczba pozycji) - 12; Oznaczenie streszczenia - Abstr.
- Book
- Sojková Kateřina, Kateřina Sojková Hájek Petr, Petr Hájek Fiala Ctislav Ctislav Fiala (eds.): fib International Conference on Concrete Sustainability, Acta Polytechnica CTU Proceedings, no. 33, 2022, Prague, Czech Technical University in Prague, ISBN 978-80-01-06964-6
- Keywords in English
- fire, recycled concrete aggregates, temperature, thermal diffusion
- DOI
- DOI:10.14311/APP.2022.33.0207 Opening in a new tab
- URL
- https://ojs.cvut.cz/ojs/index.php/APP/article/view/7999 Opening in a new tab
- Related project
- E-mobilność oraz zrównoważone materiały i technologie. . Project leader at PK: , ,
- Language
- eng (en) English
- License
- Score (nominal)
- 5
- Score source
- publisherList
- Score
- Publication indicators
- = 0
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT9bb1f17570d04c87858a37941a73b4aa/
- URN
urn:pkr-prod:CUT9bb1f17570d04c87858a37941a73b4aa
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