Thermal Diffusivity of Concrete Samples Assessment Using a Solar Simulator

Marcin Bilski; Przemysław Górnaś; Andrzej Pożarycki; Przemysław Skrzypczak; Mieczysław Słowik; Marta Mielczarek; Agnieszka Wróblewska; Łukasz Semkło

doi:10.3390/ma16031268

Scientific Information System of the Poznań University of Technology

PL EN

Main page / Publications / Thermal Diffusivity of Concrete Samples Assessment Using a Solar Simulator

Submit a comment

Article

Download file

Title

Thermal Diffusivity of Concrete Samples Assessment Using a Solar Simulator

Authors

Marcin Bilski (WILiT) ^{[ 1 ][ 2.6 ][ P ]}
Przemysław Górnaś (WILiT) ^{[ 1 ][ 2.6 ][ P ]}
Andrzej Pożarycki (WILiT) ^{[ 1 ][ 2.6 ][ P ]}
Przemysław Skrzypczak (WARiE) ^{[ 2 ][ 2.2 ][ P ]}
Mieczysław Słowik (WILiT) ^{[ 1 ][ 2.6 ][ P ]}
Marta Mielczarek (WILiT) ^{[ 1 ][ 2.6 ][ P ]}
Agnieszka Wróblewska (WIŚiE) ^{[ 3 ][ 2.9 ][ P ]}
Łukasz Semkło (WIŚiE) ^{[ 3 ][ 2.9 ][ P ]}

^{[ 1 ]} Instytut Inżynierii Lądowej, Wydział Inżynierii Lądowej i Transportu, Politechnika Poznańska | ^{[ 2 ]} Instytut Elektrotechniki i Elektroniki Przemysłowej, Wydział Automatyki, Robotyki i Elektrotechniki, Politechnika Poznańska | ^{[ 3 ]} Instytut Energetyki Cieplnej, Wydział Inżynierii Środowiska i Energetyki, Politechnika Poznańska | ^{[ P ]} employee

Scientific discipline (Law 2.0)

[2.2] Automation, electronics and electrical engineering
[2.6] Civil engineering and transport
[2.9] Environmental engineering, mining and energy

Year of publication

2023

Published in

Materials

Journal year: 2023 | Journal volume: vol. 16 | Journal number: iss. 3

Article type

scientific article

Publication language

english

Keywords

EN

oam concrete
cement concrete
inverse problem
back-calculation
thermal properties
solar simulator
thermal diffusivity

Abstract

EN The thermal properties of pavement layers made of concrete with varying bulk densities are a particularly interesting topic in the context of development road technologies. If a hybrid layer system is used as a starting point, with thin asphalt layers (from 1 cm to 4 cm) laid on top of a foam concrete layer, thermal properties begin to play a crucial role. The main research problem was to create a test method enabling the assessment of the influence of solar heating on the thermal parameters of the building material, especially cement concrete. For this reason, this paper is concerned specifically with the assessment of a new methodology for testing and calculating the value of the thermal diffusivity coefficient of samples made of concrete varying bulk densities. In this case, using the proprietary concept the authors built a solar simulator using a multi-source lighting system. The analysis of the results of laboratory tests and numerical analyses allowed the authors to observe that there is a strong correlation between the bulk density of samples heated and the thermal diffusivity parameter, which appears in the unidirectional heat transfer equation. The strength of this relationship has been expressed with the coefficient of determination and amounts to 99%. The calculated values of the coefficient of thermal diffusivity for samples made of foam concrete range from 0.16 x 10^-6 m2/s to 0.52 x 10^-6 m2/s and are lower (from 2.5 to 8 times) than the value determined for samples made of typical cement concrete.

Pages (from - to)

1268-1 - 1268-14

DOI

10.3390/ma16031268

URL

https://www.mdpi.com/1996-1944/16/3/1268

Comments

article number: 1268

License type

CC BY (attribution alone)

Open Access Mode

open journal