Influence of Built-in Thermocouples on Temperature Field in Cement Composites Exposed to High Temperatures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F20%3A00342888" target="_blank" >RIV/68407700:21110/20:00342888 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1063/5.0026358" target="_blank" >https://doi.org/10.1063/5.0026358</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0026358" target="_blank" >10.1063/5.0026358</a>

Result language

angličtina

Original language name

Influence of Built-in Thermocouples on Temperature Field in Cement Composites Exposed to High Temperatures

Original language description

Determination of thermal conductivity of porous building materials at high temperatures is of a great importance of today’s materials engineering as it offers wide opportunities for practical applications. There are several methods to perform this measurement. An inverse analysis of an experimentally obtained temperature field in a one-sided heated sample seems to be the most promising technique as it enables to express the thermal conductivity as a function of temperature. The experimental monitoring of the temperature field is usually conducted by means of inbuilt thermocouples that are composed of various metal wires, depending on the temperature range applied. Anyway, metals in general have several times higher thermal conductivity than porous materials which leads to deformation of temperature field measured. Such a deformation may be then reflected in the following data processing and thus may load the results by systematic errors. This paper quantifies the influence of the thermocouple presence on the temperature field deformation as the first step towards the systematic errors elimination. It was revealed, that depending on the time of heating and thermocouple position, the temperature field deformation may reach up to 55 °C. These results were obtained using a three-dimensional computational modelling of heat transfer, in which the temperature fields of a simple specimen and a specimen with an inbuilt thermocouple were compared.

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

20501 - Materials engineering

Project

<a href="/en/project/GA20-00653S" target="_blank" >GA20-00653S: Physical and chemical processes in low-cement heat resistant composites</a><br>

Continuities

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

Publication year

2020

Confidentiality

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

Article name in the collection

AIP Conference Proceedings 2275

ISBN

978-0-7354-4005-0

ISSN

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e-ISSN

1551-7616

Number of pages

6

Pages from-to

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Publisher name

AIP Publishing, APL, the American Institute of Physics

Place of publication

Melville, NY

Event location

Eger

Event date

Sep 2, 2020

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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