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Experimental investigation of temperature distribution in massive concrete using fiber optic sensing technology
ID Humar, Nina (Author), ID Zupan, Dejan (Author), ID Kryžanowski, Andrej (Author), ID Vidmar, Andrej (Author), ID Trtnik, Gregor (Author)

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Abstract
Concrete dams are among the most frequently monitored structures due to their long lifespan and catastrophic consequences associated with failure. Recently, advancements in material science and instrumentation have led to substantial progress in monitoring techniques for evaluating dam integrity. This research focuses on the monitoring of temperature development in massive concrete structures - an important parameter for predicting the mechanical properties of concrete. Conventional monitoring techniques primarily utilize discrete-point sensors, which provide limited spatial resolution and are often insufficient for accurately capturing the complexity of temperature distribution. To overcome these limitations, distributed (linear) temperature sensing using the fiber optic cables, has emerged as an effective alternative, enabling continuous temperature measurement along the length of the sensor. This paper presents the principles of distributed fiber optic sensing for temperature monitoring in massive concrete structures and illustrates its practical implementation during the hydration phase of concrete placement in a real structural block.

Language:English
Keywords:civil engineering, fiber optic, mass concrete, hydration, temperature, dams
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FGG - Faculty of Civil and Geodetic Engineering
Publication status:Published
Publication version:Author Accepted Manuscript
Year:2025
Number of pages:9 str.
Numbering:Vol. 24, art. 100809
PID:20.500.12556/RUL-176278 This link opens in a new window
UDC:626/627
ISSN on article:2666-1659
DOI:10.1016/j.dibe.2025.100809 This link opens in a new window
COBISS.SI-ID:258766595 This link opens in a new window
Publication date in RUL:26.11.2025
Views:493
Downloads:249
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Record is a part of a journal

Title:Developments in the built environment
Publisher:Elsevier
ISSN:2666-1659
COBISS.SI-ID:56246787 This link opens in a new window

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

Language:Slovenian
Title:Meritve temperaturnega polja v masivnem betonu z optičnimi kabli
Abstract:
Betonske pregrade so zaradi svoje dolge življenjske dobe in katastrofalnih posledic, povezanih z njihovim porušitvijo, med najpogosteje nadzorovanimi konstrukcijami. V zadnjem času je razvoj znanosti o materialih in instrumentaciji privedel do znatnega napredka v tehnologijah spremljanja za ocenjevanje stanja pregrad. Predmet raziskave, opisane v članku se osredotoča na spremljanje razvoja temperature v masivnih betonskih konstrukcijah – pomembnem parametru za napovedovanje mehanskih lastnosti betona. Konvencionalne tehnologije spremljanja uporabljajo predvsem točkovne senzorje, ki zagotavljajo omejeno prostorsko ločljivost in pogosto ne zadostujejo za natančno zajemanje kompleksnosti prostorske porazdelitve temperature. Da bi premagali te omejitve, se je kot učinkovita alternativa pojavilo porazdeljeno (linearno) merjenje temperature z uporabo optičnih kablov, ki omogoča neprekinjeno merjenje temperature vzdolž celotnega kabla. V članku so predstavljena temeljna načela porazdeljenega optičnega merjenja temperature v masivnih betonskih konstrukcijah ter prikazana njegova praktična uporaba med hidratacijo betona v dejansko izvedenem konstrukcijskem bloku.

Keywords:gradbeništvo, optična vlakna, masivni beton, hidratacija, temperatura, pregrade

Projects

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:P2-0180-2022
Name:Vodarstvo in geotehnika: orodja in metode za analize in simulacije procesov ter razvoj tehnologij

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:P2-0260-2019
Name:Mehanika konstrukcij

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