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Title:
Eksperimentalna analiza superhidrofobnega betona : diplomsko delo
Authors:
ID
Jazbec, Alen
(Author)
ID
Ivanič, Andrej
(Mentor)
More about this mentor...
ID
Kravanja, Gregor
(Comentor)
Files:
VS_Jazbec_Alen_2021.pdf
(4,40 MB)
MD5: 75D695427DCE1D5FD0DA3BC5DF29F1D3
PID:
20.500.12556/dkum/501515e5-aac4-49d2-bb37-34d7fbde9c8f
Language:
Slovenian
Work type:
Bachelor thesis/paper
Typology:
2.11 - Undergraduate Thesis
Organization:
FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
Abstract:
Zaključno delo zajema eksperimentalno analizo superhidrofobnega betona. Superhidrofobni materiali imajo kontaktne kote, večje od 150°, njihove površine so samočistilne, so korozijsko odporni in imajo visoko odpornost proti zmrzovanju. Kontaktne kote smo izmerili s pomočjo kapljične tenziometrije ob uporabi računalniških algoritmov. Upogibno in tlačno trdnost smo izmerili s pomočjo univerzalne testne naprave za preizkušanje materialov Zwick Roell Z010. Morfologijo superhidrofobne površine smo preučili s pomočjo mikroskopa SEM-SEI (Scanning Electron Microscopy – Secondary Electron Imaging). Z namenom ugotoviti trajnost armiranega superhidrofobnega betona, smo izvedli elektrokemijske meritve pospešene korozije s potenciostatom. V komori za zmrzovanje/tajanje smo preskusili odpornost pripravljenega superhidrofobnega betona proti zmrzovanju/tajanju. Uspešno smo pripravili superhidrofobni beton z mikro in nano narebreno površino, ki je imel visoko vodoodbojnost s kontaktnimi koti vse do 157,6°. Zaradi uporabe kemijskih dodatkov so se tlačne in upogibne lastnosti nekoliko zmanjšale, medtem ko se je odpornost površine vzorcev proti zmrzovanju/tajanju bistveno izboljšala. Elektrokemijski testi na armiranem superhidrofobnem betonu nakazujejo bistveno izboljšano korozijsko odpornost. Pripravljeni superhidrofobni betoni z izboljšanimi lastnostmi imajo velik potencial v gradbeni praksi.
Keywords:
superhidrofobni beton
,
kontaktni kot
,
tlačni in upogibni test
,
odpornost proti zmrzovanju/tajanju
,
korozija
Place of publishing:
Maribor
Place of performance:
Maribor
Publisher:
[A. Jazbec]
Year of publishing:
2021
Number of pages:
XI, 44 str.
PID:
20.500.12556/DKUM-78662
UDC:
620.17/.19:666.972.52(043.2)
COBISS.SI-ID:
58597891
NUK URN:
URN:SI:UM:DK:OGHNGWXR
Publication date in DKUM:
05.03.2021
Views:
1157
Downloads:
116
Metadata:
Categories:
KTFMB - FG
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:
JAZBEC, Alen, 2021,
Eksperimentalna analiza superhidrofobnega betona : diplomsko delo
[online]. Bachelor’s thesis. Maribor : A. Jazbec. [Accessed 2 April 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=78662
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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.
Licensing start date:
30.01.2021
Secondary language
Language:
English
Title:
Experimental analysis of superhydrophobic concrete
Abstract:
Thesis presents the experimental analysis of superhydrophobic concrete. The contact angles of superhydrophobic materials are greater than 150°, their surfaces are self-cleaning, they are resistant to corrosion and highly resistant to freezing. The contact angles were measured using drop tensiometry and computer algorithms, while the flexural and compressive strength were measured using the universal material testing device Zwick Roell Z010. The morphology of the superhydrophobic surface was studied using a SEM-SEI microscope (Scanning Electron Microscopy – Secondary Electron Imaging). To determine the durability of the reinforced superhydrophobic concrete, we performed electrochemical measurements of accelerated corrosion using a potentiostat. The resistance of the prepared superhydrophobic concrete to freezing/thawing was tested in a freeze/thaw test chamber. We successfully prepared superhydrophobic concrete with micro- and nano- grooves on its surface, highly water-repellent properties and contact angles up to 157.6°. The use of chemical agents reduced its compressive and flexural properties, while improving the resistance of the surface of the specimens to freezing/melting. Electrochemical tests conducted on the reinforced superhydrophobic concrete showed significantly improved resistance to corrosion. The produced superhydrophobic concrete with improved properties has great potential in the construction industry.
Keywords:
superhydrophobic concrete
,
contact angle
,
pressure and bending test
,
resistance against freezing/melting
,
corrosion
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