20.500.12556/DKUM-82714 Luminiscenčni superhidrofobni beton z dodatkom mikrosilike in metakaolina diplomsko delo Luminescent superhydrophobic concrete with added silica fume and metakaolin V zaključnem delu smo raziskovali vpliv mikrosilike in metakaolina na lastnosti visokozmogljivega in večnamenskega betona. Z namenom izboljšanja upogibne trdnosti smo betonom dodali še mešanico polivinil alkoholnih (PVA) in polipropilenskisih (PP) vlaken. Visokozmogljivemu betonu smo dodali tudi luminiscenčni prah, saj smo želeli še preučiti njegovo sposobnost emitiranja svetlobe v temi. Površine betonskih vzorcev smo modificirali s hidrofobnimi dodatki in nanodelci. Uspešno smo pripravili visokozmogljive betone, ki imajo superhidrofobne površine in sposobnost emitiranja svetlobe v temi. Tlačno trdnost betonov z dodatki mikrosilike in metakaolina, smo izboljšali za 79,57 % in za 89,19 %. Ugotovili smo, da dodatek metakaolina v primerjavi z dodatkom mikrosilike bolj ugodno vpliva na intenziteto in čas emitacije svetlobe. Z modifikacijo betonske površine smo dosegli kontaktne kote vodnih kapljic večje od 150°. Pripravljeni betoni imajo velik potencial v gradbeni praksi pri konstrukcijah z daljšimi razponi, ki so pogosto izpostavljeni koroziji, kloru in sulfidom. Nadalje se ti betoni lahko uporabijo tudi za osvetljevanje ali kot signalizacija, kjer je otežena izvedba umetne osvetlitve. In this research we analyzed the effect on the properties of high-performance concrete by adding silica fume and metakaolin. Hybrid polyvinyl alcohol (PVA) and polypropylene (PP) fibers were also added to these improved concrete mixes which further enhanced the flexural strength. In order to test light emitting abilities of our high-performance concrete we added luminescent pigment. The surface of our samples was modified with hydrophobic additives and nanoparticles. High performance concrete with superhydrophobic surfaces and light emitting abilities was successfully prepared. The concrete mix containing silica fume or metakaolin had up to 79,57 % and 89,19 % higher compressive strength. Adding metakaolin had a better effect on light intensity and emission compared to silica fume. After modifying concrete surfaces, we achieved contact angles of water droplets greater than 150°. All of the prepared concrete mixes could have great potential in construction especially when dealing with corrosion, sulfides and chlorides. Furthermore, these mixes could also be used for illumination and signalization where it is difficult to use artificial lighting. beton mikrosilika metakaolin luminiscenčni beton hibridna vlakna superhidrofobni beton concrete silica fume metakaolin luminescent concrete hybrid fibers superhydrophobic concrete true true false [N. Škrilec] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2022-08-30 16:52:33 2022-09-19 17:28:31 2023-01-05 03:06:53 0000-00-00 00:00:00 2022 0 Maribor 0 Maribor 1 spletni vir (1 datoteka PDF (IX, 36 f.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 666.972.16.017(043.2) 136061443 UN_Skrilec_Nikolina_2022.pdf UN_Skrilec_Nikolina_2022.pdf 1 F11E9728DB4BFDD0FB3749791978D41D 2a1494ab5f56bb20115160b8aa89f621419f2f008a9ef426656aa32e9cf9706f 137d58ac-3827-11ed-9353-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=162952 Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo 0 0 0