20.500.12556/RUL-139844 Vpliv steklenih vlaken na krčenje betonov visoke trdnosti diplomska naloga št.: 418/B-GR Effect of glass fibres on the shrinkage of high-strength concrete graduation thesis no.:418/B-GR Betoni visoke trdnosti imajo v primerjavi z običajnimi betoni nižje vodocementno razmerje, zaradi katerega so bolj podvrženi samoizsuševanju, kar povzroča avtogeno krčenje in pojav razpok. Nižje vodocementno razmerje betonu zagotavlja višjo tlačno trdnost. V diplomski nalogi sem obravnavala betone visoke trdnosti z dodanimi steklenimi vlakni. Preučevala sem vpliv steklenih vlaken na časovni razvoj avtogenega krčenja betona visoke trdnosti. V betonsko mešanico sem vmešala steklena vlakna, dolžine 12 mm. Eksperimentalno delo sem izvajala v laboratoriju Fakultete za gradbeništvo in geodezijo. Rezultate meritev avtogenega krčenja in tlačne trdnosti betonov sem primerjala s primerljivim betonom brez vlaken. Po analiziranju rezultatov meritev sem ugotovila, da steklena vlakna zmanjšajo avtogeno krčenje in povečajo tlačno trdnost betona visoke trdnosti. High-strength concretes have a lower water-cement ratio than conventional concretes, which makes them more prone to self-desiccation, resulting in autogenous shrinkage and cracking. The lower watercement ratio gives the concrete a higher compressive strength. In my diploma thesis, I studied high-strength concretes with glass fibres addition. I investigated the effect of glass fibres on the time develpment of autogenous shrinkage in high-strength concrete. I mixed 12 mm glass fibres into the concrete mix. The experimental work was carried out in the laboratory of the Faculty of Civil and Geodetic Engineering. The results of the measurements of autogenous shrinkage and compressive strength were compared with a comparable concrete without fibres. After analysing the measurement results, I found out that glass fibres reduce the autogenous shrinkage and increase the compressive strength of high-strength concrete. gradbeništvo diplomske naloge UNI GR B-GR beton visoke trdnosti vlaknasti beton avtogeno krčenje steklena vlakna graduation thesis civil engineering high-strength concrete fibre reinforced concrete autogenous shrinkage numerical methodsautogenous shrinkage glass fibres true false false [M. Pavlič] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2022-09-08 07:45:25 2022-09-08 07:45:29 2025-08-08 13:21:23 0000-00-00 00:00:00 2022 0 Ljubljana 2022 Ljubljana X, 46 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 691.32(043.2) 150541 124269571 8459.pdf 8459.pdf 1 D24D9C738D26B114905E64A8C1AE58F2 5ba904de0e2226e905bc6fa88d27fe8e0a7078aa7fcceae16713d7cb9a4c8fa0 64cec124-2f39-11ed-92af-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=160479 Fakulteta za gradbeništvo in geodezijo 0 0 0