20.500.12556/RUL-173169 Primerjava obstoječega in prihajajočega pristopa k projektiranju betona ter njun vpliv na ogljični odtis betona diplomska naloga Comparison of prescriptive and performance-based approaches to concrete design and their impact on the carbon footprint of concrete graduation thesis Gradbeništvo sodi med panoge z najvišjimi izpusti ogljikovega dioksida, pri čemer pomemben delež emisij izvira iz proizvodnje cementa – ključne sestavine betona. Za zmanjšanje ogljičnega odtisa se že več let uvajajo različni ukrepi, med drugim uporaba alternativnih goriv in mineralnih dodatkov, s katerimi se nadomešča del cementnega klinkerja. Študije razogljičenja gradbeništva kažejo, da je dodatni napredek potreben tudi na področju učinkovitejšega projektiranja betonov. Obetavno rešitev ponuja prehod z obstoječega pristopa, ki temelji na stopnjah izpostavljenosti in predpisanih parametrih sestave betona (prescriptive approach), na sodobnejši pristop, ki preverja doseganje zahtevanih lastnosti betona (performance-based approach). V nalogi sta primerjana oba pristopa k projektiranju betona. Po pregledu literature so opisane laboratorijske preiskave, s katerimi je preverjena učinkovitost pristopa performance-based pri doseganju ustreznih reoloških lastnosti svežega betona ter tlačne trdnosti in odpornosti proti karbonizaciji strjenega betona. Izračunan je tudi ogljični odtis preizkušenih sestav. Rezultati pokažejo, da pristop, ki temelji na preverjanju lastnosti betona, zmanjša njegov ogljični odtis za približno 30 % v primerjavi z referenčnim betonom, proizvedenim v betonarni skladno z zahtevami veljavnega standarda, ki temelji na predpisani sestavi. The construction industry is among the sectors with the highest carbon dioxide emissions, with a significant share originating from cement production – the key component of concrete. To reduce its carbon footprint, various measures have been introduced for several years, including the use of alternative fuels and mineral additives that partially replace cement clinker. Decarbonisation studies of the construction sector indicate that further progress is also required in the area of more efficient concrete design. A promising solution lies in the transition from the current approach, which is based on exposure classes and prescribed mix parameters (prescriptive approach), to a more advanced approach that verifies the performance of required concrete properties (performance-based approach). This thesis compares both approaches to concrete design. Following a literature review, laboratory tests are described that evaluate the effectiveness of the performance-based approach in achieving the required rheological properties of fresh concrete, as well as the compressive strength and carbonation resistance of hardened concrete. The carbon footprint of the tested mixes is also calculated. The results show that the performance-based approach reduces the carbon footprint of concrete by approximately 30% compared to a reference concrete produced in a batching plant in accordance with the requirements of the current standard, which is based on prescriptive mix design. diplomske naloge beton projektiranje betona standard EN 206 obstojnost betona karbonatizacija graduation thesis concrete concrete design durability of concrete carbonation true false false [R. Šavli] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-09-13 08:45:31 2025-09-13 08:45:33 2025-11-05 03:42:26 0000-00-00 00:00:00 2025 0 Ljubljana 2025 Ljubljana 1 spletni vir (1 datoteka PDF (VIII, 49 str.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 691.32:666.97:66.046.56(043.2) 174088 249223171 19203.pdf 19203.pdf 1 72CE0B4138B62936B4FB63324DC0600E 6966ef49218c4a8572f181b937b42ece0cb6ef3cf13883a9df5fc78497c5f6a5 14b253f7-906d-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=217340 Fakulteta za gradbeništvo in geodezijo 0 0 0