20.500.12556/DiRROS-17380 Microwave irradiation of alkali - activated metakaolin slurry The building and civil engineering industry generates more than 40% of man-caused carbon emissions, consumes a lot of energy just to produce building materials, generates a large amount of waste through construction and demolition, and consumes a large amount of natural resources. One of the possible solutions is to use alkali-activated materials, which can use waste instead of raw materials and are produced at lower temperatures, with less energy consumption and in less time than traditional building products. All of this lowers the carbon footprint, which could be further reduced by the timely-short implementation of microwave irradiation in the early stages of alkali-activation synthesis. Therefore, metakaolin activated with Na-water glass in a theoretically optimal ratio was irradiated with microwaves of 2.45 GHz at powers of 100 W and 1000 W for 1 min, and compared to non-irradiated reference cured only at room conditions. Samples prepared at higher power, i.e., 1000 W, solidified completely and foamed. TG-DTA was performed on all samples in the early stages of curing, mechanical strengths were measured on 3 and 28-day- old samples, and leaching tests on aged samples. metakaolin alkali activated material alkali activated foams microwave irradiation metakaolin alkalijsko aktivirani materiali alkalijsko aktivirane pene mikrovalovno obsevanje true false true University of Maribor, University Press, Faculty of Chemistry and Chemical Engineering Angleški jezik Slovenski jezik © Authors & Potrč, Bogataj, Kravanja, Novak Pintarič, 2023 Neznano 2023-11-28 14:58:11 2023-11-28 15:05:56 2023-11-29 03:38:02 0000-00-00 00:00:00 2023 0 0 Nasl. z nasl. zaslona; Opis vira z dne 2. 2. 2023; Str. 9-24 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2023-01-30 620.1/.2 140428291 139091459 https://doi.org/10.18690/um.fkkt.1.2023 1 c98d5e13-8ded-11ee-9ccb-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23603 RAZ_Horvat_Barbara_2023.pdf RAZ_Horvat_Barbara_2023.pdf 1 644957C132486FB2E481F2DE03738AFB ece4a7845bf3d8a4dae862f606ed228c299594b4383c6967b0e956d1cffdd4fd 9902023a-8dee-11ee-9ccb-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23604 Zavod za gradbeništvo Slovenije 0 0 0