20.500.12556/DiRROS-18385 Waste rubber incorporated in the alkali-activated metakaolin’s aluminosilicate network enhanced by microwave irradiation Building materials represent the possibility of prolonging the life of waste materials. The key is to ensure that the products are suitable for their function. So we activated metakaolin with the alkaline Na-silicate solution in the ratio that ensures the prevention of efflorescence and high mechanical strength (Horvat and Ducman, 2019). As the waste material (to be incorporated in the aluminosilicate network (ASN) of the alkali-activated metakaolin) ground waste rubber from electric cables was used in the preselected mass ratios. Its inclusion in products, like paving stones, can reduce stiffness, improve durability, dampen vibrations, and reduce road noise. The mechanical strengths of test samples with rubber present on the active surface or slightly below were higher compared to samples where rubber was encapsulated throughout the volume. Compressive strength was higher when samples were irradiated with low powers of microwaves while irradiation with higher powers led to the foaming of alkali-activated slurry. The encapsulation quality of the ground rubber was evaluated by SEM while the chemical influence on ASN was determined by EDS, FTIR, and XRD. Slipperiness change on the active surface of pavement stones proved that the addition of the ground rubber enhanced the walking safety of the product. secondary raw material alkali activated material waste rubber metakaolin encapsulation of organic in inorganic material microwave irradiation mechanical strength sekundarne surovine alkalijsko aktivirani materiali odpadna guma metakaolin vgradnja organskih snovi v anorganskih mikrovalovno obsevanje tlačna trdnost true false true University of Maribor, University Press, Faculty of Chemistry and Chemical Engineering Angleški jezik Slovenski jezik © University of Maribor, University Press Text / besedilo © Authors & Potrč, Bogataj, Kravanja, Novak Pintarič, 2024 Neznano 2024-03-12 08:07:53 2024-03-12 08:12:44 2024-03-13 03:36:26 0000-00-00 00:00:00 2024 0 0 Nasl. z nasl. zaslona; Opis vira z dne 11. 3. 2024; Str. [19]-51 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2024-02-26 620.1/.2 10.18690/um.fkkt.1.2024.5 188459523 186707203 https://doi.org/10.18690/um.fkkt.1.2024 1 40d86f0b-e03f-11ee-9dd4-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=25021 RAZ_Horvat_Barbara_2024.pdf RAZ_Horvat_Barbara_2024.pdf 1 18ED8F349B590FA35F0278137BBECFCC 3e8b44cc093065ebfec85ee2c53a45c37bb122cbf3a6172be9f2b7b5a31b4ce1 e59381a4-e03f-11ee-9dd4-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=25022 Zavod za gradbeništvo Slovenije 0 0 0