20.500.12556/DiRROS-17933 Influence of curing / drying methods including microwave heating on alkali activation of waste casting cores Within previous investigation alkali activation of waste casting cores at room temperature did not give promising results, i.e. when the precursor was gently ground and sieved below 600 %m the alkali activated material fell apart at demolding, and when the precursor was ground below 90 %m, the alkali activated material did not solidify in more than 2 years. , Therefore different drying/curing methods were applied to enhance the reaction. Waste casting cores were prepared in two granulations (sieved below 600 %m and below 90 %m), activated with Na -water glass and 10 M NaOH, cured at different temperatures (70 °C and room temperature), and subsequently cured/dried at three different conditions: room temperature, 110 °C, and irradiated with microwaves. The highest compressive strength, 25 MPa, was gained with subsequent curing/drying at 110 °C. The lowest density, 0.5 kg/l, with compressive strength above 3 MPa, was achieved with subsequent curing/drying with microwaves . waste casting cores alkali activation curing drying microwaves mechanical strength true false true Slovenian National Building and Civil Engineering Institute (ZAG) Angleški jezik Ni določen © 2021 Slovenian National Building and Civil Engineering Institute Neznano 2024-01-22 14:36:21 2024-01-22 14:38:27 2024-01-26 03:50:45 0000-00-00 00:00:00 2021 0 0 Nasl. z nasl. zaslona; Opis vira z dne 24. 5. 2021; Str. 48-57 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2021-01-01 621.742.4 64285187 60496131 coms2020-21-proceedings-2.pdf coms2020-21-proceedings-2.pdf Odprti dostop 1 9894BB38311A12D91AA0F5BC762F8F04 dc66fe7e73d90541ca75a2cf1068699e19fff13e036033718368717f7817fb84 3bbc302b-b92b-11ee-b0d4-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=24321 RAZ_Horvat_Barbara_2021.pdf RAZ_Horvat_Barbara_2021.pdf 1 4CAD53A9FB8BC4BA79390E267E4A1120 e4cb8c536422a962cb58e4d2e7c6e349c2fa36ce730cb61630cdffd9ab1fe236 072dcfbe-bb50-11ee-b0d4-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=24355 https://www.zag.si/dl/coms2020-21-proceedings-2.pdf 0 8296f71b-b92b-11ee-b0d4-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=24322 Zavod za gradbeništvo Slovenije 0 0 0