20.500.12556/DiRROS-16464 Optimization and mechanical-physical characterization of geopolymers with construction and demolition waste (CDW) aggregates for construction products The paper presents the mechanical and physical characterization of a metakaolin-slag-fly ash-potassium silicate geopolymer mortar embedding inorganic recycled aggregates from Construction and Demolition Waste (CDW). The binder was holistically optimized to comply with the pilot plant requirements for producing architectural panels of satisfactory quality, among them: reduced viscosity, minimum open time of 1 h, use of commercial reagents, sufficient strength and limited shrinkage. Size and aspect ratio of small scale cylindrical specimens were investigated in compression, comparing the performance of tested geopolymers to available provisions for natural rocks, cement concrete and mortars. Empirical correlations between compressive and splitting tensile strength were calibrated through the results of about 130 geopolymer mixtures produced in former and current activities. Lastly, the suitability of reusing geopolymers at their end-of-life as recycled aggregates in a new geopolymer production was preliminarily assessed to explore the feasibility of a closed-loop process. construction and demolition waste alkali activated materials geopolymers properties gradbeni odpad alkalijsko aktivirani materiali geopolimeri lastnosti true false true Scientific & Technical Press Angleški jezik Slovenski jezik © 2020 The Authors. Published by Elsevier Ltd Neznano 2023-04-25 08:40:14 2023-08-17 09:00:17 2023-08-18 03:36:02 0000-00-00 00:00:00 2020 0 0 Št. članka: 120158; str. 1-17 Vol. 264 Dec. 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2020-07-28 620.1/.2 0950-0618 10.1016/j.conbuildmat.2020.120158 24237571 https://www.sciencedirect.com/science/article/pii/S0950061820321632?via%3Dihub Odprti dostop 1 466d7431-e323-11ed-a314-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22177 RAZ_Panizza_Matteo_2020.pdf RAZ_Panizza_Matteo_2020.pdf 1 4040D9987FD1D1404E72E22E5930BC50 6287442db542721506ec628829a033f045fdad17a82079993ac3bcf7764b519b 5e5b5512-e325-11ed-a314-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22178 Zavod za gradbeništvo Slovenije 0 0 0