20.500.12556/DiRROS-17183 Production of lightweight alkali activated mortars using mineral wools This experimental study aimed to develop a fiber-reinforced lightweight mineral wool-based alkali activated mortar. The lightweight mineral wool-based alkali activated mortars were produced using premade foam and reinforced by polypropylene (PP) fibers. They were assessed in terms of fresh and hardened-state properties. Fresh-state properties were investigated by mini-slump tests. Hardened-state characteristics were assessed by ultrasonic pulse velocity, dry density, compressive and flexural strengths, drying shrinkage, efflorescence, water absorption, and permeable porosity. For the first time, the resistance of the synthesized lightweight mineral wool-based alkali activated mortars against harsh conditions (carbonation, freeze and thaw, and high temperature) were evaluated. The porous structures of the developed lightweight alkali activated mortars were also analyzed using an X-ray micro-computed tomography (CT) technique. Lightweight mix compositions with densities in a range of 770%1510 kg/m3, compressive strengths of 1%9 MPa, and flexural strengths of 2.6%8 MPa were developed. Increases in both density and strength after carbonation were also recorded, while a decrease of strength was noticed after exposure to freeze/thaw and high temperatures of up to 500 %C. alkali activation mineral wool mortars alkalna aktivacija mineralna volna malte true false true Molecular Diversity Preservation International Angleški jezik Slovenski jezik © 2019 by the authors. Licensee MDPI, Basel, Switzerland. Neznano 2023-10-24 09:17:14 2023-10-24 09:25:39 2023-10-25 03:47:53 0000-00-00 00:00:00 2019 0 0 Nasl. z nasl. zaslona; Opis vira z dne 29. 5. 2019; Št. članka : 1965; str. 1-34 no. 10 Vol. 12 2019 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2019-05-24 620.1/.2 1996-1944 10.3390/ma12101695 2461799 https://www.mdpi.com/1996-1944/12/10/1695 1 636aa23c-722c-11ee-8cc8-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23321 RAZ_Alzaza_Ahmad_2019.pdf RAZ_Alzaza_Ahmad_2019.pdf 1 C315266A293594E6594E4BA80093F18F 3fdacf3cc6afc3e0660b447b4e82a82c8b783e71df9b12177b0470b29eaab763 6cdef09a-722d-11ee-8cc8-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23322 Zavod za gradbeništvo Slovenije 0 0 0