20.500.12556/DiRROS-15870 Experimental carbonation study for a durability assessment of novel cementitious materials Durability predictions of concrete structures are derived from experience-based require- ments and descriptive exposure classes. To support durability predictions, a numerical model related to the carbonation resistance of concrete was developed. The model couples the rate of carbonation with the drying rate. This paper presents the accelerated carbonation and moisture transport exper- iments performed to calibrate and verify the numerical model. They were conducted on mortars with a water-cement ratio of either 0.6 or 0.5, incorporating either a novel cement CEM II/C (S-LL) (EnM group) or commercially available CEM II/A-S cement (RefM group). The carbonation rate was determined by visual assessment and thermogravimetric analysis (TGA). Moisture transport experi- ments, consisting of drying and resaturation, utilized the gravimetric method. Higher carbonation rates expressed in mm/day−0.5 were found in the EnM group than in the RefM group. However, the TGA showed that the initial portlandite (CH) content was lower in the EnM than in the RefM, which could explain the difference in carbonation rates. The resaturation experiments indicate an increase in the suction porosity in the carbonated specimens compared to the non-carbonated specimens. The study concludes that low clinker content causes lower resistance to carbonation, since less CH is available in the surface layers; thus, the carbonation front progresses more rapidly towards the core. mortar absorption of water carbonation durability assessment model verification malta absorpcija vode karbonizacija ocena trajnosti verifikacija modela true false true Molecular Diversity Preservation International Angleški jezik Slovenski jezik © 2021 by the authors. Licensee MDPI, Basel, Switzerland. Neznano 2022-12-01 14:07:16 2023-07-05 07:48:05 2023-07-06 03:35:15 0000-00-00 00:00:00 2021 0 0 Nasl. z nasl. zaslona; Opis vira z dne 17. 12. 2021; This article belongs to the Special Issue Feature papers on construction materials for a sustainable future 2020/21; Št. članka 6253; str. 1-17 iss. 21 Vol. 14 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2021-10-21 620.1/2 1996-1944 10.3390/ma14216253 90016515 https://www.mdpi.com/1996-1944/14/21/6253 1 b2e74521-7170-11ed-a69a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=20987 RAZ_Hanzic_Lucija_2021.pdf RAZ_Hanzic_Lucija_2021.pdf 1 00E12E3FB50A4311BBB08DF93C8E8237 02069b89e23bebb748da41bd025081eaa7cd24704018ce19a671b69b63f80403 615b88f2-9b1b-11ed-b359-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=21445 Zavod za gradbeništvo Slovenije 0 0 0