20.500.12556/DiRROS-15834 Innovative calcium carbonate-based products to repair cracked cement mortars The durability of Portland cement mortars is often affected by environmental factors, which can cause physicochemical and mechanical degradation processes. In this study, the performance of three products, calcium acetoacetate and calcium tetrahydrofurfuryloxide dissolved in two different solvents developed and tested as stone consolidants, was evaluated in terms of crack filling or sealing and consolidation. Realistic cracks were induced in quasibrittle cement mortar prisms using a custom-designed test rig. The effectiveness and the performance of the considered treatments, investigated on specimens, were evaluated by optical and scanning electron microscopy, colourimetry, water absorption rate, ultrasonic pulse velocity, and surface hardness measurements. Results revealed that, in the examined conditions, the products were more suitable as surface consolidants than as crack fillers. cement mortars 20th century architecture conservation calcium acetoacetate calcium alkoxide concrete repair open access cementne malte konzervatorstvo arhitektura 20. stoletje kalcijev acetoacetat kalcijev alkoksid popravilo betona odprti dostop true false true Molecular Diversity Preservation International Angleški jezik Slovenski jezik © 2022 by the authors. Licensee MDPI, Basel, Switzerland Neznano 2022-11-23 12:51:20 2023-05-04 08:42:22 2023-05-05 03:35:30 0000-00-00 00:00:00 2022 0 0 Nasl. z nasl. zaslona; Opis vira z dne 4. 5. 2022; Št. članka 4044; str. 1-14 iss. 12 Vol. 15 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2022-06-07 54 1996-1944 10.3390/ma15124044 110842115 RAZ_Zuena_Martina_2022.pdf RAZ_Zuena_Martina_2022.pdf 1 8BCAD912402D4EB88C69B4A0F50538ED d1a63c71413a2811dfc42a877ab9181652c12c95bc05d3364a1601b144642475 cc94f2c4-8b4c-11ed-b359-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=21200 RAZ_Zuena_Martina_2022.pdf RAZ_Zuena_Martina_2022.pdf 1 97A98F5D99953F1D7502F6D9925FB1D6 74277811ddc939ae9e1a530a6f60c2d45a869b7212ca8579b91f8f63d401312c 04615307-ea36-11ed-a314-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22253 https://www.mdpi.com/1996-1944/15/12/4044 0 ed9b933f-ea35-11ed-a314-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22252 Zavod za gradbeništvo Slovenije 0 0 0