20.500.12556/RUL-147449 Mineralogical characterization of historical cement-based mortars from the Rupnik Military Fortification Line This paper presents the results of cement-based mortars characterizations that were taken from rendered layers of military bunkers in the Rupnik Line. The Rupnik Line was conceived as a part of the fortified defence system protecting the Rapallo Border between the Kingdom of Italy and the Kingdom of Yugoslavia, established in 1920. The bunkers were built between 1938 and 1941, and the renders of various compositions were applied as a camouflage layer that merged the bunkers with the environment. Results of petrographic examination and microstructural and chemical analysis of the samples confirmed that locally available crushed dolomite or limestone sands were used as an aggregate in the mortars. As binders, pure Portland cement or a mixture of cement and ground granulated blast furnace slag were used. The selection of the aggregate and binder type in a particular mortar was based on the colour of the artificial stone produced. All samples with the dolomite aggregate show the presence of alkali-aggregate reactions, dedolomitization of the grains and secondary calcite formation in the cement binder, along with the Mg-Al, Mg-Si and Mg-Al-Si phase formations. In mortar compositions with a high Portland cement content, the presence of delayed ettringite formation was also confirmed. ACR reactions camouflage renders cement-based mortars DEF military bunkers Rupnik Line true false true Angleški jezik Ni določen Članek v reviji 2023-07-05 11:27:37 2023-07-05 11:27:40 2023-07-06 03:47:25 0000-00-00 00:00:00 2020 0 0 Str. 1030–1041 no. 7 Vol. 14 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 691 1558-3058 10.1080/15583058.2020.1745320 9112417 Mineralogical_Characterization_of_Historical_Cement_based_Mortars_from_the_Rupnik_Military_Fortification_Line.pdf Mineralogical_Characterization_of_Historical_Cement_based_Mortars_from_the_Rupnik_Military_Fortification_Line.pdf 1 C650FE3D9E5C9F8B296BEE66B0A61C88 4f6c3d8f3e46c846b2355aa5522ed55b013001ae9563a766ef9ee670373f43b7 51c36bf9-1b16-11ee-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=171031 https://www.tandfonline.com/doi/full/10.1080/15583058.2020.1745320 0 34feddf3-1b16-11ee-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=171030 Fakulteta za gradbeništvo in geodezijo Fakulteta za arhitekturo Fakulteta za kemijo in kemijsko tehnologijo 0 0 0