Browsing by Author "Fiol, Francisco"
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Item Concrete pavements with electric arc furnace slag as aggregate(University of Cantabria - Building Technology R&D Group, 2018) Ortega-López, Vanesa; Fuente-Alonso, José Antonio; Skaf, Marta; Fiol, Francisco; Manso, Juan Manuel; Chica, José Antonio; Villegas, Luis; Lombillo, Ignacio; Blanco, Haydee; Boffill, Yosbel; Villegas, Luis; Lombillo, Ignacio; Blanco, Haydee; Boffill, Yosbel; SGSteelmaking industry generates vast amount of waste aggregates. The practical use of electric steelmaking furnaces is divided into two stages: the primary melting-oxidizing processes and the secondary-reducing processes. In the first, an Electric Arc Furnace will generate slag (EAFS) in proportions of 150 to 180 kg per ton of steel. In Spain, approximately 70% of total steel is produced in electric arc furnaces representing around 15% of total European EAF steel, and leaving more than 1 Million tons of EAFS every year. In order to reduce these EAFS, many researchers around the world are studying applications for their incorporation. In the present research, mixes of steel slag concrete (CEAFS) were reinforced with fibers, and their properties in fresh and the hardened state were analyzed; likewise, some real slabs were constructed. The results were very promising, reaching the CEAFS reinforced with around 0.5% of fibers, good mechanical behavior, appropriate toughness, and suitable impact resistance for its use in pavements and slabs of buildings.Item Sustainable masonry mortars based on ladle furnace slags from the steel-making industry(University of Cantabria - Building Technology R&D Group, 2020) Santamaría, Amaia; Fiol, Francisco; García, Verónica; Setién, Jesús; González, Javier Jesús; Lombillo, Ignacio; Blanco, Haydee; Boffill, Yosbel; TRAZABILIDAD CIRCULARMasonry mortars are applied to concrete and brickwork to form structural bonds. Partial substitution of their natural raw materials by waste products from the steel industry represents a sustainable approach towards the ecological management of those materials in Spain, where iron and steelmaking is a highly developed heavy industrial sector. Additionally, a somewhat more traditional industrial sector, the building industry, also consumes large amounts of natural resources and energy, likewise resulting in high CO2 emission levels. The present research is focused on solid waste from the steelmaking industry and its addition in significant amounts to masonry mortars. Labelled as “white” slag, the waste (saturated in alumina) is commonly known as ladle furnace slag. To do so, several lab tests are presented, which investigate the partial substitution of fillers and hydraulic binders in regular masonry mortars. Firstly, the study of ladle furnace slag and its overall properties and, secondly, studying the feasibility of producing Ladle Furnace Slag mortars, yielded interesting and positive results.