1. Practical insights and advances in concrete pumpingDaniil Mikhalev, Ana Brunčič, 2024, original scientific article Abstract: This technical letter gives a concise overview of the state-of-the-art in concrete pumping. It outlines the different pump systems, briefly describes the general flow behavior of concrete in pipes, and addresses the main challenges of pumping. It also elaborates upon factors influencing the pumping behavior and how to control the pumping process.
Keywords: rheology, quality control, pressure, concrete, pumping, lubrication layer
Published in DiRROS: 18.02.2025; Views: 577; Downloads: 352
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2. A numerical study of gas focused non-Newtonian micro-jetsRizwan Zahoor, Saša Bajt, Božidar Šarler, 2024, original scientific article Keywords: serial crystallography, micro jets, multiphase flow, fluid rheology, non-Newtonian fluid, flow focusing
Published in DiRROS: 28.02.2024; Views: 1072; Downloads: 669
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3. Mud from the Sitarjevec mine as a pigment for textile printingDarja Rant, Mateja Štefančič, Vesna Zalar Serjun, Mateja Golež, 2021, published scientific conference contribution Abstract: The Sitarjevec mine, located near the town of Litija (Central Slovenia), is recognized by the strong yellow colour of its dripstone structures and mine mud deposits. The mine mud, composed predominantly of goethite, accumulates on the ground of the mine shafts as the result of the interaction between percolating underground water, iron ore minerals and microorganisms. Since the accumulation of limonite mine mud is an ongoing process, larger quantities of mud have been deposited in the mine shafts since its closure. These deposits present a real threat of unleashing a mine mud spill on the town of Litija. Such a scenario has already previously occurred. In order to find new potential routes for recycling larger quantities of this mine mud, the present research work was performed to assess the use of mine mud as a pigment in the dye industry. In the first stage, the chemical (XRF) and microstructural (SEM) characteristics of the mine mud were defined together with the identification of its phase composition (XRD), particle size distribution and specific surface area (BET). Furthermore, the pigment was used to colour textile printing paste on a laboratory scale. To define the most appropriate quality of textile prints the rheological response of the various textile printing paste samples was investigated in terms of their plastic viscosity, indicating their suitability for use in textile printing. Test prints wereconducted, and the properties of leaching and fastness in the prints were assessed.
Keywords: mine mud, recycling, pigment, printing paste, textile, rheology
Published in DiRROS: 25.01.2024; Views: 1200; Downloads: 799
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6. In-depth rheological characterization of tungsten sol-gel inks for inkjet printingUrša Opara Krašovec, Tjaša Vidmar, Marta Klanjšek Gunde, Romana Cerc Korošec, Lidija Slemenik Perše, 2022, original scientific article Keywords: rheology, inkjet printing, tungsten oxide, sol-gel
Published in DiRROS: 11.02.2022; Views: 1773; Downloads: 1186
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