1. Optimized mix design and fire resistance of geopolymer recycled aggregate concrete under elevated temperaturesBright Asante, Bo Wang, Libo Yan, Bohumil Kasal, 2025, original scientific article Abstract: This study investigates the performance of fly ash-based geopolymer recycled aggregate concrete (GRAC) as a sustainable alternative to Ordinary Portland Cement (OPC) concrete, focusing on its compressive strength and behavior under high-temperature exposure (150 °C, 300 °C, 600 °C, and 900 °C). The research emphasizes the use of 100 % recycled concrete aggregates as a replacement for natural aggregates, with samples cured at ambient conditions and at 60 °C in an oven. Key factors, including water content and curing conditions, were evaluated to determine their influence on compressive strength and thermal stability. Results indicate that water content is the primary factor governing compressive strength, while recycled aggregates contribute to a secondary but notable effect. GRAC maintained up to 65 % of its initial strength after exposure to 600 °C, though strength degradation and severe cracking occurred at 900 °C. Oven-cured samples showed fewer surface cracks but experienced slightly higher mass loss than room-cured counterparts. This study highlights the potential of GRAC as an environmentally friendly material capable of withstanding moderate thermal conditions, providing significant contributions to green construction practices and the reuse of construction and demolition waste.
Keywords: geopolymer, recycled aggregate concrete, elevated temperature
Published in RUP: 23.12.2025; Views: 158; Downloads: 2
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2. Spatial distribution of Ixodes ricinus in forest habitats : a comparative study of the northern and southern slopes of Mount Slavnik, SloveniaJure Jugovic, Alenka Babič, Ana Kuhelj, Vladimir Ivović, 2025, original scientific article Abstract: While previous studies have examined the elevational limits of Ixodes ricinus in Central Europe, this study is the first to investigate the influence of slope orientation on tick distribution in Slovenia. Our results provide new insights into how two important microclimatic factors, temperature and humidity, vary between the northern and south- ern slopes, and how these differences affect the abundance of I. ricinus, a factor that has not been studied in this region before. We found that nymph density was highest on the southern slope at intermediate elevations (720 m) and increased with temperature. In contrast, fewer adult ticks were found on the southern slope compared to the northern slope, most of them at 720 m elevations. The significantly higher abundance of adult ticks on the northern slope is probably related to the cooler temperatures, higher relative humidity, denser ground vegetation and greater availability of hosts such as roe deer. Although these results are regionally specific, they contribute to a more comprehensive understanding of the ecological factors influencing the distribution of I. ricinus in Central Europe.
Keywords: tick, elevational distribution, slope orientation, temperature, relative humidity
Published in RUP: 05.08.2025; Views: 405; Downloads: 5
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4. Množični pojav vrste Salpa fusiformis Cuvier, 1804 v severnem Jadranu : magistrsko deloKlaudia Opačak - Vukušić, 2024, master's thesis Keywords: Salpa fusiformis, swarm, northern Adriatic sea, temperature, stratification, ecological impacts, master's thesis
Published in RUP: 29.09.2024; Views: 1475; Downloads: 22
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5. Impact of drying process on kraft lignin : ligninwater interaction mechanism study by 2D NIR correlation spectroscopyOihana Gordobil, Rene Alexander Herrera Diaz, Faksawat Poohphajai, Jakub Michal Sandak, Anna Malgorzata Sandak, 2021, original scientific article Keywords: hardwood kraft lignin, drying temperature, DVS, NIR spectroscopy, 2D-COS
Published in RUP: 06.05.2021; Views: 3568; Downloads: 11
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6. Zdravstvena nega otroka pri povišani telesni temperaturi in vročinskem krču, študija primera v Bolnišnici Šempeter : diplomska nalogaManuela Morvai, 2011, undergraduate thesis Keywords: otroci, povišana telesna temperatura, vročina, medicinske sestre, metode zniževanja telesne temperature, vročinski krči, zdravstvena nega, metoda Handerson, študija primera, diplomske naloge
Published in RUP: 18.03.2019; Views: 6287; Downloads: 256
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9. Physiological and cognitive effects of wearing a full-face motorcycle helmetCornelis P. Bogerd, 2009, doctoral dissertation Keywords: motorcycle helmet, thermal comfort, temperature perception, thermal manikin, human subject measurements, airflow perception, noise perception, heat loss, heat transfer, forced convection, ETH Zürich
Published in RUP: 15.10.2013; Views: 4512; Downloads: 194
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