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2. Influence of remelting on ▫$AlSi_9Cu_3(Fe)$▫ alloy propertiesZdenka Zovko Brodarac, Franjo Kozina, Davor Stanić, Martin Folta, Jože Medved, Jaka Burja, 2025, izvirni znanstveni članek Ključne besede: recycling potential, quality, AlSi9Cu3(Fe) alloy, solidification, thermodynamics, microstructure
Objavljeno v DiRROS: 24.12.2025; Ogledov: 278; Prenosov: 60
 Celotno besedilo (2,06 MB)
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3. Use to reuse : mapping and assessing chemically treated end-oflife timber for circularity in AustraliaPenelope Mitchell, 2025, izvirni znanstveni članek Povzetek: he current and projected availability of end-of-life treated-timber vineyard posts in Australia has been assessed and mapped to enhance timber recycling and reuse potential by improving the visibility of timber flows. While timber provides benefits such as low embodied carbon and renewability, chemically treated variants present significant challenges for reuse and recycling. This study addresses these barriers and aims to develop circular economy pathways for preservative-treated timber products in Australia, ultimately reducing the amount of timber sent to landfill. Data were collected through industry site visits, surveys, and publicly available sources. The inclusion of councils with existing circular economy strategies highlights regions that could develop into circular economy hubs, supporting new business opportunities. This map helps identify resource distribution, infrastructure, and regulatory constraints, enabling informed decision-making and fostering stakeholder collaboration.
Ključne besede: resource recovery, recycling, reuse, timber circularity, treated wood, preservative-treated wood, treated timber, preservative-treated timber, vineyard post
Objavljeno v DiRROS: 24.12.2025; Ogledov: 225; Prenosov: 107
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4. Recycling mineral wool waste : towards sustainable construction materialsMartina Milat, Sandra Juradin, Nives Ostojić-Škomrlj, Anže Tesovnik, 2025, pregledni znanstveni članek Povzetek: This literature review critically examines the incorporation of mineral wool waste (MWW), a byproduct of insulation materials, into new construction materials as a sustainable recycling strategy. Covering research published between 2000 and 2025, the review focuses on the effects of MWW on various material properties and performance, including concrete, mortar, alkali-activated materials (AAMs), geopolymers (GPs), building ceramics, and asphalt. Experimental evidence demonstrates that MWW can enhance or alter the performance of these materials, offering promising opportunities for waste valorization. The review also identifies challenges related to optimizing material compositions and production methods, and highlights the need for further research to facilitate the industrial-scale application of MWW-recycled construction materials. By synthesizing current knowledge, this work aims to inform sustainable development and circular economy practices in the construction sector.
Ključne besede: mineral wool waste, rock wool, glass wool, recycling, sustainability, construction and demolition waste
Objavljeno v DiRROS: 19.09.2025; Ogledov: 394; Prenosov: 174
Celotno besedilo (7,16 MB)
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6. Challenges for the corrosion science, engineering, and technology community as a consequence of growing demand and consumption of materials : a sustainability issueIngrid Milošev, John R. Scully, 2023, izvirni znanstveni članek Povzetek: This perspective is intended to bring awareness to the corrosion community that the growing demand for engineering metallic materials required for our increasingly technological society is unsustainable. Current strategies important for materials science and especially the corrosion community are presented. First, the consumption of metals is reviewed, and the global supplies and demands of metals are discussed given different scenarios, including models of global societal development. It is pointed out that expected future consumption rates place pressure on the availability of specific elements used regularly throughout the world, with nearly every element in the periodic table now utilized in production of new technological devices. The consumption pushes the mining and production of metals to levels that should be counterbalanced with novel engineering and technological methods that incorporate strategies for metal sustainability. Standard approaches such as “make-use-dispose” must gradually be transformed into a circular economy paradigm embracing the “reduce-reuse-recycle” approach. Although recycling can bolster the engineered material supply, the growing demands require additional actions to significantly preserve natural resources and prolong metal sustainability. Our views on the abilities of the corrosion community to contribute to the concept of a circular sustainable economy are introduced. Maintenance strategies and corrosion management control may not be sufficient and need to be complemented with existing or emerging new technologies such as additive manufacturing, inverse engineering design, and solvometallurgy in combination with integrative design, modeling, and machine learning approaches. The corrosion community can impact the end-of-life of components and infrastructure at different levels, starting from mining through design, production, use, reuse, and recycling. Each process step is discussed, seeking possible solutions to preserve the metal resources by, for example, achieving more efficient and high-yield mining, designing and modeling new materials, increasing production efficiency, introducing light-weighting and smart materials, as well as developing more efficient recovery, recycling, and separation.
Ključne besede: circular economy, metal recycling, solvometallurgy, sustainability
Objavljeno v DiRROS: 29.04.2025; Ogledov: 696; Prenosov: 369
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7. Upcycling municipal solid waste incineration bottom ash in clay-bonded bricksAdeolu Adesoji Adediran, Shaurin Maher Kikky, Suman Kumar Adhikary, Vilma Ducman, Priyadharshini Perumal, 2024, izvirni znanstveni članek Povzetek: There is an increasing concern about the management of municipal solid waste incineration bottom ash (BA), of which approximately 300,000 tons are generated annually in Finland. As an alternative to the landfilling of this waste, which is the most common practice in the industry, this study investigates the feasibility of upcycling BA for clay brick production. Here, kaolinitic and illitic clays were selected as the precursors. Kaolinitic or illitic clays containing 10, 20, and 30 wt% BA and their counterparts without BA were fired at 1000 ◦C. The materials and prepared bricks were characterized using X-ray diffraction, thermogravimetry, scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy, mass loss, visual appearance, linear shrinkage, water ab- sorption, apparent density, compressive strength, freeze–thaw, and leaching tests. The experimental results show that the incorporation of BA as an admixture positively influenced the properties of illitic clay-based bricks, which exhibited a reduction in cracks, mass loss, and water absorption while having higher apparent density, compressive strength, and residual strength than kaolinitic clay-based bricks. This is mainly ascribed to the difference in their sintering behavior and chemical and mineralogical composition; more notably, it is ascribed to the higher content of alkali oxides (K2O and Na2O) in the illitic clay than in the kaolinitic clay. The water ab- sorption of the bricks varied from 4 % to 25 %, and the compressive strength varied from 12 to 19 MPa depending on the BA content and clay type. Nevertheless, the compressive strength of all bricks satisfied the ASTM C62 standard for bricks subjected to negligible weathering, and the residual strength of some samples after exposure to 50 freeze–thaw cycles demonstrated their resistance to severe weathering. The dual effects of sintering and BA addition resulted in more stable crystalline phases and a densified microstructure. Moreover, the heavy metals in BA were encapsulated in kaolinitic and illitic clay bricks and satisfied EU regulations for inert and nonhazardous materials.
Ključne besede: municipality incineration ash, bricks, recycling
Objavljeno v DiRROS: 15.04.2025; Ogledov: 584; Prenosov: 304
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9. Mineral waste into alkali-activated pavementsMajda Pavlin, Kaja Zupančič, Alenka Sešek Pavlin, 2025, objavljeni znanstveni prispevek na konferenci Povzetek: The study highlights the pressing need to recycle mineral waste to mitigate resource depletion and environmental damage. It focuses on creating sustainable pavement slabs through alkali activation, using a variety of waste materials such as bio-ash, local slags and mineral wool. Through extensive testing of different mix designs, the optimal mixture was identified: bio-ash, ladle slag, and metakaolin, activated with sodium silicate. This combination demonstrated good mechanical properties and showed low concentrations of toxic elements in leaching tests, confirming environmental safety. The research also prioritized energy efficiency, with the curing process conducted at room temperature and demolding after just one day. A test field at Termit d.d. was established to assess the practical application and potential for commercial use of these innovative paving materials, aiming to support a circular economy by extending the lifecycle of resources.
Ključne besede: alkali-activation, pavement slabs, mineral waste, recycling
Objavljeno v DiRROS: 07.04.2025; Ogledov: 706; Prenosov: 336
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10. Recycled red mud as an useful geotechnical materialPrimož Pavšič, Marija Đurić, Mateja Košir, Alenka Mauko Pranjić, Ana Mladenovič, Primož Oprčkal, Sara Seršen, Vesna Zalar Serjun, 2024, objavljeni znanstveni prispevek na konferenci Povzetek: Red mud (RM) is an extractive waste from Bayer process in alumina production. The most conventional methods of RM disposal are tailing dams, or dry storage,both of which raiseenvironmental concerns due to the high alkalinity of RMandthe presence and leaching of potentially hazardous elements (PTEs).Due to its fine-grained nature and poor mechanical properties, as well as leaching of potentially hazardous substances, RM cannot be used by itself. Properties of the RM can be improved, by mixing it with hydraulic or pozzolanic binders, such as calcareous ashes or steelmaking slag, to produce mechanically stable and durable composites for earthworks. On the other hand, RMcan also serve as an immobilization additive for remediation of contaminated soils.Two different approaches for useful utilization of RMare presented based on results of laboratory research and a real case study, opening of new possibilities for conserving natural resources and reducing environmental hazards of RM deposits.
Ključne besede: red mud, recycling, geotechnical composites, environment
Objavljeno v DiRROS: 30.10.2024; Ogledov: 990; Prenosov: 1184
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