In this study, a sustainable concrete was proposed by the synergetic valorization of recycled concrete aggregates and waste glass powder. The microstructure, mechanical strength, and bonding properties of this sustainable concrete were systematically investigated, along with the economic and ecological benefits using life cycle assessment method.
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The production of artificial aggregates from mining and metallurgical waste contributes to the preservation of non-renewable natural rock resources. Additionally, the use of artificial aggregates in construction, …
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Bio-based aggregates. Research is underway to develop concrete for loadbearing applications using bio-based aggregates such as cement-free bio-based cold-bonded lightweight aggregates. However, until such applications are widely available, ecological impacts of aggregates should be addressed using the resource use mitigation hierarchy.
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The irregular surface texture of the recycled aggregates, in contrast to natural aggregates, reduced the packing efficiency of the aggregate matrix, diminishing the available surface area for the new mortar to bond with the aggregate, leading to a weaker interfacial transition zone and consequent decrement in compressive strength (Saiz ...
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This paper reviews previous scientific studies on using mining waste as substitutes for traditional concrete materials. The main goal of this review is to identify the possible challenges and limitations related to the use of mine wastes in concrete. ... Carvalho et al. 2022 studied the use of quartz mining waste was used as aggregates in ...
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Download scientific diagram | Artificial aggregates: preliminary studies, engineered shape and surfaces. from publication: Reuse of mining waste into innovative alkali-activated-based materials ...
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Therefore, the aim of the present study is to evaluate the utilization of calcined aggregates produced from fine mining waste (sludge) as an alternative material for pavement construction that meets the criteria for selecting …
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The usage of construction and demolition waste aggregates helps in reducing the depletion of natural aggregates and problems related to mining the aggregates. It is found that the quality of natural aggregates is better compared to the construction and demolition waste aggregates. Thus, demolition waste aggregates have limited usage.
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The mining process involves drilling and excavation, resulting in the production of waste rock and tailings. The waste materials are then removed and stored in designated areas. This study aims to evaluate the mechanical strength and the environmental and economic impact of using Coltan Mining Waste (CMW) as a substitute for aggregates in concrete and mortar production.
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Environmental behavior of construction and demolition waste in cemented backfilling mining technology (CW-CBMT) is studied, with the aim of expanding the scope of construction and demolition waste (CDW) utilization, as well as developing strategies to release coal resources. ... Leaching toxicity and surface subsidence studies J Hazard Mater ...
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In the present study, use of mining waste, generated during mining of dimensional limestone is recycled, and used in different layers of flexible pavement. The waste was generated in the form of slurry and boulders. ... Here, waste aggregate was added in interval of 5% as replacement to conventional aggregates and replacement was done till 20% ...
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The expansion of aggregates due to alkali-aggregates reaction or internal sulfate attack in waste rock-based concrete which mix design is given in Table 1.3. The parameter was measured in triplicate according to the procedure length change of concrete prisms 75 × 75 × 275 mm as indicated in CSA A23.2–14A standard method, which is equivalent ...
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Shotcrete, due to its wide use in the mining industry, can be a solution to address the problem of tailings accumulation. In various mining deposits around the world, large volumes of shotcrete are used, as is the case with the El Teniente and Chuquicamata mines, which consume approximately 80,000 m 3 and 150,000 m 3 per year, respectively [].This situation …
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Marble industry produces large amount of waste during mining and processing stages. ... campaign to review and develop the results of studies already carried out [6,7] by our team. In this paper, we study the marble waste of Fil-Fila …
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This paper discusses the possibility of utilizing the construction and demolition waste (CDW) as cemented recycled aggregate backfill (CRAB) materials in the underground mining industry. In this regard, several samples were prepared by mixing the recycled aggregates of CDW components and Portland cement and various tests were performed to ...
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Some studies focused on mining waste rocks as major constituents of construction material under the principles of sustainable development. Benarchid et al. ... Concrete containing low-sulphide waste rocks as fine and coarse aggregates: preliminary assessment of materials. J. Clean. Prod., 221 (2019), pp. 419-429.
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In this chapter, typical mining areas are selected as case studies, focusing on the utilization approaches and effectiveness of mining solid waste, such as coal gangue, fly ash, and metal tailings. ... Experimental research on application of mixed aggregate of mining waste rock and tailings in downward layered approach and cemented filling ...
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Natural aggregate quarrying significantly impacts the environment while phosphate mine waste rock (PMWR) offers alternative aggregates for use in high-added value construction materials.
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Owing to a severe shortage of natural aggregates in terms of quantity and quality, alternative aggregate resources must be utilized in civil engineering construction to meet significant increase in aggregate demand. This study focuses on manufacturing artificial aggregates for pavement applications using two waste materials- mine overburden ...
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The mining industry manages large volumes of tailings, sludge, and residues that represent a huge environmental issue. This fact has prompted research into valorization of these wastes as ...
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In the field studies, it was observed that 6 tons of sterile waste is generated per day that meets the standards as a construction aggregate for use in the concrete mix.
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This article presents a comprehensive scientometric analysis of mining waste valorization, focusing on tailings utilization in construction materials from 2010 to 2024. Through examination of 1096 Web of Science publications and utilizing CiteSpace mapping and network analyses, we analyze the intellectual structure of this field. Subject category analysis reveals …
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Mining waste, with its physical characteristics and chemical composition, can function as diverse components in concrete, such as sand, aggregates, and binders.
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In this context, several geotechnical studies have been conducted with the aim of making quartzite mining tailings an alternative source of raw material for different purposes in engineering works or civil construction, for example, aiming to use this waste as aggregate in concrete [12,13,14].Most studies involved the production of structural concrete, with the need to carry …
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An experimental research has been developed with the aim of studying the possible reuse of waste rocks – coming from mining activities-as fine aggregates in a fly ash based geopolymer: physical, chemical and mechanical tests have been carried out in order to analyze in detail the interaction between the geopolymer binder and the rock waste ...
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The aim of the present study was to evaluate the technical feasibility of using a calcined aggregate with mining residue in different pavement layers, including the base, subbase, and wearing ...
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Due to the large amount of antimony ore waste rock produced by perennial mining, the antimony ore waste rock is deposited in the open air and need high treatment cost. The goal of this study is to provide a possibility to utilize the antimony waste rock as a complete replacement for coarse aggregate in high strength concrete.
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Utilization of mine waste rocks and tailings in concrete as aggregates will help in sustainable and greener development. The literature shows the potential use of iron ore tailings as a ...
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It delves into the innovative repurposing of mining waste as aggregate in concrete production, advocating for a shift towards sustainable and eco-friendly practices. ... Overall, red mud is the preeminent focus in mining waste studies, holding a substantial share in the analysed literature with 95 of the surveyed articles spotlighting its reuse.
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The use of mining waste is the key to the development of more self-sustainable and less-polluting constructions, since it is possible to manufacture mortars and concrete with …
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Capasso et al. in their study found that the compressive strength did not increase significantly on the addition of aggregate and when the mining waste content was added whose aggregate size was ...
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