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33 ISSN: 2456-4834 Available online at Journals.aijr Study on Properties of Concrete with Iron Ore Tailing and Glass Waste Table 4: coarse aggregate sieve result (Sample-5kg) IS sieve
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Figure 8: Mass loss rate of iron ore tailings recycled aggregate concrete during F-T cycle: (a) the dosage of RCA is 30%; (b) the dosage of RCA is 50%. 0 25 50 75 100 125 150 175 200 225
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2. 3. Kg/m3 383 546 1187 Ingredients Ordinary Portland Cement Fine Aggregate Coarse Aggregate Proportion 1:1.5:3 W/C = 0.5 Cement used for the study was tested for the parameters specific gravity, …
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Grain size distribution of coarse waste rocks fraction was similar to reference gravels used for concretes production. • Total sulfur content of waste rocks was not exceeding 0.5 wt%, classifying the material as non-acid generating. • Iron sulfides (mainly of pyrite) are almost encapsuled within gangue mineral. Only 2% of pyrite is free. •
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The objective of this work is to evaluate of the Performance of iron ore waste as potential recycled aggregate for Micro-surfacing type cold asphalt mixtures. This study is the continuation of the study carried out by [36], [39], [40], Apaza et al. [43], where preliminary results were obtained on the functional characteristics of the iron ore ...
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The search for alternatives that can replace conventional materials extracted from nature is crucial for environmental sustainability. This is especially the case for construction and geotechnical engineering, as this sector is a major consumer of the planet's natural resources. This paper explores the use of ore sand (OS) tailings with …
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The application of IOTs in concrete can fix the issues related to the management of waste residue of iron ore, and alleviate the increasing scarcity of natural aggregates. ... Mechanical performance evaluation of concrete made with recycled ceramic coarse aggregates from industrial brick waste. Construct. Build. Mater., 165 (2018), pp. …
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Iron tailings ne aggregate (IOTs-FA) with a neness modulus of 2.0 was provided by Liaoning One Cube Sand Industry Co., Ltd. The coarse aggregate, which has a par-ticle size range of 5 – 20 mm, is the iron ore waste stone coarse aggregate (IOTs-CA) provided by Liaoning Yicu Sand Industry Co., Ltd. The gradation curves of the ne
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iron ore tailings which is the waste products of mining ... Coarse aggregates are those which are retained on IS sieve size 4.75 mm. In the present study, aggregates of size 20mm
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Coarse aggregates are those which are retained on IS sieve size 4.75mm.In the present study, aggregates of size 20mm&10mm from the local source were used as coarse aggregates. ... Concrete with 25-30% of GGBS and mining waste (Iron ore tailings) instead of sand can b used as high strength concrete as it is giving more …
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This study focuses on fine aggregates and their use. The first step in determining the ideal replacement ratio is to perform a compressive strength test on a 150 mm × 150 mm × 150 mm cube. Over the course of 28 days, steel slag replaced coarse aggregate at levels of 20%, 0%, 60%, and 80%.
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1. Introduction. Natural crushed rocks or stones are commonly used as coarse aggregates in the production of concrete. Various types of natural rocks (e.g., limestone [], basalt [], and gravel []) have been employed in the concrete industry based on local geological circumstances.However, increasing construction demand and rapid …
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The present study focuses on preparation of geopolymer coarse aggregate (GCA) with optimum molarity of alkaline activator solution utilizing fly ash (FA) and iron ore tailing (IOT) waste.
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To decrease the energy consumption in grinding coarse iron ore particles, the preliminary processing of run-of-mine (ROM) iron ore has become necessary to facilitate the subsequent upgrading and purification [11,12]. Gravity separation is an alternative approach to improve the quality of ROM iron ore by discharging waste gangue.
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Abstract. The goal of this experimental study is to produce fly ash (FA)-based coarse aggregates by adding iron ore tailings (IOT) to the FA-based precursor as an additional mix component. The involvement of different types of binders—influential factors of both pelletization and geopolymerization that govern the production of FA-based …
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Impact tests were conducted using a specially made drop hammer impact device on concrete specimens (C60–C90) containing lean iron ore from mine waste as coarse aggregate to realize enhanced ...
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This paper discusses the utilization of iron ore tailing aggregates (IOTA) as a replacement for normal aggregates (NA) in dam concrete for hydraulic engineering applications. ... Concrete containing low-sulphide waste rocks as fine and coarse aggregates: preliminary assessment of materials. J. Clean. Prod., 211 ...
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The crushed particle size of the lean iron ore coarse aggregate was 4.75–25 mm, thereby conforming to the requirements for continuous gradation; the physical and mechanical properties of the lean iron ore coarse aggregate are compared in Table 1 against the various specifications for coarse aggregates. The data in the table indicate …
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This has resulted in an acute shortage of fine as well as coarse aggregates, obligating to explore the replacement for these materials without compromising the quality, environmental and economic factors. ... M20 grade of concrete was produced by complete replacing fine aggregate by Iron ore tailings, and GGBS as partial substitute to cement …
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The present study focuses on preparation of geopolymer coarse aggregate (GCA) with optimum molarity of alkaline activator solution utilizing fly ash (FA) and iron ore tailing (IOT) waste. Further, concrete was produced utilizing different proportion of GCA with replacement of NCA. Slump cone, compaction factor and Vee-bee consistometer …
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Coarse aggregate or crushed stone with a particle size of between 5 and 25 mm has been utilized in the literature as coarse aggregate in concrete production. The coarse aggregate content ranged between 0 and 1253.75 kg per cubic meter, with a median of 909.38 kg per cubic meter, a variance of 115,392 kg per cubic meter, and a …
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Abstract Sustainable handling of iron ore tailings is of prime concern to all stakeholders who are into iron ore mining. This study seeks to add value to the tailings by utilising them as a replacement for aggregates in concrete. A concrete mix of grade 40 MPa was prepared in the laboratory with water–cement ratio of 0.5. The concrete were …
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3.3 Replacement for coarse aggregates . Yellishetty (2008) used iron ore waste from Goa and conducted an experimental study. In the concrete mix, 40% of coarse aggregates were replaced with iron ore tailings and concrete blocks were made for 28 days curing. It resulted in the compressive strength of 21.93MPa to that of granite …
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The present study investigates the effects of utilizing dumped waste as a practical resource for making concrete. In this regard, waste marble powder used a filler material replacing a smaller constant portion of cement, dumped iron ore tailings (IOT) were used as a partial replacement for fine aggregate in different proportions.
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as waste products of the beneficiated iron ore and the estimated stripping ratio (waste/ore ratio) of the deposit would amount to approximately 28 million tons [27]
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In the current century, urbanization and the development of the construction industry have led to the generation of construction and demolition waste (CDW), imposing pressure on ecology and the environment. This has attracted the attention of industry personnel and researchers. This work discusses the current research on recycled …
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In this sense, several studies have investigated the incorporation of different types of waste as aggregate substitutes such as: recycled tire rubber 15; iron ore waste 16; textile sludge 17 ...
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Aiming to provide a cleaner option for waste concrete after fire, the viability of using waste concrete after fire as a substitute for coarse aggregate in the production of recycled aggregate concrete (RAC) was investigated and analyzed in detail. The failure mode, stress–strain behavior, mechanical properties and microstructure of the RAC ...
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Partial replacement of coarse aggregate using waste glass in various percentages such as 10%, 15%, 20% and 30% waste glass in proportion of 90%, 85%, 80%, 75% and 70% granite. ... A study on suitability of iron ore overburden waste rock for partial replacement of coarse aggregates in concrete pavements.
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The reuse of ceramic waste and iron slag waste as a substitute for coarse aggregate in concrete has been investigated. The current option for disposal of ceramic waste is landfill and this waste is of three types, namely ceramic tiles, clay bricks, ... (i.e., smelted) from its raw ore, and it is usually a mixture of metal oxides and silicon ...
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People use artificial aggregates because they are made of materials that are good for the environment. They are made from ash, solid waste from power plants, rice husk ash, furnace slag, granite powder, iron ore slag, over-burned brickbats, and so on. Types of coarse aggregate: Fine vs Coarse Aggregate. What is the size of a fine …
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The aim of this study is to evaluate the suitability of iron ore waste as partial replacement of coarse aggregates in concrete with reference to the conventional materials. Physico-chemical properties and aggregate tests such as crushing, abrasion, impact, shape test, the specific gravity and water absorption were determined as per Standards ...
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This study focuses on the utilization of waste steel slag as a replacement for coarse aggregates in the production of steel slag aggregate concrete. The accumulation of waste slag aggregates from iron and steel companies presents a signicant environmental challenge, as most of these materials end up in landlls.
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The testing results showed that the use of recycled coarse aggregate (RCA) led to the reduction of strength of concrete, but this strength loss can be compensated by adding iron ore tailings (IOTs ...
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In this regard, waste marble powder used a filler material replacing a smaller constant portion of cement, dumped iron ore tailings (IOT) were used as a partial replacement for fine aggregate in ...
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Abstract. In this study, the potential of converting iron ore tailings (IOTs) into sustainable building materials was explored. IOTs were combined with fly ash (FA) and ground granulated blast-furnace slag (GGBFS) to prepare IOTs-based supplementary cementitious materials (SCMs). A concrete mix using IOTs-aggregate was also …
DetailsIn terms of pavement performances, the asphalt mixtures with iron tailings coarse aggregates possessed a satisfactory high-temperature performance, but its low-temperature performance and moisture ...
DetailsCorrosion of rebars and metal inclusions has always been a concern for the construction industries looking for bulk utilization of the industrial waste as alternative of natural construction material. In the present study the performance of cement mortar incorporating coalmine overburden (OB) as fine aggregate, and cement concrete …
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Notable among the alternatives are to use iron ore tailing to manufacture bricks, ceramic tiles [4], as fine aggregate in mortar, and coarse aggregate in concrete [8, 20], and to produce ...
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