Lead Slag Aggregate
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- Lead Slag Aggregate
Request PDF | Effect of hematite and iron slag as aggregate replacement on thermal, mechanical, and gamma-radiation shielding properties of concrete | Improving concrete shielding properties for ...
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The study results suggest that the use of EAF steel slag aggregate in combination with a low-heat cement with a high content of blast furnace slag can significantly lower the temperature, reduce the environmental impact, and increase the sustainability potential of mass concrete, while at the same time providing sufficient workability and ...
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Application of Steel Slag as an Aggregate in Concrete Production: A Review. August 2023; Materials 16(17):5841; ... resources and lead to severe environmental thr eats [8], as shown in Figure 1.
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This paper discusses a sustainable way to prepare construction materials from metallurgical slags. Steel slag, copper slag, lead-zinc slag, and electric furnace ferronickel slag are the most common metallurgical slags that could be used as supplementary cementitious materials (SCMs) and aggregates. However, they have some adverse effects that could …
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PARTIAL REPLACEMENT OF FINE AGGREGATE WITH STEEL SLAG Mr. Tushar Saxena*1, Girish Kabra*2, Kunal Chalke*3, Aishwary Singh Thakur*4, Arjun Dewangan*5, Sumeet Nagdev*6 ... Extraction of river sand in a huge amount will lead to lowering of water level and erosion of river bed. Concrete is the most commonly used material in construction and for the ...
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that steel slag aggregate surpasses natural aggregate by 27.72% in aggregate abrasion test, 31.41% in aggregate impact value test, 1.94% in ... which can lead to their breakdown and failure. The test is performed in accordance with IS Code 2386: (part 4) 1963. If the result is satisfactory, the aggregates are used in pavement, if not, they are
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Lead slag can be used as an aggregate in pavement bases, as well as in subbases. Buzatu et al. (2015) analyzed the geometrical, physical, and mechanical properties of lead slag. The lead …
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The performance of products arising from the stabilization/solidification of slags from lead batteries recycle into a Portland cement matrix has been evaluated not only in order to get a...
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Replacing all or some portion of natural aggregates with steel slag would lead to considerable environmental benefits. Steel slag aggregate generally exhibit a propensity to expand hence steel slag aggregates are generally not used in concrete making. However, use of blended cement concrete is reported to reduce the expansion of the concrete.
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Comprehensive Analysis of Steel Slag as Aggregate for Road Construction: Experimental Testing and Environmental Impact Assessment ... When slag hydrates, its volume increases, and this swelling can lead to structural problems. This hydration expansion of BOF slag limits its engineering applications. For this reason, several authors have ...
WhatsApp: +86 18221755073However, stacking too many modules can lead to overfitting of the training data, thereby reducing the generalizability of the results to new data. Additionally, increasing the number of parameters can cause training instability and optimization challenges. ... As shown in Fig. 18, when the replacement rate of steel slag aggregate is 50 %, the ...
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The first part of the paper outlines the impact of primary lead slag on the compressive strength and gamma radiation shielding properties of concrete.The presence of the primary lead slag as aggregate substituent in concrete, along with steel shot and barite, enhances the density and shielding efficiency against gamma radiation for Ir 192, Cs 137, Co 60 …
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Construction materials are dealing with new challenges due to increased resource exploitation by globalized infrastructure. Research has consequently documented various waste management techniques that are focused on environmentally sustainable principles. The coarse steel slag aggregate (CSSA) can be reused as aggregate in cement concrete mixes. Hence, …
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Reuse of waste is one of the main principles of sustainable development and circular economy. Secondary alkaline lead slag is a hazardous waste generated in the recycling process of lead …
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steel slag aggregate which generate expansion force to concrete (Figure 3). The disruption ratio (R) is then used in evaluation of the expansion potential. The next question is to determine the expansion force generated by a single steel slag particle. Figure 2. Unstable steel slag aggregate particle(s) contributes the failure of concrete
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The paper reports on some experimental results obtained from the production of concretes containing granulated slag of lead and zinc industry as sand replacement mixed in different proportions. Granulated slag is substituted for raw sand, partly or totally. ... Demirboga and Gül (2006) studied the use of blast furnace slag aggregate (BFSA) to ...
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In this study, the effects of replacing fine aggregate by granulated lead/zinc slag waste (GLZSW) on the thickness of concrete shields against X-ray radiation and on the compressive strength of concrete have been investigated. The fine aggregate was substituted by GLZSW in four percentages: 25%, 50%, 75%, and (by weight). The first aim of the …
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As a kind of novel exploratory attempt, relevant staff from industrial battery waste of development used battery-smelting slag of a company from Colombia to provide lead slag as aggregate of asphalt mixture, and they found that the lead quadratic residue could be used in the asphalt mixture .
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This is mainly due to lead-slag aggregate has the highest iron content, and the iron has a suitable scattering cross-section. The results also indicated the removal of the cross-section (ΣR) of the fast neutrons for the heavy concrete mixes increase by 9% and 10% upon replacing fine sand by the fine aggregates of lead-slag and magnetite ...
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Secondary lead slag, a waste product from battery smelting using CaCO 3 as flux, ... aggregate slag (A) was that passing sieve no. 4 and used to partially replace crushed limestone aggregate. The cement used for comparison was the OPC commercially produced in Thailand. 2.2. Characterization of slag
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Even the effect of lead slag as fine aggregate on the mechanical properties of concretes varies in different research: according to Mosavinezhad et al., results of the compressive strength of lead slag specimens at 28 days of curing "was 1% lower than those of the conventional concretes".
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Thermal energy storage (TES) system has been widely employed in concentrated solar power (CSP) plants to ensure the system efficiency. With excellent thermal characteristics, electrolytic copper powder (ECP), graphene oxide (GO) and lead-smelter slag (LSS) aggregate – a mining waste material, have been utilised in this study, aiming to fabricate metallurgical geopolymer …
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Certain researchers have affirmed that lead slag can be used successfully as an aggregate for road construction and concrete owing to its favorable physical and mechanical …
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The presence of the primary lead slag as aggregate substituent in concrete, along with steel shot and barite, enhances the density and shielding efficiency against gamma radiation for Ir192, Cs137, Co60 radioactive elements with average gamma energies of 0.37 MeV, 0.662 MeV and 1.25 MeV. The results showed that even the presence of primary ...
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Lead slag and serpentine aggregates improve the performance of concrete against gamma rays by improving damping and reducing radiation penetration. The LAC of the sample containing coarse serpentine and fine serpentine has increased significantly compared to the control concrete, and it means that serpentine aggregates can also be ...
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Mechanical, Durability, and Gamma Ray Shielding Characteristics of Heavyweight Concrete Containing Serpentine Aggregates and Lead Waste Slag January 2023 Advances in Civil Engineering 2023(2):1-11
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Abstract: In this study, the effects of replacing fine aggregate by granulated lead/zinc slag waste (GLZSW) on the thickness of concrete shields against X-ray radiation and on the compressive strength of concrete have been investigated. The fine aggregate was substituted by GLZSW in four percentages: 25%, 50%, 75%, and (by
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The results show how the utilization of BOF slag as coarse aggregate in road construction improves the technical performance of asphalt mixtures (Marshall Quotient 4.9 vs. 6.6). Moreover, the introduction of BOF slag into the asphalt mix as a coarse aggregate, instead of limestone, causes a carbon emissions reduction rate of more than 14%.
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Lead slag is a black granular material similar to sand having a high specific gravity of 2.65–3.79 g/cm 3, due to the high content of iron oxide.
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Morrison et al. (2003) [19] presented how the usage of ISF slag as fine aggregate retards the cement hydration process. This was accomplished by monitoring temperature changes of concrete specimens for period of 10 days. ... Use of Granulated Slag from Lead and Zinc Processing in Concrete Technology. Cem. Concr. Res., 26 (1996), pp. 1381-1388 ...
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Lead slag is produced by the primary and secondary lead industry. The large amount of lead slag discharge causes environmental problems. Reducing the toxicity and increasing …
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On the negative side, mixes showed reduced resistance to abrasion when ISF slag was used as fine aggregate even at 10% utilisation. Hence from this study it can be concluded that ISF slag can be safely used to replace 50% of fine aggregate to produce durable concrete with appropriate mechanical performance. ... The speciation of zinc, lead ...
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Secondary lead slag, a waste product from battery smelting using CaCO3 as flux, has been investigated for its use as an admixture and/or aggregate in the production of concrete blocks.
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Therefore, 40 steel slag coarse aggregate particles were selected from the midsection of each region, resulting in a total of 120 samples, to ensure a uniform distribution of the analyzed coarse aggregates. The steel slag coarse aggregate on the outer layer of the specimen was excluded due to its lack of contact with the outside world. Fig. 5
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SEM images of the paste containing CS aggregate . 4.3. Lead-Zinc Slag. Saca et al. found that the strength of hardened paste decreased after replacing cement clinker with LZS. When the …
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In this study steel slag aggregate processed by several aging process was comparatively satisfied with fundamental properties as concrete aggregate, which are specific gravity, absorption, unit ...
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