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Proven markets for slag can be found in construction of roads and pavements, blasting abrasive, cement and concrete as well as river and road …
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Copper slags have been used as abrasives (polishing and cleaning) for metallic structures [30, 31] and mainly in the building industry: concrete manufactured with copper slag [32]; copper slags as ...
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Brindha et al. [35] explored the durability of copper slag-based concrete as a replacement for sand up to 50% and determined the optimum level of replacement was 40% copper slag in place of ...
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Copper slag (CS) Copper slag (CS) is a by-product from matte smelting and refining of copper [14]. Production of one ton of copper approximately generates 2.2–3 tons of CS. Consequently, annually about 24.6 million tons of CS is produced worldwide. CS has been widely used as railroad ballast abrasive tools, roofing granules, cement and ...
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A large number of studies have been performed on the application of copper slag in concrete: as a substitute for cement, i.e. in the production of cement clinker [11,12], and as partial or ...
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Onuaguluchi and Eren (2012) studied on the properties of copper tailing when used as a potential additive in cement mortar and concrete. In the case of copper tailing mortars, pre wetted tailings at 5% addition level reduced the negative effects of dry copper and proved to be the best reuse approach. ... Application of copper slag and discarded ...
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The study evaluates the feasibility of using CMT as filler additives in cement mortar, which is a waste product generated during copper mining and typically disposed off landfills or tailings dams. ... Cyclically loaded copper slag admixed reinforced concrete beams with cement partially replaced with fly ash. Materials, 15 (2022), 10.3390 ...
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It will also save 170,000 tons of CO2 as a reactive mineral additive in blended cement and another 116,000 tons of CO2 as a substitute for cement and crushed stone in concrete.
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Similar copper slags are also valuable options to be used as concrete ingredients. Copper slag (CPS) is a metallurgical waste product that is created …
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Effects of different additives such as Portland cement, FA, and RHA were studied. • Copper slag and different additives improved the durability and mechanical properties of CIR mixes. • Recycled concrete aggregate was found to be acceptable type of aggregate as a substitute for aggregate in CIR mixtures. •
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The addition of copper oxide in cement raw mix is known to improve its burnability, with increase in formation of the alite phase. Copper slag, a by-product of the metallurgical industry, containing copper oxide can therefore be a useful additive in the manufacture of cement, particularly for hard burning raw mixes. This paper presents a …
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Copper slag was obtained from the LS-Nikko Copper Inc., South Korea. Copper slag and silica sand were used as aggregates. Table 1 shows the results of oxide analyses for Portland cement, copper slag, and silica sand, which were conducted using X-ray. Tests of flowability and strength. Fig. 4 shows the flowability test results of fresh …
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A standard w/b ratio of 0.485 according to the ASTM C 109 ([22] guidelines was used for preparing mixtures incorporating 0%, 5% and 10% copper tailings by mass of cement as a mortar additive.These mixtures were identified as C0 for control, C5 for 5%, C5–PW for 5% addition of pre-wetted copper tailings and C10 for 10% addition level.
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This study explores the potential of copper slag and cement as additives in soil stabilization. Copper slag is a by-product of the copper smelting process, and its vast …
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The Fe3O4 and Fe2SiO4 in copper slag were successfully reduced to metallic iron by coal-based direct reduction. Under the best reduction conditions of 1300 °C reduction temperature, 30 min reduction time, 35 wt.% coal dosage, and 20 wt.% CaO dosage (0.75 binary basicity), the Fe grade of obtained iron concentration achieved …
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In Table 3, both iron-ore slag and copper slag have high contents of Fe, Si, Al and Ca elements, which can greatly enhance the compressive properties of cement and improve its stability [34]. According to XRD phase analysis ( Fig. 4 (a), (b), (c)), it can be found that the main component in iron-ore slag is Fe 2 O 3, and the main component in ...
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2. Slump cone value for the copper slag concrete increases with increasing in the percentage of copper slag so the concrete was not workable. 3. Compaction factor value of copper slag concrete decreases with increase in the percentage of copper slag. 4. The compressive strength of concrete is maximum at 20% replacement of copper slag
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The mixes containing steel and Fig. 10 System boundary description for cement, fine aggregate, copper slag and steel slag for the present study [46,[64][65][66] [67] 69] copper slag are economical ...
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Copper slag is another type of slag and is a by-product of copper extraction, with Al 2 O 3 and Fe 2 O 3 percentages at 2.87% and 38.37%, respectively . ... In the utilization of HDPE as a concrete additive, a concrete sample containing HDPE and a natural aggregate had a ...
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The copper slag, obtained as a by-product from the smelting and refinery process of copper, was used as a stabilization agent in this study. In order to stimulate the pozzolanic activity of the copper slag, hydrated lime powder was used as a …
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Table 1 shows the results of oxide analyses for Portland cement, copper slag, and silica sand, which were conducted using X-ray fluorescence (XRF). The specific gravity of Portland cement was measured by following the ASTM C 188 (ASTM, 2009); the specific gravities, water absorptions, and fineness moduli of aggregates were obtained …
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Globally a large volume of copper slag (Table 1) is produced which can be approximated to 2.2 tons of slag generated for every ton of copper produced [9].The annual worldwide production of slag is approximately 24.6 million tons in the early century [6, 7] and increasing at a rate of 11% per year [6].Table 1 illustrates the magnitude of …
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Furthermore, basic oxygen furnace or electric arc furnace steel slags, copper slag, lead–zinc slag, and the use of ... 0–30% Cement Replacement: With the use of additives at a certain level, the early age strength of concretes with steel slag cement was sufficient, while samples of 28 days and above cured samples performed better ...
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The chemical composition of copper slag varies with the type of furnace. The typical composition of smelting slags is Fe (as FeO, Fe 3 O 4) 30–40%; SiO 2 35–40%; Al 2 O 3 up to 10%; and CaO up to 10%. The density of copper slag varies between 3.16 and 3.87 g/cm 3 based on the amount of iron content. The average specific gravity of copper ...
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The effects of copper tailings as an additive, on some durability properties of cement mixtures were investigated. In each mixture, copper tailings addition levels by mass were 0%, 5% and 10% ...
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Copper slag. Copper slag grains have a fineness modulus of 3.4. In order to use copper slag as a mineral admixture it was necessary to carry out an experimental study associating grinding time, average diameter and pozzolanic activity assessed in mortars [].Based on this study, it was verified that 60 min was the optimal grinding time in …
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A constant percentage of marble dust powder was added to replace the binder material (cement). Additionally, copper slag replaced 10%, 20%, and 30% of the fine aggregate, and recycled aggregate replaced 10%, 20%, and 30% of the coarse aggregate. According to the M-30 standard, water/cement ratios in concrete mixtures …
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The copper-nickel slag was subjected to planetary ball milling. SS was dissolved in water and poured into a slurry mixer, together with copper-nickel slag powder. The materials were stirred and poured into a cement mold (20 mm × 20 mm × 20 mm), which was placed on a cement mortar shaking table.
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contain a higher content of amorphous silica which is a valuable additive in Portland cement manufacturing. Copper slag is +2a form of olivine, a magnesium, iron and silicate mineral with the formula (Mg, Fe+2) 2 SiO 4. The production of nano silica from the dissolution of olivine is an economic option when
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The use of mineral additives in the cement is related to the fact that the use of the most expensive component of cement—Portland cement clinker—is limited. The purpose of the article is a preliminary evaluation of the suitability of slag from the municipal solid waste incineration plant for its use as a replacement of cement.
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