In recent years, the use of natural fibers in concrete has gained considerable attention due to their potential as a sustainable alternative to conventional steel reinforcements. This paper investigates the strength performance of natural fiber-reinforced recycled aggregate concrete using copper slag as a replacement for fine aggregate. …
A recent review [47] shows that copper slag contains high levels of iron oxide and has low grindability compared to conventional raw materials for cement production. …
The use of copper slag in cement and concrete provides potential environmental as well as economic benefits for all related industries, particularly in areas where a considerable amount of copper ...
Zain et al. (2004) applied blasted copper slag as an additive, replacing Portland cement in mortar, in order to study a safe route for disposal of this sub-product. The replacement of cement by this residue increased the setting time and slightly reduced compressive strength in mortars, finding that the optimal amount of replacement was …
DOI: 10.1016/j.fuel.2024.130875 Corpus ID: 266828541; Negative effect of industrial waste residue additives (IWRA) on NO reduction by selective non-catalytic reduction (SNCR) in cement plant: A comparison between copper slag and iron-ore slag
When the concentration of NH 3 is 325 ppm, the presence of iron-ore slag, copper slag and raw meal do have a certain degree of promoting effect on the gas–solid NH 3 oxidation, and the catalytic activity of copper slag is the strongest, followed by iron-ore slag and raw meal. The trends of these three curves are consistent, as temperatures ...
For this experimental investigation, M40 grade concrete is considered and designed as per Indian standard IS:10262-2019 [29].Totally, eight mixes were prepared of which, six mixes are comprised of waste copper slag in varied percentages like 0%, 20%, 40%, 60%, 80%, and for mixes CS0, CS20, CS40, CS60, CS80, and CS100 …
The type and amount of additives play a significant role in making more durable mixes. Cement is considered an effective additive that makes the mix moisture resistant, and rice husk ash has ...
Copper slag and cement's impacts on stabilized soils' compaction, strength, permeability, and durability are examined. The paper also discusses laboratory and field …
using high carbon fly ash and copper slag. Greater than 50% replacement of copper slag improved the electrical conductivity of concrete [1]. Copper slag is a by-product obtained from the copper smelting industries [2]. The amount of slag produced dur-ing the production of copper is huge, in the range of three times that of the copper ...
Copper slag and cement's impacts on stabilized soils' compaction, strength, permeability, and durability are examined. The paper also discusses laboratory and field investigations on copper slag and cement soil stabilizers. Copper slag and cement improve soil engineering qualities, including load-bearing capacity, settling, and erosion resistance.
The CMS of the mortar improves gradually when the curing period is increased with the addition of mineral additives. When slag is used in place of cement, …
Concrete permeability tests were conducted (start permeating pressure 1.73 MPa, compared to 1.0MPa for OPC) as well as hydration heat (28.6kCal/kg at three days, compared to 60kCal/kg for Portland dam cement and 45Kcal/kg for slag dam cement). Steel-slag cement also exhibits high resistance to abrasion and an application in road …
The increasing use of copper and its allied materials across many industries is ramping up copper mining activities in many countries, and proper management and disposal of huge volumes of copper mine tailings arising thereof is a huge challenge. Sungun mine is the biggest open-cast copper mine in the northwest of Iran. …
Moura et al. 11 employed copper slag as an additive in concrete, and they observed increased mechanical strength, reduced porosity and carbonation for concrete samples. Al-Jabri et al. 12 also submitted that the substitution of sand with copper slag improved the strength and durability properties of high strength concrete.
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.
The copper smelting slag (CSS) samples were from a smelter in Hubei Province after the reuse of matte-making smelting slag. It was oven dried at 45 °C and ground through a 0.075 mm sieve and an X-ray fluorescence spectrometer was used to examine the CSS's chemical makeup (Malvern Panalytical, The Netherlands).
Copper slag is an industrial waste discharged in the process of smelting copper. At present, copper is the second largest non-ferrous metal material in the world in terms of annual output and consumption [12], [13]. The global annual output of copper slag reaches as high as 70 million tons [14], but its utilization rate remains very low.
The binders used in preparing mortar mixtures were Portland slag cement CEM III/A (Class 32.5N) and copper tailings obtained at various depths from deposits at an abandoned processing facility at Lefke, Cyprus. The tailing samples were air dried and sieved with a 600 μm sieve before usage.
There is almost 6.67% increase in compressive strength of concrete compared to control mixture (i.e. sand) at 40% copper slag replacement at 28 days of cuirng.Mixture containing 50% copper slag gave higher split tensile strength of concrete, almost 19.3% increase compared to control mixture at 28 days of curing.For cement mortars, all ...
In this work, a 52.5 R Portland cement (PC) is used; this cement was chosen as it is free of any additives; that is to say, composed of clinker between 95%– …
Mussel shell ash (MSA) and ground granulated blast furnace slag (GGBS) has similar chemical and physical properties as ordinary Portland cement (OPC) which makes it applicable to replace cement in concrete. Currently, the research on combination of GGBS and MSA as...
Ground-granulated blast-furnace slag (GGBFS) is produced by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water, to produce a granular product that is then dried and ground into a fine powder. ... When added to concrete, GGBFS enhances a range of performance characteristics such as the reduction of ...
Onuaguluchi did experiments on copper tailings as a potential additive in concrete [10]. Wu et al. tested copper slag reinforced concrete under dynamic compression [11] and also achieved the ...
The results indicate that copper slag concrete has excellent resistance to weight and strength loss at an elevated temperature of 2000 C, 4000 C compared to normal concrete however at 6000 C ...
Slag has angular morphology as shown in Fig. 2 (c). Slag is a commonly used SCM having particle sizes less than 45 μm and surface area ranging from 400 to 600 m 2 /kg (El-Chabib, 2020). Similar to blast furnace slag, copper slag (CS) is a by-product obtained from smelting of copper and its refining industry (Wang, 2016).
According to the results, the mixture containing 5% cement by-pass dust + 95% cement had a maximum 90-day compressive strength of 42 MPa as opposed to 1.5 percentage cement by-pass dust + 13.5 percentage Copper slag + 85 percentage cement, which had a maximum 90-day compressive strength of 40 MPa [28], [29], [30], [31].
Partial replacement of sand by Copper Slag in concrete is allowed up to 10% by mass. Copper Slag has similar properties to sand, and is a very effective substitute during monsoon (rainy) season. Further, Copper Slag is also used in the production of cement, mortar and concrete as a raw material for clinker, cement replacement, coarse and fine
4.2 Cement additive. Copper slag can also be used as a pozzolanic material in mixed cement by directly replacing a portion of ordinary Portland cement. The effects of …
11.4 Construction Methodology for Bituminous Mixes with Copper Slag 31 12. Quality Control Tests 31 12.1 Copper Slag Embankment and Subgrade 31 12.2 Copper Slag GSB, Cement Stabilised Base/Sub base, WMM and 31 Bituminous Mixes 13. Environmental Aspects 31 14. Typical Cross Section of Rural Road with Copper Slag …
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.
Semantic Scholar extracted view of "Slag use in cement manufacture and cementitious applications" by G. Wang ... A steel-making slag (basic oxygen furnace) obtained from the Kardemir Steelworks was modified to be used as a clinker additive in the cement industry. This study ... Up to 15% by weight of copper slag was used as a portland cement ...
At present, the researchers' conclusion is that the "SiGS concrete" is strong enough to be used for the same purposes as concrete containing pure cement without any slag additives. "Its early strength is lower, but after 28 days this increases so that it becomes just as strong as so-called environmental cement— at least, in the case of the ...
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 …
The molten slag is later cooled and granulated. Steel slag may also be referred to as steel furnace slag, steel making slag, steel converter slag, and in this chapter may simply be referred to as slag. ... as an additive to cement, and in the construction of roads (Yi et al., 2012). However, leaching of metals from slag poses an environmental ...
They make using of high quality copper slag blasting media to enhance the quality of copper slag blasting. We have maintained the standard of highest quality level in the best possible manner. ... Additive to make high density concrete for nuclear shielding (40/120) Paints and Coatings; Blast Cleaning; Asphault anti-skid additive (30/60) Slag ...
A similar experiment (Imran et al., 2019) replaced cement with 0–20% of eggshell and copper slag (CS). The studied discovered that 10% of both material replacement gave maximum compressive strength and splitting strength. The increase of splitting strength was 14.7% at optimal value.
1. Introduction. Copper slag (CS) is a nonferrous material by-product from the production of copper in metal form. The most common form found of copper slag is a dark color, a brittle stone that is presented in the most diverse sizes [1], which can vary in …