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 ...
— Download full-text PDF Read full-text. Download full-text PDF ... The slag can partially decompose forming Fe-rich spinel of the ... Corrosion by copper slag was studied in sintered samples ...
— Request PDF | Corrosion mechanisms of magnesia-chrome refractories in copper slag and concurrent formation of hexavalent chromium | Magnesia-chrome refractories have been essential materials for ...
— A study concluded that the inclusion of slag (30–50%) increased the workability of concrete mixes; although a higher slag concentration led to larger improvements . Higher slag fineness had no discernible impact on workability, and the authors of found that the workability of mortar decreased as GGBS surface area increased.
The corrosion resistances of different refractory materials to the slag and changes of the morphologies after the high temperature experiments were analysed and compared. The present studies will lead to the development and applications of Cr-free refractories in copper industry and reduce the potential hazards to the environment and cost of ...
— Download full-text PDF Read full-text. ... D., Baskaran, T. and Nagan, S. (2010). "Assessment of Corrosion and Durability ... Copper slag is generated when copper and nickel ores are recovered ...
— The slag in pyrometallurgical operations plays a major role affecting the life of furnace refractory. As such, comprehensive mineralogical and chemical slag examination, physical property determination including the slag melting point or liquidus, and viscosity are necessary for precise understanding of a slag. At the RHI Technology Center Leoben, …
— A rapid chloride ion migration test and potential corrosion analysis showed that copper slag aggregate concrete's initial density and corrosion resistance were higher than those of natural ...
— The rotating method is carried out to investigate the effects of La 2 O 3 content (0–4 wt%) on the viscosity of copper smelting slag at high temperatures, the apparent activation energy is evaluated according to the Arrhenius equation and the structural characterization of this quenched slag is characterized by Raman …
— View PDF; Download full issue; Search ScienceDirect. Construction and Building Materials. Volume 255, 20 September 2020, 119265. Influence of copper slag on corrosion behavior of horizontal steel bars in reinforced concrete column specimen due to chloride-induced corrosion ... Copper slag on the hydration of up to 15% cement-based …
The world copper production is currently about 24.6 million tons (International Copper Study Group) and it is estimated that for every ton of copper produced, about 2.2tons of copper slag is generated as a waste. D. Copper slag Origin Copper slag is a by-product of copper extraction by smelting.
Request PDF | On Feb 1, 2024, Swetapadma Panda and others published Bond strength and corrosion behavior of rebar embedded in copper slag concrete composites | Find, read and cite all the research ...
— The main objective of this study was to investigate the effects of copper slag on the ingress of corrosive substances, including chloride ions and water and the …
— The safe and efficient treatment of copper slag (CS) is an important aspect of the circular economy and green development. In order to reduce the negative environmental impact, CS is used as a precursor to substitute different contents of ground granulated blast furnace slag (GGBS) in the manufacturing of alkali-activated materials (AAM)) in this study.
— The work presents corrosion of direct-bonded MgO-Cr refractory by three types of PbO-rich copper slags. Pellet test, contact corrosion test and hot stage microscopy test enabled to study corrosion ...
— Abstract. Global copper slag (CS) emissions reached 57.2 million tons in 2021. Despite the increasing reuse of CS, the treatment of CS is still dominated by …
— As a result, an effort is made to partially replace fine aggregate in the construction industry with copper slag. The current paper examines the laboratory testing of various concrete mixes (Mix 20, Mix 40, and Mix 60) containing copper slag waste as a partial replacement for fine aggregate (0% to ). The fresh properties and …
— Waste recycling and reuse is an important component of sustainability. Extensive research is being conducted to address this issue by incorporating industrial by-product such as steel slag, copper slag, fly ash, ferro-chrome slag, and so on into the construction industry. Steel slag, which is mostly calcium carbonate, is created as a by …
2.1.4 Copper slag: Copper slag is an industrial by-product material produced from the process of manufacturing copper. Copper slag used in this work was brought from Sterlite Industries Ltd (SIL), Kolkata, India. 2.1.5 Ground Granulated Blast furnace Slag: GGBS is a waste industrial by-product from the blast furnaces used to make iron.
— Later in the chapter corrosion of carbon steel weldments that are more often called preferential weldment corrosion would be discussed. The primary reasons for this type of corrosion are carefully elaborated on whether it's induced by galvanic corrosion or it's related to the composition and microstructure differences associated with the heat …
— Both compressive strength and flexural strength are increased due to the high toughness of copper slag [9]. Therefore, a study about the durability performance of concrete using copper slag as a replacement of fine aggregate has been developed in these recent years. Copper slag is denser than ordinary natural aggregates with a density of …
— For each ton of copper metal produced worldwide, about 2.2–3.0 tons of slag is produced, estimated to be approximately 40 million tons of slag generation annually (J. P. Wang & Erdenebold, 2020), with the content of iron reaching 45%; the copper slag has potential to produce approximately 26.8 million tons of Fe annually (Heo et al., 2013). A ...
— In order to study the influence of freeze–thaw cycles on chloride ion corrosion resistance of RPC with copper slag (CS) instead of quartz sand (QS), the 28d …
— Request PDF | Corrosion mechanism of magnesia-chrome refractory bricks with FetO-SiO2-Cr2O3 copper converter slag | The paper investigates the effect of Cr2O3 on the resistance of magnesia-chrome ...
DOI: 10.1016/j.jclepro.2023.140283 Corpus ID: 266526178; The potential of copper slag as a precursor for partially substituting blast furnace slag to prepare alkali-activated materials
In order to achieve single recovery of Fe, Cu and Si in copper slag and deep removal of impurities in products, the activated reduction combining directional oxidation are adopted to improve the separation limit of target components, which mineral constituent as well as chemical composition at different stages are investigated through XRD and chemical …
— This study investigates the interaction effects of silica fume and ground granulated blast furnace slag on the behavior of normal and high-strength concrete …
— This study is focused on assessing the bond characteristics and corrosion behavior of reinforcing bars embedded in copper slag concrete composites (CSCC). RILEM beams were prepared using CSCC with varying replacement percentages of copper slag (CS), and tests were conducted following RILEM-FIP-CEB (1973). The corrosion …
of the concrete with copper slag is lower than the control (no copper slag) mixes [1726–, 2031, ]. Very few papers assessed workability of the copper-slag concrete. Gener-ally it was found that copper slag may increase workabil-ity of concrete mixes (e.g. [1731–]) but most of these 20, papers used superplasticizers to enhance workability of
— Copper slag has been substituted for fine aggregate in various quantities ranging from 10% to 50% in the concrete compositions. In total, six concrete mix proportions have been produced, for which the parameters like water absorption and chloride permeability were evaluated. ... The effect of copper slag on strength and …
— Formation of hexavalent chromium (Cr(VI)) has been a major concern despite its admirable corrosion resistance in copper slag. Magnesia-chrome refractory specimens (9, 12, 15 and 18 wt% Cr 2 O 3) with addition of Al 2 O 3 and TiO 2 were fabricated and subsequent corrosion tests using copper slag was conducted in air. The …
— The control concrete specimens in this study were prepared using ordinary Portland cement (OPC) of 43-grade, adhering to IS 8112 [70], equivalent to Type-I Portland cement according to ASTM C150/C150M [71].The natural river sand (NS), meeting the criteria of Specification E11 of ASTM C33/C33M [72], and natural coarse aggregates of …
— Pitting corrosion in seawater is one of the most difficult forms of corrosion to identify and control. A workhorse material for marine applications, 316L stainless steel (316L SS) is known to ...
— Download full-text PDF Read full-text. ... optimal process parameters in corrosion. inhibition of austenitic stainless steel (Type ... Fine aggregate were partially replaced with copper slag at ...
— Copper slag (CPS) is a large amount of waste material produced during the manufacture of copper. The disposal of this waste material becomes a problem for environmental concerns. Therefore, it is necessary to explore feasible alternate disposal options. They may also be utilized in concrete manufacturing to cut down on the usage …
Fayalite is the main phase of copper slag and a type of Fe silicate glass that is composed of a polymerized network of silicate tetrahedrons, in which SiO 2 and FeO are generally considered as network formers and modifiers, respectively. The structure of fayalite is shown in Fig. 13 [107].In iron silicate glass, O 2− exists in the form of bridging and non …
— A series of tests were performed to assess the influence of copper slag fine aggregates (CUS) on the corrosion behavior of horizontal steel bars in reinforced …
— The penetration and corrosion resistance to copper and anode slag of six magnesia–chromite and six chrome-free refractory brick types were tested using static finger tests at a typical copper ...
Suresh Reddy etal. (2013) studied the concrete made of copper slag replacing sand up to 50% are used to study the strength parameters, compressive strength, split tensile strength and flexural strength of both M30 and M40 grade of concrete mixes. Sand was replaced with copper slag in proportions of 0%, 10%, 20%, 30%, 40% and 50%.
— However, it should be noted that due to the entry of sulfur-containing substances in copper slag, the corrosion of scrubber needs attention (Sarkar et al., 2007). In copper slag, the phases of Pb element …
