Corrosion of weldments - Download as a PDF or view online for free. ... Unmixed region III. Partially melted region IV. HAZ V. Unaffected Base metal Unmixed region is a part of Fusion zone, and partially melted region is a part of HAZ It is not necessary that all these zones will be present in a welded region.for e.g. Autogenous welds do not ...

This paper reports some experimental studies on the effect of copper slag partially replacing sand on concrete performance. In this paper, an experimental work was carried out to investigate the effect of copper slag as a fine ... accelerated corrosion properties of the concrete produced by replacing sand by copper slag. Srinivasu, Usha ...

The continuous growth of industrialization causes major challenges in the disposal of extensive amounts of industrial by-products. The utilization of industrial by-products in concrete is a sustainable substitute for natural river sand and reduces the scarcity of global resources. In this intent, current research aims to utilize copper slag as an alternative to natural fine …

View PDF; Download full issue; Search ScienceDirect. Construction and Building Materials. Volume 271, 15 February 2021, 121909. Effect of copper slag fine aggregate on corrosion processes and behavior in reinforced concrete prism specimen. ... and migration. In the wetting stage of cyclic wetting and drying, dry or partially dry concrete ...

The corrosion resistance of the specimens decreases slightly with the Cr2O3 content due to the increased apparent porosity, which would result in penetration of more corrosive slag at the initial ...

Flexural strength improved with the addition of 40% copper slag; however, as copper slag concentration was elevated further, flexural strength declined. Additionally, when 1% nanosilica was added to combinations containing copper slag, the filling of holes and capillary channels, the enhancement of the concrete's mechanical and durability ...

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 ...

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 mechanical ...

Since practically mined ores contain only 0.65 % Cu [2] and the purity is declining over the years [1,2], 752 MT of copper slag was produced worldwide during the period 1999-2019 with 38 MT ...

By accessing the real time corrosion resistance of steel inside the concrete, an increase in potential and decrease in corrosion rate was observed for ground granulated blast furnace slag based ...

In order to explore the corrosion mechanism of Al2O3–C refractories in the mold flux bearing MnO, the immersion test of Al2O3–C refractories in CaO–SiO2–CaF2–MnO slag with different MnO ...

Despite the fact that several studies have been reported on the effect of copper slag replacement on the properties of Concrete, further investigations are necessary in order to obtain a …

copper slag is used as partial replacement for fine aggregate and Cement in the range of 5%, 10%, 15% and 20% by weight of sand and cement and its optimum level is to be found.

Copper slag escalate the strength of mortar and concrete and it has the potential replace about 40-50% of natural fine aggregates[6]. Chloride ingress and chloride induced corrosion of steel …

Copper slag is produced about 400.000 tons per year in Indonesia by Freeport Company and Newmont Company according to Ministry of Energy and Mineral Resources Republic Indonesia data in 2012, while two million tons of copper slag produced in Japan per year through copper refining in Shikoku [2], [3].

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 uniaxial compressive strength (UCS ...

— View PDF; Download full issue; Search ScienceDirect. Construction and Building Materials. Volume 271, 15 February 2021, 121909. Effect of copper slag fine aggregate on corrosion processes and behavior in reinforced concrete prism specimen. ... and migration. In the wetting stage of cyclic wetting and drying, dry or partially dry …

The corrosion of magnesia–chrome (MgO–Cr2O3) brick in molten MgO–Al2O3–SiO2–CaO–FetO slag has been characterized using a dynamic rotary slag corrosion testing for various test cycles ...

It indicates that, the initial corrosion rate of concrete and copper slag admixed specimens are high and after 15 days the corrosion rate was very low. Since copper slag concrete exhibits good durability characteristics, it can be used as an alternate to fine aggregate and also be utilized in cement as a raw material for making blended cements. 6.

Matte and slag phases increase the deterioration in the slag line [10]. These drawbacks make the copper industry acquire such quantities of refractory materials for the total or partial ...

DOI: 10.1016/J.JALLCOM.2019.01.314 Corpus ID: 140053132; Corrosion mechanisms of magnesia-chrome refractories in copper slag and concurrent formation of hexavalent chromium @article{Xu2019CorrosionMO, title={Corrosion mechanisms of magnesia-chrome refractories in copper slag and concurrent formation of hexavalent chromium}, …

SLAG CORROSION TEST OF REFRACTORIES Slag attack is particularly important. The structural strength of the refractory may be critically reduced by the solvent action of liquid slags. The slag attack on the refractories in contact may be in the two ways: Corrosion - It is the wear and tear of refractories caused by static chemical attack of slag.

The cement has been replaced by Copper slag accordingly in the range of 0% (without Copper slag), 5%, 10%, 15%, and 20% is one phase and sand has been replaced by Copper slag accordingly in the range of 0% (without Copper slag), 10%, 20%, 30%, 40% and 50% is second phase by weight of cement for M25 mix.

In case of corrosion by slag Z2 (containing the greatest amount of CuO x: 42%) the dark-grey grains are visible inside the slag phase of high Cu content (Fig. 14 d), which indicates copper was present most likely in cuprite solid solution phase. Copper (II) oxide is stable in the air up to 1026 °C, while at a higher temperature it decomposes ...

ABSTRACT: In this research work Copper slag is partially used as fine aggregate to produce concrete. Sustainability and resource efficiency are becoming increasing important issues. …

maximum for the mix containing 30% of copper slag as fine aggregates. The concrete with 45% of copper slag would exhibit better durability over mix containing 30% of copper slag. Fig 4: Sorptivity of trial mixes 5. CONCLUSIONS 1. Copper slag is smooth and shiny. Hence, workability enhances with increased replacement levels. 2.

The 40 % copper slag replacement shows a higher compressive strength and tensile strength at 28 days and 56 days for (C25/30) and (C30/37) mixes [12].The combination of fly ash, copper slag, and ...

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

An experiment was conducted to investigate the strength and durability properties of concrete having copper slag as a partial replacement of sand (fine aggregate) and results have been …

As time progressed, the slag corrosion zone in the SiC-Si 3 N 4 bricks expanded. The maximum corrosion depths observed were as follows: 0 μm at 1 h, 83.21 μm at 3 h, 162.05 μm at 5 h, 256.58 μm at 7 h, and 335.32 μm at 9 h.