Mechanical Properties and Durability of Concrete with Water Cooled Copper Slag Aggregate

Mavroulidou, Maria

doi:10.1007/s12649-016-9819-3

Cited by 57 publications

(13 citation statements)

References 22 publications

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“…Examining the compressive strength of the obtained "cement-GA" composites, we found that they had a compressive strength 15-20% higher than that of similar compositions with lightweight aggregates [7,8,11].…”

Section: Discussionmentioning

confidence: 89%

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Granular Aggregates Based on Finely Dispersed Substandard Raw Materials

et al. 2021

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It is necessary to solve the ecological problems of regions where there is large-tonnage storage of various finely dispersed materials, including technogenic ones. This article presents the results of an investigation into the possible use of substandard dispersed quartz sands to obtain effective granular aggregates, with the purpose of putting them to use in mortars and concrete. The study used standard and original experimental research methods related to the analysis and preparation of raw materials, technological tests, and the study of the properties of finished composites. Investigations were carried out to obtain composite binders in the component composition of which the use of different ratios of Portland cement and substandard quartz sands prepared in a vortex jet mill was envisaged. It was found that the obtained composite binders had high physical and mechanical characteristics, which was due to the high specific surface area and hydration activity. On the basis of composite binders and finely dispersed quartz sands (fineness from ≤0.16 mm to 1 mm), the granulation of mixtures of 36 types of component compositions was performed. The developed compositions of granular aggregates (GAs) showed the possibility of obtaining them with sufficiently high strength values in cement stone. The studies carried out make it possible to recommend finely dispersed substandard and technogenic materials for the production of GAs, which would ensure the economy of binding materials as well as contribute to the reuse of large-tonnage waste of ferrous and nonferrous metallurgy and the chemical and mining industries.

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Section: Discussionmentioning

confidence: 89%

“…Due to the lack of building materials, construction companies, mining companies and other enterprises are forced to use local and man-made raw materials for production. The use of a local raw materials construction cluster does not always allow for environmentally and economically beneficial construction [7,8].…”

Section: Introductionmentioning

confidence: 99%

Granular Aggregates Based on Finely Dispersed Substandard Raw Materials

et al. 2021

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“…A possible reason for this could be the presence of a high amount of FeO in the glass phase. A wide range of authors also reported that the mortars with Cu slag aggregates showed limited expansion [51][52][53]. However, it is also noticed that the reason behind the limited expansion was not explicitly mentioned in these studies.…”

Section: Resistance To the Alkali-silica Reaction (Asr)mentioning

confidence: 94%

Feasibility Study on the Use of Modified Copper Slag as a Sustainable Fine Aggregate in Mortar

Sivakumar¹,

ruyaert²,

Belie³

et al. 2021

RPM

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Depending on the availability of aggregate sources pertaining to their geographic locations, the concrete industry utilizes conventional aggregates such as marine sand, dredged gravel, or crushed rocks. This method requires high energy and high processing costs for washing and grinding. The objective of this work is to use Modified Ferro silicate slag (MFS), a by-product obtained from the copper industry, as an alternative to the conventional fine aggregates found in mortar. No additional processing such as washing or grinding is required. By using the MFS slag as an aggregate in mortar or concrete, the factors of sustainability and a circular economy are enhanced. The current study focuses on the characterization of the MFS slag, including the mortar mixes with the MFS slag as a fine aggregate, and shows that the MFS slag can be a promising raw material to replace conventional aggregates in mortar. The leaching of its heavy elements such as Sb, As, Cr, Mo, Pb, and Zn was conducted well within limits (VLAREMA 4). The SEM and MIP analyses indicated that the porosity of the MFS slag mortar was higher compared to the standard aggregate mortar. Moreover, the MFS slag mortar showed acceptable resistance toward the alkali-silica reaction and carbonation.

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“…As a result of the increase in copper need, copper slag comes out as waste material (Esmaeili and Aslani 2019). As the disposal of copper slag has become a concern for Environmental Protection agencies and governments, searches for possible alternatives to this waste material have begun (Mavroulidou 2017). Copper slag is mainly rich in Fe 2 O 3 , SiO 2 and contains various other oxide types, including Al 2 O 3 , CaO and MgO (Ramanathan et al 2013;Chithra et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Basalt Fiber Reinforced Cement Composites (BFRC) Containing Waste Copper As Partial Replacement For Sand And Cement

Aeshah

Kaplan

2021

Preprint

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In this study, the use of copper slag and aggregate together with basalt fiber in cement-based composites was studied. It was aimed to contribute to the ecosystem by using copper waste, which is an environmental problem, in cement-based composites. In addition, the effect of basalt fiber on the strength and durability properties of composites was investigated. Taguchi optimization was carried out for cement-based composites. In this context, Taguchi L18 matrix was used. Copper slag was used at rates of 0, 7.5% and 15%, and copper aggregate at rates of 0, 25% and 50%. Basalt fibers of 6 and 12 mm length were used at the rates of 1%, 2% and 3%. The w/b ratios of the mixtures were chosen as 0.40, 0.50 and 0.60. Durability tests such as permeability, freeze-thaw and sulphate resistance with fresh and hardened mortar properties were performed on 18 different mixtures. In terms of the 7, 28 and 91-day flexural and compressive strength of the mixtures, the use of 1% of 6 mm long fiber in the mixtures with a w/b ratio of 0.40 provided more positive results. In terms of freeze-thaw resistance, it is necessary to use 3% of 6 mm long fiber in mixtures with 0.40 w/b. The use of 7.5% copper slag reduced the water penetration depth. The use of 15% copper slag in mixtures affected by sodium sulphate reduced the expansion values. Since the increase in the ratio of copper aggregate decreased the aggregate volume, it caused the drying shrinkage values to increase. As a result, it was observed that copper slag has a more positive effect than copper aggregate for the strength and durability of composites. However, by using 25% of copper aggregate by sacrificing some features, it can contribute to the environment and ecosystem. The use of basalt fiber with a length of 6 mm and a ratio of 1% increased the mechanical properties, while the use of 3% contributed significantly to the freeze-thaw resistance. It was determined that copper wastes contribute to the environment and ecosystem by using them instead of cement and aggregate.

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Mechanical Properties and Durability of Concrete with Water Cooled Copper Slag Aggregate

Cited by 57 publications

References 22 publications

Granular Aggregates Based on Finely Dispersed Substandard Raw Materials

Granular Aggregates Based on Finely Dispersed Substandard Raw Materials

Feasibility Study on the Use of Modified Copper Slag as a Sustainable Fine Aggregate in Mortar

Eco-Friendly Basalt Fiber Reinforced Cement Composites (BFRC) Containing Waste Copper As Partial Replacement For Sand And Cement

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