Effect of secondary copper slag as cementitious material in ultra-high performance mortar

Edwin, Romy Suryaningrat; Schepper, Mieke De; Gruyaert, Elke; Belie, Nele De

doi:10.1016/j.conbuildmat.2016.05.007

Cited by 104 publications

(51 citation statements)

References 24 publications

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“…When OPC is replaced by copper slag in the same weight of 5 wt.%, copper slag can fill in the pores between hydration products and aggregates, and increase the compressive strength and elastic module. Our result is consistent with the literature [19]. For the breaking point in C5 stress-stain curve, the C5 concrete has less C-S-H gel produced by the less OPC, resulting in the bad ductility.…”

Section: Mechanical Strengthssupporting

confidence: 92%

Mechanical properties, pozzolanic activity and volume stability of copper slag-filled cementitious materials

Song

Feng

Xiong

et al. 2019

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Copper slag is a by-product waste during copper pyrometallurgy. The piling-stack of copper slag not only occupies a large quantity of plowland, but causes potential danger for local residents. In order to reduce the storage of copper slag, this study prepared concretes by replacing ordinary cement by copper slag. The mechanical properties, phase composition, micrographs, pozzolanic activity and volume stability of the compound cementitious materials were evaluated with fly ash as control. It was found that when the content of copper slag was 5%-10%, the best mechanical properties of concretes were obtained. The phase composition of hydration products of copper slag and fly ash based cementitious materials was almost identical. The micrographs and pozzolanic activity showed that copper slag had stronger reactivity than fly ash. Copper slag based pastes had good volume stability. Copper slag presented a potential application in mortars and concretes.

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Section: Mechanical Strengthssupporting

confidence: 92%

Mechanical properties, pozzolanic activity and volume stability of copper slag-filled cementitious materials

Song

Feng

Xiong

et al. 2019

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“…However, the pozzolanic reactivity determined by the Chapelle test was found to be low. In the work of Edwin et al (Edwin et al, 2016), the reactivity and effect of Cu slag as SCM in ultra-high performance mortar was assessed by isothermal calorimetry, strength activity index, Chapelle test and Frattini test. The final conclusions were that 1) addition of Cu slags slows down the hydration/heat flow of the cement paste and 2) rate of pozzolanic activity of the Cu slag depends on temperature, curing age and particle size.…”

Section: Introductionmentioning

confidence: 99%

Reactivity of modified iron silicate slag as sustainable alternative binder

Sivakumar¹,

Gruyaert²,

Belie³

et al. 2019

Sustainable Construction Materials and Technologies (SCMT)

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A possible solution to decrease the CO2 footprint caused by the cement industry and to enhance the transition to circular economy is to use slags as Supplementary Cementitious Materials (SCM). The study presented here focuses on valorizing and investigating the reactivity and mechanical properties of blended binder systems combining Modified Iron Silicate (MFS) slag and Ordinary Portland Cement (OPC). MFS slag is a fumed by-product synthesized during the production of Copper (Cu) metal. This slag can be used as possible alternative SCM due to its pozzolanic behaviour. To study the replacement level in relation to reactivity and strength development, replacement levels of 15, 30 and 50 wt% of MFS-slag in ordinary portland cement are analyzed. The work can be divided into two categories: 1) assessing the reactivity through thermogravimetric analysis (TGA) and 2) evaluating the compressive strength (as a function of time) of mortar with MFS-slag after 2, 7, 28 and 90 days. TGA at 7, 15, 28 and 90 days allows to determine the reduction of portlandite content which gives an indication on the pozzolanic reactivity. Reactivity of MFS-slag blended systems is also determined relative to inert filler blended systems to discern between the reactive behavior of the MFS-slag and the filler effect.

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“…The use of nickel slag in cement-based construction will result in environmentally friendly construction because the heavy metals in the slag are more stable. This is based on research by [3] obtained HgS (Sulfur from cement + mercury) compounds and [4], which stabilized heavy metals with cement in concrete which formed new compounds Ca (Zn (OH)3)2·2H2O (cement + zinc).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Nickel Slag Concentrationas Coarse Aggregates on the Compressive Strength of Concrete

Sriyani¹,

Ngii²,

Kadir³

et al. 2019

Proceedings of the International Conference on Environmental Awareness for Sustainable Development in Conjunction With Internat

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Production of nickel slag waste from PT. Antam Pomalaa currently reaches 1 million tons/year. One effort to reduce the waste is by using it as an aggregate of concrete mixtures. However, the use of substandard agglomerates (nickel slags) to replace natural aggregates as a whole has not been possible. The purpose of this study was to determine the compressive strength of concrete that used nickel slag as coarse aggregate. Nickel slagswere broken down with a stone crusher and filtered into coarse aggregates with the size of 1-2 cm. Concrete mix design referred to SNI 03-2834-200. The nickel slag was varied by a concentration of 0%, 25%, 50%, 75%, and 100%. The specimens were a cube with the length, width, and height of 15 × 15 × 15 cm with a total of 15 cubes. Testing was done after the concrete reached the age of 28 days with a compression test tool. The test results show that the compressive strength of concrete at the age of 28 days for the samples with slag concentration of 0% (control), 25%, 50%, 75%, and 100% reached 17.61 MPa, 13.65 MPa, 17.24 MPa, 17.34 MPa, and 21.95 MPa, respectively.

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Effect of secondary copper slag as cementitious material in ultra-high performance mortar

Cited by 104 publications

References 24 publications

Mechanical properties, pozzolanic activity and volume stability of copper slag-filled cementitious materials

Mechanical properties, pozzolanic activity and volume stability of copper slag-filled cementitious materials

Reactivity of modified iron silicate slag as sustainable alternative binder

The Effect of Nickel Slag Concentrationas Coarse Aggregates on the Compressive Strength of Concrete

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