| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Jensen, Pernille Erland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Oxidation of sulfides from secondary materials in cementitious binders as a function of environmental conditions
- 2024Electrodialytic extraction of copper, lead and zinc from sulfide mine tailings:Optimization of current density and operation time
- 2021Screening for key material parameters affecting early-age and mechanical properties of blended cementitious binders with mine tailingscitations
- 2019Evaluation of mine tailings’ potential as supplementary cementitious materials based on chemical, mineralogical and physical characteristicscitations
- 2017The influence of sediment properties and experimental variables on the efficiency of electrodialytic removal of metals from sedimentcitations
- 2016Degradation of oil products in a soil from a Russian Barents hot-spot during electrodialytic remediationcitations
- 2016Wood ash used as partly sand and/or cement replacement in mortarcitations
- 2016Replacement of 5% of OPC by fly ash and APC residues from MSWI with electrodialytic pre-treatment
- 2015Comparison of 2-compartment, 3-compartment and stack designs for electrodialytic removal of heavy metals from harbour sedimentscitations
- 2015Screening of variable importance for optimizing electrodialytic remediation of heavy metals from polluted harbour sedimentscitations
- 2015Multivariate methods for evaluating the efficiency of electrodialytic removal of heavy metals from polluted harbour sedimentscitations
- 2014Electrodialytically treated MSWI APC residue as substitute for cement in mortar
- 2013Effect of pulse current on acidification and removal of Cu, Cd, and As during suspended electrodialytic soil remediationcitations
- 2012Electrodialytic remediation of suspended soil – Comparison of two different soil fractionscitations
- 2007Electrodialytic extraction of Cd and Cu from sediment from Sisimiut Harbour, Greenlandcitations
Places of action
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article
Screening for key material parameters affecting early-age and mechanical properties of blended cementitious binders with mine tailings
Abstract
Considering the vast amounts and wide variability of tailings available worldwide, means to assess the potential of tailings for cement clinker replacement based on their physical, chemical and mineralogical characteristics would be useful. This work studied the early-age properties and mechanical performance of mortar of Portland limestone cement (CEM II/A-LL) clinker in a ternary blend with partial clinker substitution by 13 metal and mineral mine tailings. The properties studied included workability, setting time, porosity and compressive strength. The effects of replacement level and mine tailing characteristics on the performance of mortar were assessed by chemometrics.<br/>The results showed that most mine tailings reduced the workability of mortar (3–19 %) and that an increased replacement level reduced the workability further. For most mine tailings, the initial setting time was identical to the reference, while they reached the final setting faster. Tailings had a variable impact on the porosity at low replacement, while porosity generally increased at a higher replacement. The compressive strength decreased with increasing replacement in most cases, and a clear negative correlation was found between compressive strength and porosity. However, five mine tailings developed up to 10 % higher strength after 28 days with 20 % supplementary composite material compared to the reference.<br/>Chemometric analyses showed that tailings with high specific surface area and silicon dioxide content influenced the mechanical properties of the mortar most positively. Conversely, larger grain sizes, high loss on ignition, calcium oxide and calcium carbonate content impacted compressive strength negatively.<br/>The analyzed characteristics do, however, not fully explain the resulting early-age and mechanical properties, thus additional investigations are needed to understand the performance in detail.