A5086489925- Concrete and Cement Materials Research
- Magnesium Oxide Properties and Applications
- Recycling and utilization of industrial and municipal waste in materials production
- Nuclear materials and radiation effects
- Mine drainage and remediation techniques
- Bauxite Residue and Utilization
- Innovative concrete reinforcement materials
- Thermal and Kinetic Analysis
- Advanced ceramic materials synthesis
- Metal Extraction and Bioleaching
- Tailings Management and Properties
- Materials Engineering and Processing
- CO2 Sequestration and Geologic Interactions
- Clay minerals and soil interactions
- Material Properties and Applications
- Concrete Corrosion and Durability
- Metallurgical Processes and Thermodynamics
- Recycling and Waste Management Techniques
- Innovations in Concrete and Construction Materials
- Aerogels and thermal insulation
- Environmental and Industrial Safety
- Calcium Carbonate Crystallization and Inhibition
- Recycled Aggregate Concrete Performance
- Pigment Synthesis and Properties
- Minerals Flotation and Separation Techniques
Material (Belgium)
2022-2024
Flemish Institute for Technological Research
2020-2024
KU Leuven
2015-2019
Princeton University
2018-2019
With an increasing number of low-grade primary ores starting to be cost-effectively mined, we are at the verge mining a myriad and secondary mineral materials. At same time, practices waste recycling both evolving towards sustainable near-zero-waste processing resources within circular economy that requires shift in business models, policies improvements process technologies. This review discusses evolution ore raw material will allow for sufficient supply critical materials as well base...
The bulk of the cement industry's environmental burden is from calcareous source. Calcium mostly available naturally as limestone (CaCO3), where almost half mass eventually released CO2 during clinker manufacture. Iron (Fe) fourth most common element in Earth's crust surpassed only by oxygen, silicon, and aluminium; therefore, potential raw materials for alternative cements can contain significant amounts iron. This review paper discusses detail abundantly Fe-rich natural resources...
Iron is the fourth most abundant element in Earth's crust, and cementitious materials are expected to contain iron-bearing phases, either major or minor quantities. Iron-rich cement clinker gaining attention because of its lower carbon footprint higher sulfate resistance, while iron-rich resources also increasingly being investigated as supplementary precursors for alkali-activated materials. However, iron-containing phases among least characterised This review paper discusses challenges...
Abstract Alkali‐activated materials can be formed by alkali‐activation of Fe‐rich non‐ferrous metallurgical slags (AA‐NFMS). To study NFMS in AA‐NFMS systematically, five were synthesized, with different CaO (6–16 wt%), Al 2 O 3 (7–11 and MgO (0–4 wt%) contents, while keeping the same FeO x /SiO molar ratio. The effect slag chemistry alkali ions (Na + /K = 0, 0.5, 1) alkali‐activating solution on reaction kinetics, compressive strength (3, 7, 28 days), pore structure was investigated....
Belonging to the family of alternative cementitious materials, inorganic polymers are rising in importance because drive decrease CO2 emissions concrete production. A synthetic Fe-rich slag resembling industrial copper or lead slags, was mixed with a sodium silicate activating solution. 57Fe Mössbauer spectra analyses indicate that oxidation reactions taking place simultaneously polymerization reactions. The contains Fe2+ states and small amount Fe3+. During new octahedral state is formed,...
Abstract The microstructure of inorganic polymers ( IP ) formed from fayalite slag was investigated as a function the composition different activating solutions. starting 80 wt% amorphous, and after activation using sodium silicate solutions with varying SiO 2 /Na O molar ratios, amorphous phase dissolved binder formed. morphology this binder, including population size remnant particles pores, dependent on particular solution used, became denser level rose. 57 Fe Mössbauer spectroscopy...
Abstract The molecular structures of CaO–FeO x –SiO 2 slags and their inorganic polymer counterparts were determined using neutron X‐ray scattering with subsequent pair distribution function ( PDF ) analysis. synthesized approximate molar compositions: 0.17CaO–0.83FeO–SiO 0.33CaO–0.67FeO–SiO (referred to as low‐Ca high‐Ca, respectively) . data on the reasserted predominantly glassy nature this iron‐rich industrial byproduct. dominant metal‐metal correlation was Fe–Si (3.20‐3.25 Å), smaller...
Abstract Slags from the nonferrous metals industry have great potential to be used as feedstocks for production of alkali‐activated materials. Until now, however, only very limited information has been available about structural characteristics these In work presented herein, synthetic slags in CaO–FeO x –SiO 2 system, representing typical compositions Fe‐rich slags, and inorganic polymers (IPs) produced by activation with alkali silicate solutions studied means X‐ray absorption near‐edge...
Mine tailings pose one of the world's largest volumes challenging residues. To overcome environmental liability and reduce monitoring reclamation costs associated with long-term storage – to add extra income miners' activities sustainable solutions new applications for such residues seem prudent. The aggregate market may be able absorb significant tailings. Due fineness tailings, however, a granulation process is required. studied in present work originated from flotation non-ferrous...
Abstract Aiming to reduce the carbon dioxide emissions associated with cement production, alternative binders such as inorganic polymers currently receive substantial attention and slags from non‐ferrous metallurgy are promising precursors. However, studies that correlate their chemistry crystallinity newly formed binder remain limited. In this work, effect of three different solidification methods on glass formation reactivity FeO x –SiO 2 slags, well molecular structure resultant Fe‐rich...
This research investigated the possibility of using metallurgical slags from copper and lead industries as partial replacement for cement. The studied were fayalitic, having a mainly ferro-silicate composition with minor contents Al2O3 CaO. treated at 1200–1300 °C (to reduce heavy metal content) then granulated in water to promote formation reactive phases. A full hydration study was carried out assess kinetics reactions, phases formed during hydration, reactivity their strength activity...
Few studies focus on the co-valorization of river dredging sediments (DS) and residual waste glass (RWG) in alkali-activated binders. This study investigates use DS as an aluminosilicate source by substituting a natural resource (metakaolin (MK)), while using RWG activator (sodium silicate source). Suitable treatments are selected to increase potential reactivity each residue. The is thermally treated at 750 °C promote limestone clays’ activation. (amorphous, rich silicon, containing sodium)...
The present article investigates the potential of co-calcination with kaolinite as a sector-wide solution for transformation bauxite residue into an effective supplementary cementitious material (SCM). Bauxite residues from eight alumina refineries were co-calcined 30 wt% at 750°C. SCMs moderately high reactivities obtained. Mortars replacement Portland cement (CEM I) by had relative strengths 73 ± 4%, 87 and 88 2% after 2, 7, 28 days compared to CEM I reference mortar. reactivity...