A5084088826- Concrete and Cement Materials Research
- Innovative concrete reinforcement materials
- Building materials and conservation
- Magnesium Oxide Properties and Applications
- Concrete Corrosion and Durability
- Concrete Properties and Behavior
- Recycled Aggregate Concrete Performance
- CO2 Sequestration and Geologic Interactions
- Innovations in Concrete and Construction Materials
- Rock Mechanics and Modeling
- Geophysical Methods and Applications
- Recycling and utilization of industrial and municipal waste in materials production
- Civil and Structural Engineering Research
- Ion-surface interactions and analysis
- Advanced ceramic materials synthesis
- Grouting, Rheology, and Soil Mechanics
- Nuclear materials and radiation effects
- Groundwater flow and contamination studies
- Ultrasonics and Acoustic Wave Propagation
- Odor and Emission Control Technologies
- Tunneling and Rock Mechanics
- BIM and Construction Integration
- Layered Double Hydroxides Synthesis and Applications
- High-pressure geophysics and materials
- Non-Destructive Testing Techniques
University of Ulster
2022-2024
Swiss Federal Laboratories for Materials Science and Technology
2015-2024
University of Kassel
1983
Deutsches Archäologisches Institut, Zentrale
1983
University of Zurich
1958
Rhodes University
1937
The production of cement is responsible for about 8% man-made CO2 emissions. fixation by mineral carbonation in Ca- and Mg-rich raw materials such as cement-based concrete various stages its lifetime magnesium silicate-based rocks (e.g. olivine) can provide a significant long-lasting sink CO2. Carbonated material be used novel construction materials, which potentially could even negative. Despite first applications beyond pilot stage, further research needed to reach economically...
In a model system for alkali–silica reaction consisting of microsilica, portlandite (0–40 mass%), and 1M alkaline solutions (NaOH, KOH), the influence calcium on silica dissolution formation products is investigated. The its are characterized using calorimetry, X-ray diffraction, thermogravimetric analysis, nuclear magnetic resonance, desorption experiments, pore solution analysis in combination with thermodynamic modeling. Silica proceeds until consumed due to C–S–H, subsequently,...
Amorphous and crystalline alkali silica reaction (ASR) products formed in aggregates of two different concrete mixtures exposed to the prim test both at 38 °C 60 have been analysed by scanning electron microscope with energy dispersive X-ray spectroscopy Raman microscopy. Additionally, amorphous ASR were synthesized microscopy 29Si nuclear magnetic resonance. display a higher Na/K-ratio than ones. Both types structure dominated Q3-sites (Si-tetrahedra three bridging oxygen atoms typical for...
During the demolition and recycling process specific surface area per volume of concrete is significantly increased. As a result, potential for CO2 absorption by carbonation cement hydrates enhanced. In this study, recycled aggregates (RCA) with varying moisture contents are carbonated 100% at atmospheric pressure. The changes in properties RCA characterized they used production concrete. There only minor impact on bulk density water adsorption RCA. accelerated leads to formation calcium...