A5053644109- Concrete and Cement Materials Research
- Lignin and Wood Chemistry
- Magnesium Oxide Properties and Applications
- Minerals Flotation and Separation Techniques
- Grouting, Rheology, and Soil Mechanics
- Chemical Synthesis and Characterization
- Additive Manufacturing and 3D Printing Technologies
- BIM and Construction Integration
- Building materials and conservation
- Nuclear materials and radiation effects
- nanoparticles nucleation surface interactions
- Radioactive element chemistry and processing
- Nuclear and radioactivity studies
- Innovative concrete reinforcement materials
- Advanced Cellulose Research Studies
- Concrete Properties and Behavior
- Enzyme-mediated dye degradation
- Thin-Film Transistor Technologies
- Innovations in Concrete and Construction Materials
- Materials Engineering and Processing
- 3D IC and TSV technologies
- Fluid Dynamics and Thin Films
- Silicon Nanostructures and Photoluminescence
- Analytical Chemistry and Sensors
- Dyeing and Modifying Textile Fibers
VTT Technical Research Centre of Finland
2010-2022
Espoo Music Institute
2021
Water containing suspended nanobubbles is utilized in various applications. The observed lifetime of several weeks, whereas, according to the classical theory bubble stability, a nanosized should dissolve within microseconds. Explanations for longevity bubbles have been proposed but none them has gained general acceptance. In this study, we derive an explanation existence metastable solely from thermodynamic principles. According our analysis, dissolution aqueous bulk nonspontaneous below...
Early-age hydration of ordinary Portland cement is now acknowledged to originate from nucleation and crystal growth calcium–silicate–hydrates. The acceleration mechanism water-soluble inorganic substances, such as calcium chloride, still unclear. In the present study, was approached in two independent ways. First, effect filler materials (limestone quartz powder) chloride (CaCl 2 ) were studied experimentally with a conduction calorimeter. Second, thermodynamic modelling. experimental test...
Abstract This paper presents the concept of an alkali-O 2 oxidation process for producing lignin dispersants in a feasible manner at kraft pulp mill. The uses O gas to increase anionic charge and final oxidised can serve as concrete plasticiser or versatile dispersant. integrated provides several benefits recovery, following oxidation, recycling chemicals. Firstly, CO precipitated be used without sulphuric acid washing step. simplifies recovery no excess sulphur is introduced into mill...
Nano-sized particles have got a focus of great interest for the past decade. These ultrafine can an effect in multiple ways on concrete technology. Although most effects nanoparticles are desired, huge surface area introduced by also incorporates negative effects, such as loss workability and safety aspects. Agglomeration nano-sized spray-drying is one potential method to overcome effects. In this study, ultra-fine material was dispersed agglomerated successfully. Agglomerate structure...
In this work, high-temperature annealing of reactive ion etched silicon microstructures in H2 and Ar gases is studied. Three types structural features were with four different masks into ⟨100⟩-oriented wafers. Scanning electron microscope atomic force (AFM) results show that when smoothing due to surface diffusion desorption taking place both the argon hydrogen gas environments, three respond differently treatments. The was observed be strongly dependent on temperature argon, whereas...
Early-age hydration of Ordinary Portland Cement (OPC) was studied in the presence two additional surfaces. Additional surfaces are known to accelerate early-age OPC. Autocatalytic reaction modelling used determine acceleration mechanism Heat development measured with semi-adiabatic calorimetry and results were modelled an autocatalytic reaction. able number initially active nucleation sites hydration. OPC followed principles throughout induction period accelerating period. Both added...
Abstract A combination of gasification low and intermediate level radioactive waste (LILW) conditioning the resulting product within a geopolymer matrix is potential alternative for vitrification technologies as an immobilisation method. Geopolymer matrices have demonstrated good retention capability radionuclides in many studies technology has been implemented at industrial scale Slovakia Czech Republic. However, practical loading limited by mechanical properties encapsulated matrix. Even...
Manning claimed recently that the present models of bubble dissolution are inapplicable for nanosized bubbles. We argue to contrary, and clarify interpretation Young–Laplace equation.