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Showing 1 to 13 of 13 for “"Nanosilica"”.
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Significance of nanosilica incorporation in type G oil well cement pastes
… Preliminary research work showed that nanosilica is capable of reducing OWC porosity and therefore is was thought that nanosilica incorporation may have potential to improve the aforementioned performance requirements. In this research, Type G OWC paste specimens produced with water to …
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Development of High Strength Dicalcium Phosphate Anhydrous Cement with Nanosilica Sol
… assisted production process, and the addition of nanosilica sol as reinforcement to increase mechanical properties. This is of interest because Silicon is a biocompatible element, which can be formed into biodegradable compounds, shown to enhance the mechanical properties of calcium phosphate …
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The Effect Of Colloidal Stability On The Heat Transfer Characteristics Of Nanosilica Dispersed Fluids
… related to the dispersion characteristics of the nanosilica in various fluids described above. The thickness of the diffuse layer on nano particles was computed and experimentally confirmed in selected conditions for which there was no agglomeration. As the thickness of the diffuse layer decreased …
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The Safety and Immunostimulatory Properties of Amorphous Silica Nanoparticles <10 nm in Diameter
… effects both in vitro and in vivo, especially of nanosilica particles under 10 nm in diameter. The aim of this thesis was to investigate the cellular and in vivo activity of < 10 nm diameter nanosilica particles with different properties (e.g., size and dissolution rate in dilute conditions) as it …
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Synthesis and Application of Ceramic Paste for High-Temperature Electronic Packaging
… a higher oxygen bonding percentage for the 10% nanosilica ceramic sample than other samples. XRD peak broadening is largest for the 10% nano-silica ceramic which indicated smaller crystallite sizes. The smaller crystallite size for the 10% nanosilica sample introduces a larger microstrain to the …
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Effects of elevated temperature exposure on cement-based composite materials
… the effects of incorporating small dosages of nanosilica on the degradation of cement pastes exposed to various heating and cooling regimes and accelerated carbonation. Carbonation proves to be the critical cause of damage in cement paste after high temperature exposure. It is confirmed that …
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Lattice Vibration Study Of Silica Nanoparticle In Suspension
… to the base fluid water for 2% concentration of nanosilica.
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Characterization, Evaluation, And Repair of Full-Scale Alkali-Silica Reaction Affected Structural Concrete
… samples are repaired with silane and nanosilica-based coatings, and others are confined with fiber-reinforced ultra-high performance concrete (UHPC). In the field, cracked concrete traffic (i.e., Jersey) barriers are repaired with flexible caulk and silane and slurry surface …
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Concrete microstructure homogenization technique with application to model concrete serviceability
… model is validated by the experimental study of nanosilica effects on the mechanical properties of cement paste. Concrete RVE can be generated by converting realistic or (re)constructed concrete material image into finite element environment. In this dissertation, cell operation method is …
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Phosphorus-Containing Polymers, Their Blends, and Hybrid Nanocomposites with Poly(Hydroxy Ether), Metal Chlorides, and Silica Colloids
… silanol hydroxyl groups on the surface of the nanosilica.
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Use of end-of-waste foamed fibers and aggregates into a cementitious mortar
… (alkaline hydrolysis and sol-gel deposition of nanosilica) were performed on fibers, to improve chemical adhesion with the cement paste. Finally, taking into account the need for reducing the consumption of raw materials, foamed fibers and aggregates were produced starting from a polymeric …