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Showing 1 to 15 of 15 for “"Nano silica"”.
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The Investigation of Nano Silica in the Cement Hydration Pro
<p>With the advent of nano technology, materials have been developed that can be applied to high performance concrete mix designs. Nano silica reacts with calcium hydroxide (CH) to develop more of the strength carrying structure of cement: calcium silica hydrate (CSH). In this paper, relationships …
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Mechanical, thermal and acoustic properties of rubberised concrete incorporating nano silica
… the behaviour of rubberised concrete (RuC) with nano silica (NS) and addressed the acoustic benefits of rubberised concrete. The current research investigates the effect of incorporating colloidal nano silica on the mechanical, thermal and acoustic properties of Rubberised concrete and compares …
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Bond Performance between Corroded Steel and Recycled Aggregate Concrete Incorporating Nano Silica
… recycled aggregate concrete incorporating nano-silica under both normal and corrosive environmental conditions. The experimental part includes testing of 180 pull-out specimens prepared from 12 different mixtures. The main parameters studied were the amount of recycled aggregate (RCA) (i.e. …
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Effect of silicon nano particles added to the polymeric coatings
… of a coatingto the same coating with added nano silica. The sample coating for this project was bis-ureasil which was synthesized using 1:1 equivalent ratio of bis (3-trimethoxysilyl-propyl) amine (BTMSPA) (318.0g) and IPDI (52.0g) in 400g of anhydrous THF. The other coating was prepared by …
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Development of masterbatches for poly (ethylene terephthalate) with improved resistance to CO2 permeation
This research has investigated nanocomposite based masterbatches as routes to improve the CO2 retention properties of PET bottles. Masterbatches of different types of polyamide/clay, PET/clay, PET/nano-silica flakes and PET/divalent layered metal phosphonates (DLMP) were produced by melt …
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Development of an eco-friendly composite material for engineering applications
… and long term performance of these composites, nano clay particles and colloidal nano silica was added in the production of both systems. In order to remove the surface impurities from the fibre surface, to enhance the adhesion between the matrix and the fibres and to improve long term stability …
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Investigation of the fracture phenomena during the milling process of inorganic particulates and brittle fracture of polymer composites using fractal theory
… by the simultaneous milling and coating with nano-silica to the Surface Fractal Dimension of the impact fracture surfaces. First, the dissertation examines the behavior of un-coated and micron-sized wax pre-coated particulates in a specially designed Single-event Fluid Mill (SEFM), which is …
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Synthesis and Application of Ceramic Paste for High-Temperature Electronic Packaging
… for high-temperature electronic packaging. Nano aluminum nitride and nano-silica powders were embedded to promote the paste curing process, limit the grain growth, and increase its bond shear strength. The chip-to-substrate bond strength was enhanced and met the MIL-STD requirements for …
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Development of environmentally benign microencapsulation with polymer microspheres and liposomes
… include drugs, fire retardant, inorganic nanoparticles, and carbon nanotubes, was developed. In the process, host particles, monomers and other components are first mixed together followed by polymerization and encapsulation. Thin-film coating was achieved for particle size above 1 um For …
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Chemically Induced Phytoextraction of Lead (Pb) Contaminated Soil by Switchgrass (Panicum virgatum L.), assisted with BAP and NTA applications
… alkylpolyglucoside (APG) Triton X-100 (2%), and nano-silica were applied to switchgrass (Panicum virgatum L.) growing in 5L pots of Pb-contaminated soil. The second experiment used 10mM NTA, the alkylpolyglycoside Triton X-100 (2%), foliar application of the plant growth regulator …
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Sugarcane green ceramic hollow fibre membrane for oily wastewater separation
… was also found that these parameters gave evenly nano-silica particle distribution on the surface. As a result, excellent oil flux (134.2 L/m2h ) and oil separation efficiency (99.9%). Therefore, the optimization of oil condition in term of pH, oil concentration and oil temperature on the …
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The Effect Of Colloidal Stability On The Heat Transfer Characteristics Of Nanosilica Dispersed Fluids
Addition of nano particles to cooling fluids has shown marked improvement in the heat transfer capabilities. Nanofluids, liquids that contain dispersed nanoparticles, are an emerging class of fluids that have great potential in many applications. There is a need to understand the fundamental …
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Nucleation seeding in metakaolin geopolymers
Geopolymers are a class of amorphous, aluminosilicate-based binders proposed as an alternative to the cement binders used commonly in the construction industry. One of the main advantages of using geopolymer concrete is the fact that waste materials like fly ash are used as precursors for its …
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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 …
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Assessment of nanoparticle emission of polypropylene, polyester and epoxy nanocomposites during automated drilling process.
Polymer nanocomposites are becoming established widely across the industry due to (among other reasons) their lightweight performance advantages, and ability to meticulously target material properties with great control and precision. Despite the beneficial properties, certain nanofillers have …