Results 261 to 270 of about 221,995 (299)
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Properties of nano silica modified rubbercrete
Journal of Cleaner Production, 2016Abstract Inclusion of crumb rubber from scrap tires in concrete as partial replacement to fine aggregate in production of rubbercrete has provided many beneficial impacts to both environments and concrete. Many properties of rubbercrete are improved compared with conventional concrete.
Bashar S. Mohammed +3 more
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Nano-Macro Correlation of Nano-Silica Concrete
Concrete mixes using progressively finer size nano-silica particles (7–150nm) were prepared to study the effect of nano-size pozzolans (nano-silica). Conventional compression tests demonstrated progressively higher strength with finer size of the nano-silica down to 12nm particle size.Joan Schoepfer, Arup Maji
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Preparation of Silica Nano-Rods by CVD
Advanced Materials Research, 2008The straight silica nano-rods with a diameter of about 200nm and smooth surface were synthesized by chemical vapor deposition method at 1300°C. The as-synthesized samples were characterized by means of scanning electron microscopy, energy dispersive x-ray, and transmission electron microscopy.
Guang Zhu +4 more
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Preparation of Nano-silica and Nano-silicone
Scientific Journal of King Faisal University: Basic and Applied SciencesIn this research, silica and silicon were prepared using glass waste. The preparation process consisted of several stages that started with the collection of crushed glass samples, treating them physically (grinding and granular sorting) and mixing granulated crushed glass with NaOH at ratios of 1:1, 1:2 and 1:3.
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Modification of nano-fibriform silica by dimethyldichlorosilane
Applied Surface Science, 2009Abstract The modification of nano-fibriform silica by dimethyldichlorosilane was studied by transmission electron microscopy, X-ray powder diffraction, infrared spectroscopy, Raman spectroscopy, physical N2 adsorption techniques, differential thermal and thermogravimetric analysis, scanning electron microscopy, and elemental analyzer.
Lijuan Wang +4 more
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Application of nano-silica in concrete
2012This report presents the achievements of the 2012 third quarter focusing on the application of nS in concrete. In this context, nano-silica precipitated from the olivine dissolution in acid (OnS) and nano-silica sludge (nSS) were used for the experimental work.
Quercia Bianchi, G. +2 more
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USE OF NANO-SILICA FOR PREVENTING EXPANSIVE ALKALI-SILICA REACTION IN CONCRETE
2008The effectiveness of nano-silica (NS) in preventing deleterious expansion associated with alkali-silica reaction (ASR) was assessed using concrete mixes made with two siliceous aggregates of different alkali-reactivity. Concrete mixes were also made using condensed silica fume as a reference mineral admixture.
M. BERRA +4 more
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2020
Aqueous silica nanoparticle suspensions are widely available and used within a number of industries. A relatively new area of application is as a grouting material for sealing narrow fractures in tunnels. While silica sols/gels have been used successfully to grout sections of tunnels the continued reliability of the grouting requires knowledge of gel ...
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Aqueous silica nanoparticle suspensions are widely available and used within a number of industries. A relatively new area of application is as a grouting material for sealing narrow fractures in tunnels. While silica sols/gels have been used successfully to grout sections of tunnels the continued reliability of the grouting requires knowledge of gel ...
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Study on reliability of concrete nano-mixture containing nano-silica
Materials Today: Proceedings, 2022M. Venkata Rao +2 more
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