Results 31 to 40 of about 582,474 (302)

Mechanical Performance and Microscopic Mechanism of Coastal Cemented Soil Modified by Iron Tailings and Nano Silica

open access: yesCrystals, 2021
In order to explore the effect of composite materials on the mechanical properties of coastal cement soil, cement soil samples with different iron tailings and nano silica contents were prepared, and unconfined compression and scanning electron ...
Xinjiang Song   +6 more
doaj   +1 more source

Remote control of diffusion from magnetic hollow silica microspheres [PDF]

open access: yes, 2013
Composite hollow core silica/iron oxide microparticles with the ability to store an encapsulated payload and release a defined quantity “on demand” by the application of a radiofrequency magnetic field were prepared.
Kovačík, Pavel   +2 more
core   +1 more source

Nano-silica modified phenolic resin film: manufacturing and properties

open access: yesNanotechnology Reviews, 2020
Nano-silica modified phenolic resin film is prepared using different mass fractions of nano-silica by liquid composites molding (LCM). The effects of nano-silica on the rheology and curing of phenolic resin are studied by rheometer and differential ...
Ding Jie   +5 more
doaj   +1 more source

Hydration Characteristics of Tricalcium Aluminate in the Presence of Nano-Silica [PDF]

open access: yesNanomaterials, 2021
Tricalcium aluminate (C3A) is the most reactive component of the Portland cement and its hydration has an important impact on the workability and early strength of concrete. Recently, nanomaterials such as nano-silica (nano-SiO2) have attracted much attention in cement-based materials because of its pozzolanic reactivity and the pore-filling effect ...
Dapeng Zheng   +5 more
openaire   +3 more sources

Preparation and mechanical properties of nano-silica/UPR polymer composite

open access: yesScience and Engineering of Composite Materials, 2014
This article mainly aims at experiments used for modifying unsaturated polyester resin (UPR), and trying to enhance the strengthening and toughening performance of nano-silica/UPR polymer composite in order to improve its integrated mechanical properties
Wang Yan-qing   +4 more
doaj   +1 more source

Silica nanoparticles and their interaction with cells : a multidisciplinary approach [PDF]

open access: yes, 2014
Silica nanoparticles are increasingly used as drug delivery systems and for biomedical imaging. Therapeutic and diagnostic agents can be incorporated into the silica matrix to improve the stability and solubility of hydrophobic drugs in biological ...
Kettiger, Hélène Emilie
core   +1 more source

Propiedades reológicas y mecánicas de un hormigón autocompactante con adición de nano-sílice y micro-sílice

open access: yesRevista ALCONPAT, 2016
Propiedades reológicas y mecánicas de un hormigón autocompactante con adición de nano-sílice y micro-sílice RESUMEN El hormigón autocompactante es el resultado de diseñar mezclas de calidad con capacidad para asegurar su correcta colocación en ...
E. Sánchez   +3 more
doaj   +1 more source

Experimental study of the mechanical properties and microstructure of geopolymer paste containing nano-silica from agricultural waste and crystalline admixtures

open access: yesCase Studies in Construction Materials, 2022
This study explored the influence of nano-silica and Crystalline Admixture (CAs) on the mechanical properties and microstructure of geopolymer pastes. Nano-silica and CAs was added to the mixture at 3%, 4% and 5% respectively by weight of fly ash.
Ar Razi Alvee   +7 more
doaj   +1 more source

Rice Husk Ash as a Renewable Source for the Production of Value Added Silica Gel and its Application: An Overview [PDF]

open access: yes, 2012
In recent years, silica gels have developed a lot of interest due to their extraordinary properties and their existing and potential applications in science and technology.
Pandey, Monika   +3 more
core   +1 more source

Impact of Nano-silica on the hydration, strength, durability, and microstructural properties of concrete: A state-of-the-art review

open access: yesCase Studies in Construction Materials, 2023
Concrete significantly impacts the atmosphere as its primary raw material, Portland cement, determines a considerable proportion of carbon dioxide in its production process.
Fadi Althoey   +5 more
doaj   +1 more source

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