Results 21 to 30 of about 81,022 (343)

Performance evaluation of nano-silica concrete [PDF]

open access: yesE3S Web of Conferences, 2020
In this paper, the study of the influence of nano-silica (nano-SiO2) on the properties of the interface between CSH gel and cement particles and its effect on nano-mechanical properties of the products at the interface zone was examined. In this paper M50 grade SCC mixes were developed using 5% micro-silica and various percentages of 0.5%, 1.0% and 1.5%
Kumar Kakara S J   +3 more
openaire   +2 more sources

Durability performances of concrete with nano-silica [PDF]

open access: yesConstruction and Building Materials, 2014
This study investigated the durability properties of concrete containing nano-silica at dosages of 0.3% and 0.9%, respectively. Due to the nano-filler effect and the pozzolanic reaction, the microstructure became more homogeneous and less porous, especially at the interfacial transition zone (ITZ), which led to reduced permeability.
Du, Hongjian, Du, Suhuan, Liu, Xuemei
openaire   +2 more sources

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

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

Nano silica dispersion in epoxy: the investigation of heat, milling speed and duration effect [PDF]

open access: yes, 2008
Nano composites are a promising development but the challenge of homogenous and discrete dispersion of the nano fillers are barriers that must be overcome before they can be effectively implemented. Although the common dispersion methods such as particle
Choong, Kooi Chee   +5 more
core   +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

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

Pullout behavior of polypropylene macro-synthetic fibers treated with nano-silica [PDF]

open access: yes, 2015
A study of the effects of nano-silica treatment on the bonding properties of macro synthetic polypropylene fibers embedded in a cement matrix is provided in the present paper as a step to improve interfacial properties of the fiber reinforced ...
Bondioli, Federica   +3 more
core   +1 more source

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