Beneficial role of nanosilica in cement based materials – A review

[Display omitted] •Silica nanoparticles have potential to develop more durable and sustainable high performance concrete.•Low strength and delay in setting of eco-concrete has been improved with the incorporation of nanosilica.•Calcium leaching was well controlled by the addition of nanosilica. Nano...

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Bibliographic Details
Published inConstruction & building materials Vol. 47; pp. 1069 - 1077
Main Authors Singh, L.P., Karade, S.R., Bhattacharyya, S.K., Yousuf, M.M., Ahalawat, S.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.10.2013
Elsevier B.V
Subjects
Analysis
Building materials
Concrete
Forecasts and trends
Microstructure
Nano-engineered concrete
Nanotechnology
Properties
Silica nanoparticles
UHPC
India
Silica nanoparticles
UHPC
Nano-engineered concrete
Microstructure
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Summary:[Display omitted] •Silica nanoparticles have potential to develop more durable and sustainable high performance concrete.•Low strength and delay in setting of eco-concrete has been improved with the incorporation of nanosilica.•Calcium leaching was well controlled by the addition of nanosilica. Nanomaterials are gaining widespread attention to be used in construction sector so as to exhibit enhanced performance of materials in terms of smart functions and sustainable features. During the last one decade a number of nanomaterials such as nanosilica, nanotitania, carbon nanotubes and nanoalumina have been explored and among them nanosilica has been used most extensively. A number of publications appeared towards the use of nanosilica in cementitious system is mainly due to the fact that concrete remains the most complex material and its hydration mechanism is still not completely understood. Consequently, researchers are focusing on the basic science of this material at nano/atomic level. Further, researchers are continuing to improve the durability and sustainability of concrete, and they have realized significant increment in mechanical properties of cementitious materials by incorporating nanosilica. This review paper summarizes the effects of nanosilica addition on hydration kinetics, microstructure refinement, fresh/hardened properties and durability characteristics of concrete.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2013.05.052