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Influence of Nano Silica on Fresh and Hardened Properties of Cement-based Materials – A Review

Influence of Nano Silica on Fresh and Hardened Properties of Cement-based Materials – A Review In field, the research has been extended to the usage of Nano material in concrete and thereby enhancing the performance of the structure. It has been identified that incorporating a trifling amount of Nano material in concrete can modify the properties of cement at Nano level which makes the concrete much sustainable. Among the various Nano materials, Nano Silica has gained the attention in contemporary days because it offers high SSA and good pozzolanic reactivity even better than the other conventional mineral admixtures. Due to its high SSA, Nano Silica extended its advantages as a better filler, which makes the concrete less porous and thus enhances the durability. Early-age strength gain is due to the accelerated Nano Silica – Cement hydration which ends up in the formation of complex microstructural C-S–H gel. Accelerated hydration is the result of high pozzolanic reactivity of Nano Silica. For the better rheological properties, concrete with Nano Silica requires the higher dosage of super plasticizers to promote the rolling effect of Nano particles and also to avoid the agglomeration of Nano particles in concrete even at high water-cement ratio (0.45) when paralleled with conventional one. Moreover, dispersion type, particle size distribution and densification of concrete with Nano Silica particles plays a vital role in enhancing the strength parameters of the concrete. This review paper presents the study on how Nano Silica in concrete at different dosages can alter the properties of the concrete. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Silicon Springer Journals

Influence of Nano Silica on Fresh and Hardened Properties of Cement-based Materials – A Review

Silicon , Volume 14 (14) – Sep 1, 2022

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References (124)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature B.V. 2022
ISSN
1876-990X
eISSN
1876-9918
DOI
10.1007/s12633-021-01598-z
Publisher site
See Article on Publisher Site

Abstract

In field, the research has been extended to the usage of Nano material in concrete and thereby enhancing the performance of the structure. It has been identified that incorporating a trifling amount of Nano material in concrete can modify the properties of cement at Nano level which makes the concrete much sustainable. Among the various Nano materials, Nano Silica has gained the attention in contemporary days because it offers high SSA and good pozzolanic reactivity even better than the other conventional mineral admixtures. Due to its high SSA, Nano Silica extended its advantages as a better filler, which makes the concrete less porous and thus enhances the durability. Early-age strength gain is due to the accelerated Nano Silica – Cement hydration which ends up in the formation of complex microstructural C-S–H gel. Accelerated hydration is the result of high pozzolanic reactivity of Nano Silica. For the better rheological properties, concrete with Nano Silica requires the higher dosage of super plasticizers to promote the rolling effect of Nano particles and also to avoid the agglomeration of Nano particles in concrete even at high water-cement ratio (0.45) when paralleled with conventional one. Moreover, dispersion type, particle size distribution and densification of concrete with Nano Silica particles plays a vital role in enhancing the strength parameters of the concrete. This review paper presents the study on how Nano Silica in concrete at different dosages can alter the properties of the concrete.

Journal

SiliconSpringer Journals

Published: Sep 1, 2022

Keywords: Nano Silica; High specific surface area; Pozzolanic Reactivity; Filler effect; Mechanical properties; Durability studies

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