Utilizing Nano-Silica (NS) in Concrete Blends

Abstract

Concrete is the most widely utilized material in construction, with its design consuming a
significant portion of global cement production. However, the extensive use of cement
contributes substantially to CO2 emissions, exacerbating the greenhouse effect. One strategy to
mitigate this environmental impact involves reducing cement content in concrete mixes by
incorporating silica fines. Nano-Silica (NS) is promisi n g as a cement substitute and concrete
additive among these fines. Nonetheless, the complex synthesis process of commercial NS
renders it impractical for the construction industry. Moreover, the precise impact of NS on
concrete still needs to be understood.
In a recent research endeavour, a novel nano-silica derived from olivine has been developed
and will be compared with commercially available NS through application and testing.
Additionally, modifications to a mix design tool utilized for Self-Compacting Concrete (SCC)
will be made to accommodate particles ranging in size from 10 to 50 nm. This paper
aims to provide an up-to-date overview of NS application in concrete, focusing on
optimizing its properties for effective integration. Topics covered include the NS production
process, its influence on concrete properties, and potential applications. Furthermore, an
outline of the experimental setup and proposed future research directions is presented.