Techniques for preparation and dispersion of nano-SiO2 in Cementitious System—A Review

Abstract

Nowadays, the research in the field of concrete is driving its focus on novel technology by making use of nanosized particles so-called nanotechnology in concrete. The oxide nanoparticles have a great influence on concrete properties, amongst all the nanoparticles, nano-silica is the first nano product that replaced the micro silica or silica fume in concrete, and it is the most predominantly used nanoparticle amid all other nanoparticles in cementitious system. This paper states the overview on various methods involved in production of nano-SiO2 particles for the purpose of utilizing in cementitious system as well as the various techniques for well dispersion of nanosized SiO2 particles in cement matrices.