4.3. Nano-Scale Silica Fume for Improving Concrete Performance
Ultra-fine amorphous colloidal silica was found to be much more efficient than micron
sized silica for improving the performance such as permeability, and subsequently,
durability [5]. In addition, reduced amount of about 15 to 20 kg of nano-silica was found
to provide same strength as 60 kg of regular or micro silica.