Microsilica, also known as silica fume, is a waste product of industry that can be used as an admixture in concrete to improve its engineering properties.
Strength
Microsilica increases compressive strength, tensile strength, and abrasion resistance.
Durability
Microsilica reduces thermal cracking and improves durability. It also reduces permeability and increases resistance to sulfates, chloride ingress, and reinforcement corrosion.