Microsilica effect on concrete
The use of microsilica in concrete leads to a structure with finer cavities that reduce permeability. On the other hand, microsilica eliminating the dripping water phenomenon results in better bonding in the transfer region of cement and aggregate dough, resulting in increased strength of the concrete.
In addition, replacing some of microsilica instead of cement due to increased electrical resistance of the concrete reduces permeability against chloride ion penetration. It should be noted that the use of microsilica in environments exposed to magnesium sulfate is not desirable. In researches, the replacement value of 12-7% of microsilica instead of cement has had favorable results.
Microsilica on Concrete Performance and Durability
Microsilica (Silica Fume) plays a significant role in improving the mechanical strength, durability, and overall performance of concrete, making it an essential additive in modern construction and infrastructure projects.
Due to its high amorphous silica content and extremely fine particle size, microsilica reacts with calcium hydroxide in cement to produce additional calcium silicate hydrate (C-S-H), resulting in higher compressive strength, lower permeability, improved bonding, and greater resistance to chloride penetration, sulfate attack, and chemical corrosion.
These properties make microsilica particularly valuable in high-performance concrete used in bridges, tunnels, dams, marine structures, highways, high-rise buildings, and industrial flooring. Consequently, countries with expanding infrastructure and construction industries, including China, India, Turkey, the UAE, Saudi Arabia, Qatar, and other GCC markets, represent important opportunities for microsilica suppliers and exporters.
Iran Chemical Mine (IranChemicalMine.com) serves as a reliable source for international buyers seeking Iranian microsilica, offering export-oriented sourcing support, competitive supply opportunities, and information on product specifications for industrial and construction applications.
By connecting international customers with Iranian suppliers, Iran Chemical Mine aims to support dependable sourcing of quality microsilica for global construction markets.
Microsilica effect on concrete in drilling
A very important point about using microsilica is that it should completely slurry before use. The slurry should be completely fluent and free from particles that are bonded with microsilica. For this purpose, it is necessary to use a fast-moving mechanical gear. The adhesion of microsilica to each other, due to its great detriment, acts as an active silica in reaction with alkali, causing damage due to the alkali silica reaction.
