The benefits of using microsilica with cement can be substantial as it reduces thermal cracking caused by the heat of cement hydration mixed with cement and can improve resistance to attack by sulfate and acidic water which further increases the durability of concrete. Advantages and applications are reviewed and original illustrations of several experiments are included.

Silica fume has a smaller particle size and a filler material filling the voids to provide a more compact structure. Which makes the given concrete stronger, is further described next. The flexural strength increased by 13.36%, 7.16%, and 2.10% compared to the control mixture for the mixtures with 15%, 10%, and 5% silica fume content. And other hand the chemical effect of silica fume through its secondary pozzolanic reaction with CH produces a new CSH which increases the strength of concrete and enhances the bond between paste and aggregate in the transitional zone.

The design of structures using silica fume (SF) concrete to an acceptable safety level requires a prospective evaluation of its mechanical properties. An extensive experimental program was carried out on compressive strength, flexural strength and tensile splitting strength of SF concrete. And as a result of the tests it was found that 15%-25% partial replacement of cement with SF can give better performance of the frame. Which is capable of resisting forces like earthquakes.

Concrete structures requiring strength and durability in high chloride environments, such as harbors and marine bridges, are a major application for silica fume. For example, high performance silica fume concrete has been used in the Bandra Worli Sea-Link Bridge in Mumbai. The required strength and marine durability were achieved by using silica fume concrete for pile caps, piers and precast segments. It also has a special place in almost every construction for many other qualities.

Requirements for exceptionally high abrasion resistance, such as heavy duty industrial floors, coastal defense and military pavements specify high performance silica fume concrete. For example, several hydroelectric dam structures in India, such as Tehri, Chamera and Salal, have used high-performance silica fume concrete to reduce erosion and abrasion losses in spillways and stilling basins. Silica fume increases the abrasion resistance of concrete through increased strength of the matrix and improved bonding between the matrix and aggregate.