One of the most heterogeneous items used in the construction sector is concrete. The major ingredient required for making concrete is cement but its hackneyed usage marks to be a serious environmental concern. This issue could be addressed by seeking the help of novel imperative cementing materials and microsilica proves to be one such alternative. Microsilica, otherwise known as Silica Fume is an exquisitely fine polymorph of silica in amorphous form. It unfolds as a by-product when ferrosilicon alloys or silicon metals are produced using electrical –arc furnaces. It is essentially silicon dioxide (greater than 90%) in a non-crystalline shape and is understood for possessing cementitious and pozzolanic properties as well. The components such as oxides of aluminum, calcium, iron, magnesium, potassium, and sodium alongside sulphur and carbon constitute the remaining part of the microsilica. Found in spherical shapes, microsilica is further processed to get rid of impurities and also to regulate the size of the particles. The average diameter of silica fumes ranges from 100nm to 200nm. Microsilica is durable and tends to supply great resistance against steel corrosion.