Abstract

The goal of this project is to evaluate how Nano Silica (NS) affects the qualities of high-strength concrete (HSC) in its fresh state, hardened state, and durability. Five different concrete mixtures were created and used for this purpose. NS was added to the cement weight at replacement levels of 0%, 0.5%, 1%, 1.5%, and 2%. M60 grade cement concrete mix design arrived. The high strength concrete made by using cement 53 grade, fine aggregate, coarse aggregate and nano silica and its properties are evaluated in laboratory. The fresh concrete properties testing procedure, harden concrete properties testing procedure and durability properties testing procedure are clear explained in this report. The fresh, harden and durability properties are evaluated. The workability result shows NS addition causes workability of concrete reduced. The 0.5 to 1.5% NS added concrete compressive strength, split tensile strength and flexural strength are improved. The 1.5% NS added concrete specimens lowest weight loss and strength loss are obtained from various hazardous environment. The optimum usage of NS percentage is 1.5%. 1.5% NS cement concrete achieved high strength cement concrete.