A Study on Strength and Durability of M35 Concrete Using Micro Silica and Flax Fiber

Mohammad Sheesh, Dr. Vishnu Sharma

Nano silica, Flax Fiber, Compressive strength, Split Tensile Strength, microstructure.

In all over the world India is the second largest producer of cement. Cement demand in India is expected to increase due to government pushes for large infrastructure project leading to 45 million tonnes (MT) cement needed in three years. The use of the cement result in emission of CO2 gasses which is major environmental concern. In this study partial replacement of cement of M-35 grade of concrete using Nano-Silica (NS)at varying percentage i.e. 0%, 0.5%, 1.0%, 1.5% and 2% and addition of Flax Fiber with same percentage has been done. The study deals with nano-materials, by virtue of their very small particle size can affect the concrete properties by altering the microstructure

In first phase M-35 concrete has been made using 0% Nano- Silica i.e. controlled mix and observation has been made for compressive and tensile strength at 7 and 28 days.

The second phase is totally concerned with the partial replacement of cement in M-35 concrete using Nano-Silica (NS)at varying percentage i.e. 0%, 0.50%, 1.0%, 1.5% and 2% and addition of Flax Fiber with same percentage. The result obtained from second phase of experiment has been compared with the result obtained from the first phase and analysis has been made.