Effect of Nano Silica and Multi Walled Carbon Nano Tubes on Mechanical Properties of Concrete

Abstract

Efforts are made to improve the mechanical properties of M30 grade of concrete by the application of multi walled nano carbon tubes and nano silica. Very small particle sizes of nano materials can alter the properties of concrete. An experimental study is conducted by substitution of cement with nano silica of 0.3,0.6 and 1% by weight of cement and multi walled nano carbon tubes 6 nm diameter of 0.03, 0.045 and 0.06% by weight of cement. 0.3&0.03%,0.6&0.045%,1and0.06% replacing nano silica and multi walled carbon nano tubes by weight of cement. While performing compressive strength test, split tensile strength test, ultra-pulse velocity test, showing a significant increase in compressive strength in early age.Reinforcing concrete with multi-walled carbon nano tubes usually resulted in enhancing the mechanical properties of concrete nano composites relative to the reference samples.

 Keywords- Compressive strength,Multi walled carbon nano tubes, Nano silica,Split tensile strength, Ultra pulse velocity.