EXPERIMENTAL INVESTIGATION ON PROPERTIES OF CONCRETE BY THE ADDITION OF CARBON FIBER

EXPERIMENTAL INVESTIGATION ON PROPERTIES OF CONCRETE BY THE ADDITION OF CARBON FIBER 

          The Carbon fiber is becoming a widely accepted solution for repairing and strengthening in the field of civil engineering around the world. They are thin, strong and flexible. It has high stiffness, high tensile strength, low weight, high chemical resistance, high temperature tolerance and low thermal expansion and Possessing strength up to five times that of steel and being one-third its weight. In this project the carbon fiber is used to strengthen the concrete. The mix design was done for M25 grade concrete. 

The strengthening of the concrete using CF in the strengthening system provides an economical and versatile solution for extending the service life of concrete structures.  Concrete is a composite material composed mainly of water, aggregate, and cement. Often, additives and reinforcements are included in the mixture to achieve the desired physical properties of the finished material. When these ingredients are mixed together, they form a fluid mass that is easily molded into shape. Over time, the cement forms a hard matrix which binds the rest of the ingredients together into a durable stone-like material with many uses. Concrete has relatively high compressive strength, but much lower tensile strength. For this reason it is usually reinforced with materials that are strong in tension (often steel). The elasticity of concrete is relatively constant at low stress levels but a start decreasing at higher stress levels as matrix cracking develops. Concrete has a very low coefficient of thermal expansion and shrinks as it matures. All concrete structures crack to some extent, due to shrinkage and tension. Concrete that is subjected to long-duration forces is prone to creep. 

About The Author:-

Sp.Aswinpalaniappan M.E.,*(Structural Engineering)
Member of American Concrete Institute
Sri Raaja Raajan College of Engineering and Technology
Karaikudi, Tamil Nadu , India- 630301