Performance on steel fiber reinforced concrete using metakaolin

Abstract

Most of the common building material used today in the globe is cementing concrete. Its widespread use is due to the fact that it offers outstanding workability as well as can be shaped into whichever desired form. Since normal concrete is weak under stress, steel bars are included into cement concrete to increase its tensile strength. Massive tensile strains are applied to the concrete cover as a result of the expansion caused by internal reinforcement corrosion, which leads to cracking. Usage of fibers in concrete is an effective technique to arrest the extensive cracking and improves the mechanical characteristics of concrete. When compared to other forms of fibre, steel fibres are used for experiments more often because to their ductility, high tensile strength, ability to stop the spread of fractures, enhanced bond strength, etc. Using metakaolin as a cement substitute, the primary goal of the current experimental effort has to appraise the mechanical assets of concrete using steel fiber. In total, fifteen cubes, fifteen cylinders, and fifteen beams were casted for the experimental task. It has been explored how steel fibres and metakaolin change the mechanical characteristics of M25 grade concrete. By concrete volume, fibre content was modified in increments of 0.25 to 1%. 15% of the weight of the cement was composed of the metakaolin. With the purpose of determining the impact on the mechanical chacteristics of normal concrete, the testing outcomes of concrete using steel fiber and metakaolin are compared with control concrete. The strength of concrete in compression, tension, and flexure improved by 20.83%, 34.90%, and 72.91%, respectively, after the addition of 1% steel fibre and 15% metakaolin. Concrete using metakaolin has been discovered to have a little greater density than unreinforced concrete, which contributes to the enhanced mechanical characteristics of the concrete.