Study on Mechanical Properties of Polymer Fiber-Reinforced Nano-Concrete Under Elevated Temperature

To increase the lifetime and the strength of the building, new technology or a new method is to be introduced in constructions. As concrete plays a major role in construction, nano-silica, a nano-particle has been added to normal concrete to make nano-concrete. The mechanical properties and applications of the nano-concrete were initiated and explained thoroughly. This research says that the nano-concrete increases the strength by 12% greater than the normal concrete. For further development, polymer fiber has been added. The polymer used in this experiment is polypropylene. Polypropylene is a thermoplastic polymer with lightweight, high strength, and high crack resistance of a concrete. Three different proportions were initiated. The proportions are without fiber and addition of 1 and 2% of polypropylene. Each proportion is tested for compression, split tensile, and flexural under room temperature and elevated temperatures of 50 and 100 °C. Each specimen was tested after 28 days of curing. The polymer fiber-reinforced nano-concrete beam is casted, and the maximum deflection of the beam is determined under elevated temperature. It shows that the nano-concrete with 1% polypropylene has more strength than the other two proportions.