Plain concrete has a very low tensile strength, a little amount of ductility, and little crack resistance. Internal microcracks are a natural component of concrete, primarily as a result of drying shrinkage, and when these microcracks spread, the concrete becomes brittle and has a weak tensile strength. Concrete’s static and dynamic qualities will be enhanced by the addition of nanofibers, which will prevent the emergence of microcracks. In a study, nanocellulose fibers were used to strengthen High Performance Concrete (HPC) to improve durability. The benefits of alternative micro- and nano-fiber reinforcing methods could be achieved with fibers at a significantly lower cost. The impact of various reinforcing schemes on the processing variables and mechanical characteristics of a concrete mixture were empirically investigated. Notched-beam tests were conducted with crack mouth opening displacement control in order to evaluate fracture energy under stable crack-growth conditions. According to preliminary data, adding 3% micro and nano-fibers increased the fracture energy by more than 50% as compared to the unreinforced material with barely any changes to the processing method. Preliminary data show that, with hardly any modifications to the processing technique, the addition of 3% micro- and nano-fibers enhanced the fracture energy by more than 50% when compared to the unreinforced material.

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