International Research Journal of Education and Technology

Over the decades, researchers have attempted to include extra cementitious elements into concrete in order to boost its strength and longevity. Recent advancements in the field of nano-engineered concrete have demonstrated that nanomaterials significantly improve the mechanical and durability properties of concrete. In this study, the properties of concrete are investigated by substituting different percentages of Nano TiO₂ particles for cement 0%, 1%, 2%, 3%, 4%, and 5%, and by using 0.5% of the volume of the concrete's reinforcing to be made of polypropylene fiber. In addition to the microstructural study, the results of the compressive, split, flexural, and slump tests were compared for a variety of percentages.  By combining 0.5% polypropylene fiber with 2% nano-TiO₂, concrete specimens' mechanical strength can be successfully enhanced. After 28 days, the concrete shows increase in its compressive strength of 4.89%, splitting tensile strength of 15.32%, and flexural strength of 14.69%.

Keywords: Compressive Strength, Flexural strength, Nano Materials, Flowability, Water Absorption.