One of the most commonly used building materials worldwide is concrete. Concrete is made up of cement, coarse aggregates, fine aggregates, and water. Due to the price of cement and the environmental damage it causes during production, numerous researchers have discovered alternatives. Acacia Nilotica Ash had been swapped out for cement in this project. It consists of calcium, magnesium, and potassium salts and acts as a binding material. The crushing industry's waste is quarry dust that is produced in large quantities (about 200 million metric tonnes annually) and is a concentrated material in the form of dust. It serves as filler. As a result, cement and sand are used in place of acacia nilotica ash and quarry dust. Using 100% quarry dust and various concentrations of acacia nilotica ash, such as 0%, 5%, 10%, and 15%, M25 grade concrete was cast in a variety of shapes while maintaining a 0.45 for the water-to-cement ratio. This experiment examined the flexural behaviour, split tensile strength, and compressive strength of ash concrete manufactured from Acacia nilotica are evaluated and contrasted with specimens of typically used concrete.