This paper is aimed to present the properties of concrete by using waste wood ash (WWA) as a mineral admixture and partial substitute forOPC 53 grade Portland cement. The properties examined areflexural strength, and ultrasonic pulse velocity (UPV).Additionally, the concrete samples prepared are exposed to targeted temperatures of 200oC, 400oC, and 8000C for measuring the residual properties.The partial substitution levels of wood ash are 0%-W0, 5%-W5, 10%-W10, 15%-W15, and 20%-W20. WWA concrete flexural strength results are compared with the results of M30 gradeconcrete flexural strength

Pozzolanic, Sustainable concrete, Eco-friendly concrete, Wood ash,Filler material