Concrete is well known for its high strength as well as a versatile mouldale construction material. It is vastly utilized for construction of infrastructures such as buildings, bridges, cooling towers, chimneys, industrial and numerical structures. Fire is taken in to consideration as one of greater destructive accidental loads that a structure can be subjected at its lifespan. The scale of damage will be causing mainly on the severity and duration. The different properties of concrete and the steel reinforcement are modified due the temperature and duration of fire. Assessment of fire damaged concrete may start with visual observing and ultrasonic pulse velocity measurements and tests on core samples. This paper describes the method that is used in showing the performance of concrete. The bacteria like calcite precipitating spore forming is allowed to settle in to concrete while mixing.

Keywords : Bacterial Concrete, Fire Resistance, Bacillus subtilis.