WORKABILITY AND COMPRESSIVE STRENGTH OF BACTERIA ENRICHED STEEL FIBRE REINFORCED SELF COMPACTING CONCRETE

Civil engineering

NATIONAL CONFERENCE ON TECHNOLOGICAL ADVANCEMENTS IN ENGINEERING

ABSTRACT Steel fiber reinforced self-compacting concrete is well accepted for better resistance for segregation, and effective use in congested reinforcements. It will have improved ductile property and crack propagation is minimum. As the need for sustainable materials is increasing all over the world, innovative technique for making the concrete more durable have significant importance. As the concrete is prone to cracking, the cracks make the concrete vulnerable because it degrade the concrete and corrode the steel reinforcement. Bacterial concrete is an advancement of modern concrete technology. The limestone precipitating bacteria’s are introduced into the concrete during casting and when the cracks occurs in the presence of moisture, bacteria’s precipitate and heal the cracks. So the introduction of combination of Self-healing characteristics and characteristics of Steel fiber reinforced self-compacting concrete is an advancement to the concrete industry. In this paper Micro silica is used to replace OPC up to 30%. Steel fiber is used up to 1.5% of total volume in Self compacting concrete. An optimum amount for the Micro silica replacement is 20% of OPC. The performance of Self compacting concrete under certain loads and the effect of healing is studied. The strength of healed concrete is also studied. The Bacteria enriched steel fiber reinforced self-compacting concrete possess good workability for a self-compacting concrete All together increase in Compressive strength and durability than normal self-compacting concrete is seen.

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