A Study on Strength Durability and fatigue Characteristics of Self Healing Bacterial Concrete for Rigid Pavements

Abstract

Concrete is a widely used material in construction that can withstand compressive load, but needs steel to resist the tensile stress. Because of its brittle nature it is susceptible to cracks. Theses cracks in the field of pavement construction leads to ingress of fluids or substances into the lower layer of roads. Thus the leads to failure of cracks within the life of concrete. Now days, Vehicles on the roads increasing substantially, the roads get pressure and cracks are developed. To avoid and overcome these cracks, need of increase in strength and durability of concrete. Especially in development of flexural strength of concrete. In such ways the studies on the subject of self-healing have shown promise in the use of bacteria for sealing cracks. Introduction of bacteria into the concrete mixture works by precipitation of calcium carbonate to fill up the cracks in concrete. In this research, extensive laboratory investigations have been carried out to study the effect of introducing Bacillus Subtilis JC-3, E.coli and Bacillus Sphaericus Bacteria on the mechanical properties such as Compressive strength, Flexural strength and split tensile strength. With addition to this beams of standard specimen for fatigue test were casted and test was conducted for normal and Bacillus Subtilis JC-3 bacterial concrete for the stress ratio 0.6, 0.7 and 0.8. Results of concrete with bacteria and without bacteria were compared. newlineIn this research, the experimental results of Bacillus Subtilis JC-3 bacterial concrete Induced Pavement and plain concrete are discussed for M40 Grade of concrete for three type of cement. Concrete is firm and will crack with the application of increasing tensile force. With adding to this Fire resisting properties of bacteria induced concrete, loss in weight, loss in strength and to assets the depth of concrete for elevated temperature nays software is carried out. In this paper, the experimental results of Bacterial Induced Concrete and predictable concrete are discussed for M40 Grade of concrete for