Bacteria in Ultra-High-Performance Concrete - Review of Factors Affecting Durability

Durability is the most important aspect of the structure, but it is not the only aspect of the structure. We also need high workability, high strength, and high modulus of elasticity, high dimensional stability, low permeability, and chemical attack resistance, as well as a special self-healing capacity for construction of high rise structures, long-span precast/prestressed bridge girders, marine, aviation, and defense construction applications and special structures. According to several investigations, bacteria of the genus Bacillus are required to boost the self-healing potential of concrete. High-strength, self-compacting, fiber-reinforced, high performance, and bacte- rial self-healing concrete are required for special and high-rise constructions. In this study, we exclusively evaluate the bacterial effect of Genus Bacillus on various self-healing capabilities of concrete in terms of concrete durability. In our research, we also include ul- tra-high performance concrete, which is employed in constructions such as high-rise building construction, long-span pre- cast/prestressed bridge girders, maritime, aviation, and defense construction applications. In this situation, a new type of concrete is formed, which is referred to as Bacterial Ultra-High-Performance Concrete. This concrete will be employed in high-rise and special- purpose structures in the future because of its great durability and low maintenance cost. Keywords Durability.Ultra-high-performance concrete.Self-healing concrete. High-strength concrete.High- performanceconcrete.Bacterial concrete. Fiber-reinforced concrete