Study of Bacterial Concrete Corrosion Resistance in Marine Environment

Concrete is a major building material. This study looked at Bacterial Concrete (BC), which is created by mixing a bacterial solution with a cell concentration of 10⁷ CFU/ml. This amount is equivalent to 8% of the cement weight and helps to improve the performance in marine environments. Adding bacterial culture significantly enhanced the concrete’s mechanical properties, durability, and self-healing ability. As a result, it showed better compressive strength than regular concrete. The major aim of this study is to see how the bacterial concrete could reduce the harmful effects of environmental stressors on marine structures. It also evaluated the economic feasibility and sustainability of Bacterial Concrete before use. During testing, Bacterial concrete beams were soaked in seawater for 365 days and showed no rebar corrosion, which is a common problem in normal concrete. Durability tests included water absorption, sorptivity, bulk diffusion, and sulphate resistance. Rice husk ash is utilized for the purpose of strengthening the M40-grade concrete, while adding 5 to 10 percent corn starch improved flowability and the setting time without losing strength. Furthermore, 0.5 percent silica fume is included to boost strength and durability. The study wraps up by discussing sustainability challenges and offering insights to promote the use of bacterial concrete in strong and lasting marine applications.