Bacterial Performance in Crack Healing and its Role in Creating Sustainable Construction

Abstract

Building practices began with human civilization. Cement is the most commonly used building construction material throughout the world. These traditional building materials have their own environmental impact during production, transportation, and construction, but also have limitations on building quality and cost. Biological construction materials are currently emerging technology to combat emissions from the construction sector. Different civil and biotechnology researchers have turned to microorganisms for the production of bio construction materials that are environmentally friendly, socially acceptable, and economically feasible but can also produce high strength. Scanning electron microscope (SEM) and X-Ray diffraction (XRD) are the most characterization methods used to observe and ensure the production of calcite precipitate as bacterial concrete. As compared to conventional concrete, bacterial concrete was greater by 35.15% in compressive strength, 24.32% in average tensile strength, and 17.24% in average flexural strength, and it was 4 times lower in water absorption and 8 times lower in acid resistivity than conventional concrete. Genetic engineering has great potential to further enhance the mechanical strength of bacterial concrete for use in crack repairs in existing buildings.

Harnessing microbes for self-healing concrete – A review

“…In other words, bacteria bring a world of possibilities to the construction industry, opening doors to innovative and sustainable practices. These tiny living organisms play a significant role in enhancing various aspects of construction materials and processes, paving the way for a more eco-friendly and resilient future (18).…”

“…Just imagine the potential of these microbe-powered wonders-construction materials that not only meet our practical needs but also demonstrate a profound commitment to environmental stewardship. Through these advancements, we find ourselves on a path where sustainable construction practices and ecological well-being go hand in hand (18,25,26).…”