Bacteria-Induced Self-Healing Concrete: A Critical Review for the Construction Industries
摘要
Self-healing concrete is an innovative material that autonomously repairs cracks and damage, increasing the durability and longevity of structures. This innovative construction material employs various mechanisms to initiate and facilitate healing, reducing maintenance costs and increasing infrastructure sustainability. One key approach involves incorporating encapsulated healing agents within the concrete matrix. Microcapsules contain materials such as bacteria, minerals, or polymers. These capsules rupture when cracks form in the concrete, releasing the healing agents into the damaged areas. The development and integration of self-healing concrete represent a significant stride towards sustainable and resilient infrastructure. As the construction industry continues to embrace innovative solutions, self-healing concrete stands out as a promising advancement, offering a proactive and efficient means of maintaining the integrity of our built environment. This review paper explores the intriguing domain of Self-Healing concrete, and examines how it can transform infrastructure resilience. The study delves into the methods and materials utilized in self-healing concrete technology, examining its capability to heal the cracks autonomously, and other damages brought on by environmental stresses. It explores various methods, including bacteria-based systems and encapsulated healing agents, highlighting their effectiveness in enhancing the durability and lifespan of concrete structures. This review highlights the role of self-healing concrete in enhancing the mechanical and durability properties of structures with the help of MICP (Mechanically Induced Calcite Precipitation) technology using ureolytic and non-ureolytic bacteria.