Bacterial self-healing concrete: linking mechanisms and influencing factors to crack width and healing efficiency

Quantitative Microstructural and Experimental Assessment of Bacterial Self-Healing Concrete Using Vacuum-Impregnated Lightweight Aggregates

Bacterial concrete has been proposed as a potential approach to address sustainability challenges in concrete, primarily through its self-healing capabilities that may extend service life and reduce long-term maintenance needs. This study investigated the influence of different precursors and bacteria on the perfor...

Bacterial Self-healing Concrete with Limestone Calcined Clay: Mechanical Properties, Durability, and Digital Image-Based Evaluation

Conventional cement production creates a huge amount of CO₂ emission, and concrete is vulnerable to the formation of microcracks that shorten the service life. Bacterial self healing and Limestone Calcined Cement (LC³) are some sustainable solutions proposed. However, the combined effect of LC³ and bacterial self-h...

Unlocking the potential of bacterial self-healing in concrete: applications, and challenges for sustainable infrastructure

Bacterial Self-Healing Concrete: Mechanisms, Incorporation Methods, and Future Perspectives — A Comprehensive Review

Bio-concrete or self-healing concrete is an innovative concept concerning sustainable construction materials. Contrary to regular concrete prone to progressive deterioration due to the formation of cracks, specific types of alkali-tolerant bacteria, primarily Bacillus, make it possible for bio-concrete to produce CaCO₃...

Preparation of Magnetic Microbial Repair Material and Its Application in Concrete Crack Healing

Due to its high brittleness and low tensile strength, concrete is vulnerable to cracks, which will compromise the safety and service life of a structure. Although microbial repair materials have gained attention for their compatibility with concretes and their eco-friendly nature, they have limitations, such as a res...

Self-Healing Bio-Concrete from a Process-Driven Perspective: A Review of Mechanisms, Challenges and Multi-Scale Simulation Methods

Microcracks in concrete are a key factor affecting structural durability, and traditional repair methods struggle to achieve the long-term sealing of deep-seated microcracks. Self-healing bio-concrete, based on the technology of microorganism-induced calcium carbonate precipitation, utilises pre-embedded microbial repa...