Development of Crack Self-healing Technology for High Potential Concrete

Modeling of Self-Healing Concrete: A Review

Self-healing concrete (SHC) has received a tremendous attention due to its advanced ability of automatic crack detection and crack repairing compared to the standard concrete. Two main approaches which considered as to-date self-healing mechanisms are autogenous and autonomous healing. In the past several years, the effort of the research has been focused on experimental works instead of numeri...

Development of High-strength Self-consolidating Concrete

Bacteria-based Self-healing of Concrete: Effects of Environment, Exposure and Crack Size

The effect of water-borne contaminants on the durability of concrete is well-known and cracked concrete is more susceptible to permeation of these contaminants. An approach to autonomic self-healing of such concretes is the utilization of microbiologically-induced calciteprecipitation. This approach uses the metabolic activity of bacteria and biomineral precursors embedded within the concrete t...

Effective Crack Control of Concrete by Self-Healing of Cementitious Composites Using Synthetic Fiber

Although concrete is one of the most widely used construction materials, it is characterized by substantially low tensile strength in comparison to its compression strength, and the occurrence of cracks is unavoidable. In addition, cracks progress due to environmental conditions including damage by freezing, neutralization, and salt, etc. Moreover, detrimental damage can occur in concrete struc...

Optimization of a Binary Concrete Crack Self-Healing System Containing Bacteria and Oxygen

An optimized strategy for the enhancement of microbially induced calcium precipitation including spore viability ensurance, nutrient selection and O2 supply was developed. Firstly, an optimal yeast extract concentration of 5 g/l in sporulation medium was determined based on viable spore yield and spore viability. Furthermore, the effects of certain influential factors on microbial calcium preci...