Marine Self-Healing Concrete Innovations
PolyU's Technology is Low-Carbon and Sustainable
Kalin Ned — November 13, 2025
A research team from The Hong Kong Polytechnic University has engineered a specialized self-healing concrete intended for use in marine environments.
The material is composed partly of recycled construction waste that has been treated through a biomineralization process, which involves specific bacteria that utilize carbon dioxide to strengthen these recycled aggregates. This integration of waste material aims to reduce the demand for virgin resources. Additionally, the self-healing concrete is designed with an inherent self-repairing capability, where microbial activity can automatically fill cracks that develop over time. This ultimately serves to extend the structure's service life and reduce maintenance needs.
The Hong Kong Polytechnic University's development initiative has received financial backing from the Green Tech Fund.
