Investigation of the Self-Healing Capacity of Cracked Concrete by Sprayed Bacteria Immobilized in Food Waste Biochar

Stakeholders in the transportation industry are facing the challenge of developing sustainable and cost effective pavement solutions that enhance societal benefit, reduce the effects of aging and deterioration, and lessen the environmental impact. With these considerations in mind, this project aims to investigate the potential of spraying food waste biochar containing immobilized bacteria on cracked concrete to retrofit deteriorated hard pavements and to restore their mechanical strength. The goals of this project are:

  • Assessing the mechanical characteristics and the self-healing capacity of cracked concrete sprayed with food waste biochar containing a variety of immobilized bacteria spores,
  • Verifying the applicability of bacteria carbonate precipitation to extend service life of hard pavements, while increasing user experience and safety.
Principal Investigator: 
Andrea Calabrese
PI Contact Information:

California State University, Long Beach

Impacts/Benefits of Implementation: 

Spraying biochar with self-healing bacteria on cracked concrete can lead to a low-cost, durable and highly efficient technology to retrofit concrete pavements while creating added valuable applications for solid residue from food waste.

Project Number: 



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