| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Biological Materials Science
|
| Presentation Title |
Durability Performance of Enzymatic Cementitious Materials |
| Author(s) |
Sara Heidarnezhad, Nima Rahbar |
| On-Site Speaker (Planned) |
Sara Heidarnezhad |
| Abstract Scope |
Ion permeability and resulting corrosion-induced degradation significantly hamper the sustainability of reinforced concrete structures. This study comprehensively evaluates the durability performance of a novel enzymatic self-healing concrete utilizing the ubiquitous enzyme Carbonic Anhydrase (CA). We propose a novel technique using a custom vacuum-assisted accelerated dye penetration test to assess the water/chloride ion permeability. The results demonstrate that CA-modified concrete exhibits substantially reduced dye adsorption, indicating superior water and chloride penetration resistance, with a remarkable 50% reduction compared to the control samples. Notably, the mechanical properties of the concrete were not compromised, emphasizing the promising potential of CA in extending the service life of concrete structures. Additionally, the diffusion simulation provides insights into permeability coefficients and penetration depths in mortar and cement paste. Complementary analysis, including computed tomography (CT) scanning offers detailed insights into the mechanism of CA in enhancing concrete durability. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Biomaterials, Modeling and Simulation |