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Oct 1, 2020

Hydrophobic mortar

Physical Sciences, Material

  • Hydrophobicity based on bacterial biofilm supplements
  • No need for post-treatment
  • Environmentally friendly

Your contact

Dr. Katrin Bercht

E-Mail:
kbercht@baypat.de
Phone:
+49 (0) 89 5480177 - 16
Reference Number:
B75015

Challenge

The durability of cement-based materials such as mortar and concrete typically suffers from water penetration, resulting in corrosion of steel structures embedded inside the material, and therefore to damage and weakness of the building structure.

Innovation

Here a mortar hybrid material is presented where a bacterial biofilm is supplemented, increasing the hydrophobic properties. Bacterial biofilms are ubiquitous communities of bacteria encased in a matrix of self-produced biopolymers. In such a biofilm matrix, the bacteria are able to resist various environmental challenges, e.g., chemicals, desiccation, or removal from surfaces. With this addition of biofilm to mortar, the material exhibits an increased roughness on the microscale and the nanoscale, and on both the outer and inner surface, imitating the lotus effect (see Figure below).

Commercial Opportunities

Biofilm-enriched hybrid mortar

  • with strong hydrophobic properties
  • with no need for post-treatment
  • that is not harmful to the environment

Development Status

  • biofim-enriched hybrid mortar has been tested and analyzed on laboratory scale
  • lyophilized powder of the bacterial biofilm available as dry admixture
  • mechanical properties with different amounts of biofilm contents have been measured

References

Interested? Get in touch!

Contact a specific team member for individual topics via the Team section or simply use our contact form. You can also click on the button and drop us a line.