Office of Commercialization  Network Silica strengthened bonding of Fiber Composites
Network Silica strengthened bonding of Fiber Composites

Network Silica strengthened bonding of Fiber Composites

Description:

Unmet Need: Enhanced bonding performance between fiber composites and cementitious mixture

Corrosion of steel reinforcing bar (rebar) limits the life of rigid concrete structures.  Steel is still widely used due to low cost, but alternative fiber reinforced polymer (FRP) rebar is now available and offers numerous advantages including low weight and thermal conductivity.  FRP also has higher tensile strength, which only provides benefit if matched by high bond strength between the FRP and concrete in which it is embedded.

The Technology: Addition of networked silica to bonding surface of fiber composites

Researchers at WSU present strengthening of structural bonds between fiber composites including glass, carbon, basalt etc. and concrete or rigid polymer matrix material with the addition of networked silica.  

Applications:

  • Cementitious construction in corrosive environments, using non-ferrous recycled fiber reinforced polymer (FRP) reinforcing bar (rebar).
  • Fiber reinforced polymer has applications in aviation sector with specific use in manufacturing of commercial jets.

Advantages:

  • Enhanced performance to include tensile strength.
  • 3X increase in shear strength.
  • Improved toughness of all mixes of fiber composites and mortars. 

Patent Information:

Provisional patent application has been filed.

Patent Information: