MasterRoc MP 303CE

Low-viscosity, fast-reacting acrylic resin for permanent water sealing and layer curtaining of concrete and masonry


How does MasterRoc MP 303CE work?

MasterRoc MP 303CE is a highly reactive two-component acrylic sealing resin with a low viscosity for good penetration. The product cures quickly, forming a highly flexible hydrogel with extraordinary swelling/re-swelling properties. MasterRoc MP 303CE resin has been designed for usage as a permanent water sealing and layer curtaining resin. It is used for low pressure injection in concrete and masonry.

Recommended for use in:

  • Stopping minor water infiltration
  • Curtain injection
  • Repair of cracks and fissures in concrete
  • Permanent sealing of tunnel linings, shafts and masonry

What are the unique features of MasterRoc MP 303CE?

  • Very low viscosity
  • Controlled gel time between 14 seconds and 3 minutes at 68 °F (20 °C)
  • Workable between 41 °F (5 °C) to 104 °F (40 °C)
  • Good bond strength to fractured rock and concrete, even under wet conditions
  • Excellent swelling (up to 200% of initial volume) and re-swelling behavior (while maintaining self-healing properties)

What are the benefits of MasterRoc MP 303CE?

  • Environmentally preferableharmless in contact with ground water and no emission of potentially harmful substances
  • Low viscosity allows deep penetration into very fine fissures and cracks
  • The cured resin is resistant to acidic and alkaline solutions as well as many other solvents

Direct contact

Richard Foord

Underground Construction


MasterRoc MP 303 CE Declaration of Performance

pdf (291.42 Kb)

MasterRoc MP 303 CE Accelerator: Safety Data Sheet

pdf (45.89 Kb)

MasterRoc MP 303 CE Resin: Safety Data Sheet

pdf (40.56 Kb)

MasterRoc MP 303 CE: Technical Data Sheet

pdf (71.74 Kb)