MasterRoc MP 325 - Solvent-free, low viscosity, hydrophilic grout for rock injection and consolidation of sand and silt strata

Formerly: MEYCO MP 325

How does MasterRoc MP 325 work?

MasterRoc MP 325 grout is a one-component injection system, based on a nanometric colloidal silica suspension. The open time can be adjusted with a 10 percent solution of NaCl as accelerator. The gel time may be adjusted by varying the quantity of accelerator added to MasterRoc MP 325 grout Component A. Due to the hydrophilic nature of the product; it also adheres well to wet surfaces. There is no foam reaction that can negatively influence the bond. Equipment can easily be cleaned using water. MasterRoc MP 325 grout has been developed for consolidation of sand and silt-based strata and for injection into fine joints and fissures in rock.

Recommended for use in:

  • Slope stabilization in rock
  • Ground improvement
  • Pre-injection grouting for tunneling projects
  • Waterproofing of existing tunnels
  • Waterproofing and stabilization in mining applications

What are the unique features of MasterRoc MP 325?

  • Very low viscosity
  • Workable between 40 °F and 105 °F (5 °C and 40 °C)
  • Uses simple mixing and pumping equipment as used with cementitious grouts
  • Can be used with both one- and two-component pumps

What are the benefits of MasterRoc MP 325?

  • Excellent penetration
  • Controlled gel time with the use of a 10 percent solution of sodium chloride (NaCl) as accelerator
  • Improved working safety, reduced environmental impact and low handling costs
  • Non-aggressive
  • Good bonding to wet surfaces
  • Environmentally safe; contains no solvents nor toxic components


Central Region
+966 11 2790971
Western Region
+966 12 6394799
+966 12 6395702
Eastern Region
+966 13 8084896
South Region
+966 17 2748255
MasterFlow Anchor Grouts Software

MasterFlow Anchor Grouts Software

Download our MasterFlow Anchor Grouts Software